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<div class="fragment"><div class="line"><a id="l00001" name="l00001"></a><span class="lineno"> 1</span><span class="comment">//</span></div>
<div class="line"><a id="l00002" name="l00002"></a><span class="lineno"> 2</span><span class="comment">// Copyright 2020 Debabrata Mandal &lt;mandaldebabrata123@gmail.com&gt;</span></div>
<div class="line"><a id="l00003" name="l00003"></a><span class="lineno"> 3</span><span class="comment">//</span></div>
<div class="line"><a id="l00004" name="l00004"></a><span class="lineno"> 4</span><span class="comment">// Distributed under the Boost Software License, Version 1.0</span></div>
<div class="line"><a id="l00005" name="l00005"></a><span class="lineno"> 5</span><span class="comment">// See accompanying file LICENSE_1_0.txt or copy at</span></div>
<div class="line"><a id="l00006" name="l00006"></a><span class="lineno"> 6</span><span class="comment">// http://www.boost.org/LICENSE_1_0.txt</span></div>
<div class="line"><a id="l00007" name="l00007"></a><span class="lineno"> 7</span><span class="comment">//</span></div>
<div class="line"><a id="l00008" name="l00008"></a><span class="lineno"> 8</span> </div>
<div class="line"><a id="l00009" name="l00009"></a><span class="lineno"> 9</span><span class="preprocessor">#ifndef BOOST_GIL_HISTOGRAM_HPP</span></div>
<div class="line"><a id="l00010" name="l00010"></a><span class="lineno"> 10</span><span class="preprocessor">#define BOOST_GIL_HISTOGRAM_HPP</span></div>
<div class="line"><a id="l00011" name="l00011"></a><span class="lineno"> 11</span> </div>
<div class="line"><a id="l00012" name="l00012"></a><span class="lineno"> 12</span><span class="preprocessor">#include &lt;boost/gil/concepts/concept_check.hpp&gt;</span></div>
<div class="line"><a id="l00013" name="l00013"></a><span class="lineno"> 13</span><span class="preprocessor">#include &lt;boost/gil/metafunctions.hpp&gt;</span></div>
<div class="line"><a id="l00014" name="l00014"></a><span class="lineno"> 14</span><span class="preprocessor">#include &lt;boost/gil/pixel.hpp&gt;</span></div>
<div class="line"><a id="l00015" name="l00015"></a><span class="lineno"> 15</span> </div>
<div class="line"><a id="l00016" name="l00016"></a><span class="lineno"> 16</span><span class="preprocessor">#include &lt;boost/mp11.hpp&gt;</span></div>
<div class="line"><a id="l00017" name="l00017"></a><span class="lineno"> 17</span><span class="preprocessor">#include &lt;boost/type_traits.hpp&gt;</span></div>
<div class="line"><a id="l00018" name="l00018"></a><span class="lineno"> 18</span><span class="preprocessor">#include &lt;boost/functional/hash.hpp&gt;</span></div>
<div class="line"><a id="l00019" name="l00019"></a><span class="lineno"> 19</span> </div>
<div class="line"><a id="l00020" name="l00020"></a><span class="lineno"> 20</span><span class="preprocessor">#include &lt;array&gt;</span></div>
<div class="line"><a id="l00021" name="l00021"></a><span class="lineno"> 21</span><span class="preprocessor">#include &lt;iostream&gt;</span></div>
<div class="line"><a id="l00022" name="l00022"></a><span class="lineno"> 22</span><span class="preprocessor">#include &lt;tuple&gt;</span></div>
<div class="line"><a id="l00023" name="l00023"></a><span class="lineno"> 23</span><span class="preprocessor">#include &lt;utility&gt;</span></div>
<div class="line"><a id="l00024" name="l00024"></a><span class="lineno"> 24</span><span class="preprocessor">#include &lt;vector&gt;</span></div>
<div class="line"><a id="l00025" name="l00025"></a><span class="lineno"> 25</span><span class="preprocessor">#include &lt;type_traits&gt;</span></div>
<div class="line"><a id="l00026" name="l00026"></a><span class="lineno"> 26</span><span class="preprocessor">#include &lt;map&gt;</span></div>
<div class="line"><a id="l00027" name="l00027"></a><span class="lineno"> 27</span><span class="preprocessor">#include &lt;unordered_map&gt;</span></div>
<div class="line"><a id="l00028" name="l00028"></a><span class="lineno"> 28</span> </div>
<div class="line"><a id="l00029" name="l00029"></a><span class="lineno"> 29</span><span class="keyword">namespace </span><a class="code hl_namespace" href="namespaceboost.html">boost</a> { <span class="keyword">namespace </span>gil {</div>
<div class="line"><a id="l00030" name="l00030"></a><span class="lineno"> 30</span> </div>
<div class="line"><a id="l00039" name="l00039"></a><span class="lineno"> 39</span> </div>
<div class="line"><a id="l00040" name="l00040"></a><span class="lineno"> 40</span><span class="keyword">namespace </span>detail {</div>
<div class="line"><a id="l00041" name="l00041"></a><span class="lineno"> 41</span> </div>
<div class="line"><a id="l00044" name="l00044"></a><span class="lineno"> 44</span> </div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno"> 47</span><span class="keyword">template</span> &lt;std::size_t Index, <span class="keyword">typename</span>... T&gt;</div>
<div class="line"><a id="l00048" name="l00048"></a><span class="lineno"> 48</span><span class="keyword">inline</span> <span class="keyword">auto</span> hash_tuple_impl(std::size_t&amp;, std::tuple&lt;T...&gt; <span class="keyword">const</span>&amp;)</div>
<div class="line"><a id="l00049" name="l00049"></a><span class="lineno"> 49</span> -&gt; <span class="keyword">typename</span> std::enable_if&lt;Index == <span class="keyword">sizeof</span>...(T), <span class="keywordtype">void</span>&gt;::type</div>
<div class="line"><a id="l00050" name="l00050"></a><span class="lineno"> 50</span>{</div>
<div class="line"><a id="l00051" name="l00051"></a><span class="lineno"> 51</span> <span class="comment">// terminating case</span></div>
<div class="line"><a id="l00052" name="l00052"></a><span class="lineno"> 52</span>}</div>
<div class="line"><a id="l00053" name="l00053"></a><span class="lineno"> 53</span> </div>
<div class="line"><a id="l00056" name="l00056"></a><span class="lineno"> 56</span><span class="keyword">template</span> &lt;std::size_t Index, <span class="keyword">typename</span>... T&gt;</div>
<div class="line"><a id="l00057" name="l00057"></a><span class="lineno"> 57</span><span class="keyword">inline</span> <span class="keyword">auto</span> hash_tuple_impl(std::size_t&amp; seed, std::tuple&lt;T...&gt; <span class="keyword">const</span>&amp; t)</div>
<div class="line"><a id="l00058" name="l00058"></a><span class="lineno"> 58</span> -&gt; <span class="keyword">typename</span> std::enable_if&lt;Index != <span class="keyword">sizeof</span>...(T), <span class="keywordtype">void</span>&gt;::type</div>
<div class="line"><a id="l00059" name="l00059"></a><span class="lineno"> 59</span>{</div>
<div class="line"><a id="l00060" name="l00060"></a><span class="lineno"> 60</span> boost::hash_combine(seed, std::get&lt;Index&gt;(t));</div>
<div class="line"><a id="l00061" name="l00061"></a><span class="lineno"> 61</span> hash_tuple_impl&lt;Index + 1&gt;(seed, t);</div>
<div class="line"><a id="l00062" name="l00062"></a><span class="lineno"> 62</span>}</div>
<div class="line"><a id="l00063" name="l00063"></a><span class="lineno"> 63</span> </div>
<div class="line"><a id="l00073" name="l00073"></a><span class="lineno"> 73</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span>... T&gt;</div>
<div class="foldopen" id="foldopen00074" data-start="{" data-end="};">
<div class="line"><a id="l00074" name="l00074"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1hash__tuple.html"> 74</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1hash__tuple.html">hash_tuple</a></div>
<div class="line"><a id="l00075" name="l00075"></a><span class="lineno"> 75</span>{</div>
<div class="line"><a id="l00076" name="l00076"></a><span class="lineno"> 76</span> <span class="keyword">auto</span> operator()(std::tuple&lt;T...&gt; <span class="keyword">const</span>&amp; t) <span class="keyword">const</span> -&gt; std::size_t</div>
<div class="line"><a id="l00077" name="l00077"></a><span class="lineno"> 77</span> {</div>
<div class="line"><a id="l00078" name="l00078"></a><span class="lineno"> 78</span> std::size_t seed = 0;</div>
<div class="line"><a id="l00079" name="l00079"></a><span class="lineno"> 79</span> hash_tuple_impl&lt;0&gt;(seed, t);</div>
<div class="line"><a id="l00080" name="l00080"></a><span class="lineno"> 80</span> <span class="keywordflow">return</span> seed;</div>
<div class="line"><a id="l00081" name="l00081"></a><span class="lineno"> 81</span> }</div>
<div class="line"><a id="l00082" name="l00082"></a><span class="lineno"> 82</span>};</div>
</div>
<div class="line"><a id="l00083" name="l00083"></a><span class="lineno"> 83</span> </div>
<div class="line"><a id="l00087" name="l00087"></a><span class="lineno"> 87</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Pixel, std::size_t... I&gt;</div>
<div class="foldopen" id="foldopen00088" data-start="{" data-end="}">
<div class="line"><a id="l00088" name="l00088"></a><span class="lineno"><a class="line" href="group___histogram-_helpers.html#ga534f64cc944af89094e689ebcbf68452"> 88</a></span><span class="keyword">auto</span> <a class="code hl_function" href="group___histogram-_helpers.html#ga534f64cc944af89094e689ebcbf68452">pixel_to_tuple</a>(Pixel <span class="keyword">const</span>&amp; p, boost::mp11::index_sequence&lt;I...&gt;)</div>
<div class="line"><a id="l00089" name="l00089"></a><span class="lineno"> 89</span> -&gt; <span class="keyword">decltype</span>(std::make_tuple(p[I]...))</div>
<div class="line"><a id="l00090" name="l00090"></a><span class="lineno"> 90</span>{</div>
<div class="line"><a id="l00091" name="l00091"></a><span class="lineno"> 91</span> <span class="keywordflow">return</span> std::make_tuple(p[I]...);</div>
<div class="line"><a id="l00092" name="l00092"></a><span class="lineno"> 92</span>}</div>
</div>
<div class="line"><a id="l00093" name="l00093"></a><span class="lineno"> 93</span> </div>
<div class="line"><a id="l00097" name="l00097"></a><span class="lineno"> 97</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Tuple, std::size_t... I&gt;</div>
<div class="foldopen" id="foldopen00098" data-start="{" data-end="}">
<div class="line"><a id="l00098" name="l00098"></a><span class="lineno"><a class="line" href="group___histogram-_helpers.html#ga535069bb5106a74167c0803f3d0e9ffa"> 98</a></span><span class="keyword">auto</span> <a class="code hl_function" href="group___histogram-_helpers.html#ga535069bb5106a74167c0803f3d0e9ffa">tuple_to_tuple</a>(Tuple <span class="keyword">const</span>&amp; t, boost::mp11::index_sequence&lt;I...&gt;)</div>
<div class="line"><a id="l00099" name="l00099"></a><span class="lineno"> 99</span> -&gt; <span class="keyword">decltype</span>(std::make_tuple(std::get&lt;I&gt;(t)...))</div>
<div class="line"><a id="l00100" name="l00100"></a><span class="lineno"> 100</span>{</div>
<div class="line"><a id="l00101" name="l00101"></a><span class="lineno"> 101</span> <span class="keywordflow">return</span> std::make_tuple(std::get&lt;I&gt;(t)...);</div>
<div class="line"><a id="l00102" name="l00102"></a><span class="lineno"> 102</span>}</div>
</div>
<div class="line"><a id="l00103" name="l00103"></a><span class="lineno"> 103</span> </div>
<div class="line"><a id="l00106" name="l00106"></a><span class="lineno"> 106</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Tuple, std::size_t... I&gt;</div>
<div class="line"><a id="l00107" name="l00107"></a><span class="lineno"> 107</span><span class="keywordtype">bool</span> tuple_compare(Tuple <span class="keyword">const</span>&amp; t1, Tuple <span class="keyword">const</span>&amp; t2, boost::mp11::index_sequence&lt;I...&gt;)</div>
<div class="line"><a id="l00108" name="l00108"></a><span class="lineno"> 108</span>{</div>
<div class="line"><a id="l00109" name="l00109"></a><span class="lineno"> 109</span> std::array&lt;bool, std::tuple_size&lt;Tuple&gt;::value&gt; comp_list;</div>
<div class="line"><a id="l00110" name="l00110"></a><span class="lineno"> 110</span> comp_list = {std::get&lt;I&gt;(t1) &lt;= std::get&lt;I&gt;(t2)...};</div>
<div class="line"><a id="l00111" name="l00111"></a><span class="lineno"> 111</span> <span class="keywordtype">bool</span> comp = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00112" name="l00112"></a><span class="lineno"> 112</span> <span class="keywordflow">for</span> (std::size_t i = 0; i &lt; comp_list.size(); i++)</div>
<div class="line"><a id="l00113" name="l00113"></a><span class="lineno"> 113</span> {</div>
<div class="line"><a id="l00114" name="l00114"></a><span class="lineno"> 114</span> comp = comp &amp; comp_list[i];</div>
<div class="line"><a id="l00115" name="l00115"></a><span class="lineno"> 115</span> }</div>
<div class="line"><a id="l00116" name="l00116"></a><span class="lineno"> 116</span> <span class="keywordflow">return</span> comp;</div>
<div class="line"><a id="l00117" name="l00117"></a><span class="lineno"> 117</span>}</div>
<div class="line"><a id="l00118" name="l00118"></a><span class="lineno"> 118</span> </div>
<div class="line"><a id="l00124" name="l00124"></a><span class="lineno"> 124</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Tuple&gt;</div>
<div class="foldopen" id="foldopen00125" data-start="{" data-end="}">
<div class="line"><a id="l00125" name="l00125"></a><span class="lineno"><a class="line" href="group___histogram-_helpers.html#gac1bd824e06dd7f9c9f6d9b8228683a96"> 125</a></span><span class="keywordtype">bool</span> tuple_compare(Tuple <span class="keyword">const</span>&amp; t1, Tuple <span class="keyword">const</span>&amp; t2)</div>
<div class="line"><a id="l00126" name="l00126"></a><span class="lineno"> 126</span>{</div>
<div class="line"><a id="l00127" name="l00127"></a><span class="lineno"> 127</span> std::size_t <span class="keyword">const</span> tuple_size = std::tuple_size&lt;Tuple&gt;::value;</div>
<div class="line"><a id="l00128" name="l00128"></a><span class="lineno"> 128</span> <span class="keyword">auto</span> index_list = boost::mp11::make_index_sequence&lt;tuple_size&gt;{};</div>
<div class="line"><a id="l00129" name="l00129"></a><span class="lineno"> 129</span> <span class="keywordflow">return</span> tuple_compare(t1, t2, index_list);</div>
<div class="line"><a id="l00130" name="l00130"></a><span class="lineno"> 130</span>}</div>
</div>
<div class="line"><a id="l00131" name="l00131"></a><span class="lineno"> 131</span> </div>
<div class="line"><a id="l00136" name="l00136"></a><span class="lineno"> 136</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Tuple&gt;</div>
<div class="foldopen" id="foldopen00137" data-start="{" data-end="};">
<div class="line"><a id="l00137" name="l00137"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1tuple__limit.html"> 137</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1tuple__limit.html">tuple_limit</a></div>
<div class="line"><a id="l00138" name="l00138"></a><span class="lineno"> 138</span>{</div>
<div class="line"><a id="l00139" name="l00139"></a><span class="lineno"> 139</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> Tuple (min)()</div>
<div class="line"><a id="l00140" name="l00140"></a><span class="lineno"> 140</span> {</div>
<div class="line"><a id="l00141" name="l00141"></a><span class="lineno"> 141</span> <span class="keywordflow">return</span> min_impl(boost::mp11::make_index_sequence&lt;std::tuple_size&lt;Tuple&gt;::value&gt;{});</div>
<div class="line"><a id="l00142" name="l00142"></a><span class="lineno"> 142</span> }</div>
<div class="line"><a id="l00143" name="l00143"></a><span class="lineno"> 143</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> Tuple (max)()</div>
<div class="line"><a id="l00144" name="l00144"></a><span class="lineno"> 144</span> {</div>
<div class="line"><a id="l00145" name="l00145"></a><span class="lineno"> 145</span> <span class="keywordflow">return</span> max_impl(boost::mp11::make_index_sequence&lt;std::tuple_size&lt;Tuple&gt;::value&gt;{});</div>
<div class="line"><a id="l00146" name="l00146"></a><span class="lineno"> 146</span> }</div>
<div class="line"><a id="l00147" name="l00147"></a><span class="lineno"> 147</span> </div>
<div class="line"><a id="l00148" name="l00148"></a><span class="lineno"> 148</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00149" name="l00149"></a><span class="lineno"> 149</span> <span class="keyword">template</span> &lt;std::size_t... I&gt;</div>
<div class="line"><a id="l00150" name="l00150"></a><span class="lineno"> 150</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> Tuple min_impl(boost::mp11::index_sequence&lt;I...&gt;)</div>
<div class="line"><a id="l00151" name="l00151"></a><span class="lineno"> 151</span> {</div>
<div class="line"><a id="l00152" name="l00152"></a><span class="lineno"> 152</span> <span class="keywordflow">return</span> std::make_tuple(</div>
<div class="line"><a id="l00153" name="l00153"></a><span class="lineno"> 153</span> (std::numeric_limits&lt;<span class="keyword">typename</span> std::tuple_element&lt;I, Tuple&gt;::type&gt;::min)()...);</div>
<div class="line"><a id="l00154" name="l00154"></a><span class="lineno"> 154</span> }</div>
<div class="line"><a id="l00155" name="l00155"></a><span class="lineno"> 155</span> </div>
<div class="line"><a id="l00156" name="l00156"></a><span class="lineno"> 156</span> <span class="keyword">template</span> &lt;std::size_t... I&gt;</div>
<div class="line"><a id="l00157" name="l00157"></a><span class="lineno"> 157</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> Tuple max_impl(boost::mp11::index_sequence&lt;I...&gt;)</div>
<div class="line"><a id="l00158" name="l00158"></a><span class="lineno"> 158</span> {</div>
<div class="line"><a id="l00159" name="l00159"></a><span class="lineno"> 159</span> <span class="keywordflow">return</span> std::make_tuple(</div>
<div class="line"><a id="l00160" name="l00160"></a><span class="lineno"> 160</span> (std::numeric_limits&lt;<span class="keyword">typename</span> std::tuple_element&lt;I, Tuple&gt;::type&gt;::max)()...);</div>
<div class="line"><a id="l00161" name="l00161"></a><span class="lineno"> 161</span> }</div>
<div class="line"><a id="l00162" name="l00162"></a><span class="lineno"> 162</span>};</div>
</div>
<div class="line"><a id="l00163" name="l00163"></a><span class="lineno"> 163</span> </div>
<div class="line"><a id="l00171" name="l00171"></a><span class="lineno"> 171</span><span class="keyword">template</span> &lt;std::<span class="keywordtype">size_t</span> Dimension&gt;</div>
<div class="foldopen" id="foldopen00172" data-start="{" data-end="};">
<div class="line"><a id="l00172" name="l00172"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1filler.html"> 172</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1filler.html">filler</a></div>
<div class="line"><a id="l00173" name="l00173"></a><span class="lineno"> 173</span>{</div>
<div class="line"><a id="l00174" name="l00174"></a><span class="lineno"> 174</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Container, <span class="keyword">typename</span> Tuple&gt;</div>
<div class="line"><a id="l00175" name="l00175"></a><span class="lineno"> 175</span> <span class="keywordtype">void</span> operator()(Container&amp;, Tuple&amp;, Tuple&amp;, std::size_t)</div>
<div class="line"><a id="l00176" name="l00176"></a><span class="lineno"> 176</span> {</div>
<div class="line"><a id="l00177" name="l00177"></a><span class="lineno"> 177</span> }</div>
<div class="line"><a id="l00178" name="l00178"></a><span class="lineno"> 178</span>};</div>
</div>
<div class="line"><a id="l00179" name="l00179"></a><span class="lineno"> 179</span> </div>
<div class="line"><a id="l00182" name="l00182"></a><span class="lineno"> 182</span><span class="keyword">template</span> &lt;&gt;</div>
<div class="foldopen" id="foldopen00183" data-start="{" data-end="};">
<div class="line"><a id="l00183" name="l00183"></a><span class="lineno"><a class="line" href="structboost_1_1gil_1_1detail_1_1filler_3_011_01_4.html"> 183</a></span><span class="keyword">struct </span><a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1filler.html">filler</a>&lt;1&gt;</div>
<div class="line"><a id="l00184" name="l00184"></a><span class="lineno"> 184</span>{</div>
<div class="line"><a id="l00185" name="l00185"></a><span class="lineno"> 185</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Container, <span class="keyword">typename</span> Tuple&gt;</div>
<div class="line"><a id="l00186" name="l00186"></a><span class="lineno"> 186</span> <span class="keywordtype">void</span> operator()(Container&amp; hist, Tuple&amp; lower, Tuple&amp; upper, std::size_t bin_width = 1)</div>
<div class="line"><a id="l00187" name="l00187"></a><span class="lineno"> 187</span> {</div>
<div class="line"><a id="l00188" name="l00188"></a><span class="lineno"> 188</span> <span class="keywordflow">for</span> (<span class="keyword">auto</span> i = std::get&lt;0&gt;(lower); <span class="keyword">static_cast&lt;</span>std::size_t<span class="keyword">&gt;</span>(std::get&lt;0&gt;(upper) - i) &gt;= bin_width; i += bin_width)</div>
<div class="line"><a id="l00189" name="l00189"></a><span class="lineno"> 189</span> {</div>
<div class="line"><a id="l00190" name="l00190"></a><span class="lineno"> 190</span> hist(i / bin_width) = 0;</div>
<div class="line"><a id="l00191" name="l00191"></a><span class="lineno"> 191</span> }</div>
<div class="line"><a id="l00192" name="l00192"></a><span class="lineno"> 192</span> hist(std::get&lt;0&gt;(upper) / bin_width) = 0;</div>
<div class="line"><a id="l00193" name="l00193"></a><span class="lineno"> 193</span> }</div>
<div class="line"><a id="l00194" name="l00194"></a><span class="lineno"> 194</span>};</div>
</div>
<div class="line"><a id="l00195" name="l00195"></a><span class="lineno"> 195</span> </div>
<div class="line"><a id="l00196" name="l00196"></a><span class="lineno"> 196</span>} <span class="comment">//namespace detail</span></div>
<div class="line"><a id="l00197" name="l00197"></a><span class="lineno"> 197</span> </div>
<div class="line"><a id="l00213" name="l00213"></a><span class="lineno"> 213</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span>... T&gt;</div>
<div class="foldopen" id="foldopen00214" data-start="{" data-end="};">
<div class="line"><a id="l00214" name="l00214"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html"> 214</a></span><span class="keyword">class </span><a class="code hl_class" href="classboost_1_1gil_1_1histogram.html">histogram</a> : <span class="keyword">public</span> std::unordered_map&lt;std::tuple&lt;T...&gt;, double, detail::hash_tuple&lt;T...&gt;&gt;</div>
<div class="line"><a id="l00215" name="l00215"></a><span class="lineno"> 215</span>{</div>
<div class="line"><a id="l00216" name="l00216"></a><span class="lineno"> 216</span> <span class="keyword">using </span>base_t = std::unordered_map&lt;std::tuple&lt;T...&gt;, double, <a class="code hl_struct" href="structboost_1_1gil_1_1detail_1_1hash__tuple.html">detail::hash_tuple</a>&lt;T...&gt;&gt;;</div>
<div class="line"><a id="l00217" name="l00217"></a><span class="lineno"> 217</span> <span class="keyword">using </span>bin_t = boost::mp11::mp_list&lt;T...&gt;;</div>
<div class="line"><a id="l00218" name="l00218"></a><span class="lineno"> 218</span> <span class="keyword">using </span>key_t = <span class="keyword">typename</span> base_t::key_type;</div>
<div class="line"><a id="l00219" name="l00219"></a><span class="lineno"> 219</span> <span class="keyword">using </span>mapped_t = <span class="keyword">typename</span> base_t::mapped_type;</div>
<div class="line"><a id="l00220" name="l00220"></a><span class="lineno"> 220</span> <span class="keyword">using </span>value_t = <span class="keyword">typename</span> base_t::value_type;</div>
<div class="line"><a id="l00221" name="l00221"></a><span class="lineno"> 221</span> </div>
<div class="line"><a id="l00222" name="l00222"></a><span class="lineno"> 222</span><span class="keyword">public</span>:</div>
<div class="line"><a id="l00223" name="l00223"></a><span class="lineno"> 223</span> <a class="code hl_class" href="classboost_1_1gil_1_1histogram.html">histogram</a>() = <span class="keywordflow">default</span>;</div>
<div class="line"><a id="l00224" name="l00224"></a><span class="lineno"> 224</span> </div>
<div class="foldopen" id="foldopen00226" data-start="{" data-end="}">
<div class="line"><a id="l00226" name="l00226"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#a4806809cec84980fac0a10596414e960"> 226</a></span> <span class="keyword">static</span> <span class="keyword">constexpr</span> std::size_t <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#a4806809cec84980fac0a10596414e960">dimension</a>()</div>
<div class="line"><a id="l00227" name="l00227"></a><span class="lineno"> 227</span> {</div>
<div class="line"><a id="l00228" name="l00228"></a><span class="lineno"> 228</span> <span class="keywordflow">return</span> std::tuple_size&lt;key_t&gt;::value;</div>
<div class="line"><a id="l00229" name="l00229"></a><span class="lineno"> 229</span> }</div>
</div>
<div class="line"><a id="l00230" name="l00230"></a><span class="lineno"> 230</span> </div>
<div class="foldopen" id="foldopen00232" data-start="{" data-end="}">
<div class="line"><a id="l00232" name="l00232"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#ac97e35e325de0742709a280bc84dd3c1"> 232</a></span> mapped_t&amp; <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#ac97e35e325de0742709a280bc84dd3c1">operator()</a>(T... indices)</div>
<div class="line"><a id="l00233" name="l00233"></a><span class="lineno"> 233</span> {</div>
<div class="line"><a id="l00234" name="l00234"></a><span class="lineno"> 234</span> <span class="keyword">auto</span> key = std::make_tuple(indices...);</div>
<div class="line"><a id="l00235" name="l00235"></a><span class="lineno"> 235</span> std::size_t <span class="keyword">const</span> index_dimension = std::tuple_size&lt;std::tuple&lt;T...&gt;&gt;::value;</div>
<div class="line"><a id="l00236" name="l00236"></a><span class="lineno"> 236</span> std::size_t <span class="keyword">const</span> histogram_dimension = <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#a4806809cec84980fac0a10596414e960">dimension</a>();</div>
<div class="line"><a id="l00237" name="l00237"></a><span class="lineno"> 237</span> <span class="keyword">static_assert</span>(histogram_dimension == index_dimension, <span class="stringliteral">&quot;Dimensions do not match.&quot;</span>);</div>
<div class="line"><a id="l00238" name="l00238"></a><span class="lineno"> 238</span> </div>
<div class="line"><a id="l00239" name="l00239"></a><span class="lineno"> 239</span> <span class="keywordflow">return</span> base_t::operator[](key);</div>
<div class="line"><a id="l00240" name="l00240"></a><span class="lineno"> 240</span> }</div>
</div>
<div class="line"><a id="l00241" name="l00241"></a><span class="lineno"> 241</span> </div>
<div class="line"><a id="l00244" name="l00244"></a><span class="lineno"> 244</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> OtherType&gt;</div>
<div class="foldopen" id="foldopen00245" data-start="{" data-end="}">
<div class="line"><a id="l00245" name="l00245"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#af92795152d964a6032e959435c828434"> 245</a></span> <span class="keywordtype">bool</span> <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#af92795152d964a6032e959435c828434">equals</a>(OtherType <span class="keyword">const</span>&amp; otherhist)<span class="keyword"> const</span></div>
<div class="line"><a id="l00246" name="l00246"></a><span class="lineno"> 246</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00247" name="l00247"></a><span class="lineno"> 247</span> <span class="keywordtype">bool</span> check = (<a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#a4806809cec84980fac0a10596414e960">dimension</a>() == otherhist.dimension());</div>
<div class="line"><a id="l00248" name="l00248"></a><span class="lineno"> 248</span> </div>
<div class="line"><a id="l00249" name="l00249"></a><span class="lineno"> 249</span> <span class="keyword">using </span>other_value_t = <span class="keyword">typename</span> OtherType::value_type;</div>
<div class="line"><a id="l00250" name="l00250"></a><span class="lineno"> 250</span> std::for_each(otherhist.begin(), otherhist.end(), [&amp;](other_value_t <span class="keyword">const</span>&amp; v) {</div>
<div class="line"><a id="l00251" name="l00251"></a><span class="lineno"> 251</span> key_t key = key_from_tuple(v.first);</div>
<div class="line"><a id="l00252" name="l00252"></a><span class="lineno"> 252</span> if (base_t::find(key) != base_t::end())</div>
<div class="line"><a id="l00253" name="l00253"></a><span class="lineno"> 253</span> {</div>
<div class="line"><a id="l00254" name="l00254"></a><span class="lineno"> 254</span> check = check &amp; (base_t::at(key) == otherhist.at(v.first));</div>
<div class="line"><a id="l00255" name="l00255"></a><span class="lineno"> 255</span> }</div>
<div class="line"><a id="l00256" name="l00256"></a><span class="lineno"> 256</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00257" name="l00257"></a><span class="lineno"> 257</span> {</div>
<div class="line"><a id="l00258" name="l00258"></a><span class="lineno"> 258</span> check = false;</div>
<div class="line"><a id="l00259" name="l00259"></a><span class="lineno"> 259</span> }</div>
<div class="line"><a id="l00260" name="l00260"></a><span class="lineno"> 260</span> });</div>
<div class="line"><a id="l00261" name="l00261"></a><span class="lineno"> 261</span> <span class="keywordflow">return</span> check;</div>
<div class="line"><a id="l00262" name="l00262"></a><span class="lineno"> 262</span> }</div>
</div>
<div class="line"><a id="l00263" name="l00263"></a><span class="lineno"> 263</span> </div>
<div class="foldopen" id="foldopen00266" data-start="{" data-end="}">
<div class="line"><a id="l00266" name="l00266"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#a0dae242b2c1bf16bde24c124d3097c8a"> 266</a></span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#a0dae242b2c1bf16bde24c124d3097c8a">is_pixel_compatible</a>()</div>
<div class="line"><a id="l00267" name="l00267"></a><span class="lineno"> 267</span> {</div>
<div class="line"><a id="l00268" name="l00268"></a><span class="lineno"> 268</span> <span class="keyword">using </span>bin_types = boost::mp11::mp_list&lt;T...&gt;;</div>
<div class="line"><a id="l00269" name="l00269"></a><span class="lineno"> 269</span> <span class="keywordflow">return</span> boost::mp11::mp_all_of&lt;bin_types, std::is_arithmetic&gt;::value;</div>
<div class="line"><a id="l00270" name="l00270"></a><span class="lineno"> 270</span> }</div>
</div>
<div class="line"><a id="l00271" name="l00271"></a><span class="lineno"> 271</span> </div>
<div class="line"><a id="l00274" name="l00274"></a><span class="lineno"> 274</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Tuple&gt;</div>
<div class="foldopen" id="foldopen00275" data-start="{" data-end="}">
<div class="line"><a id="l00275" name="l00275"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#ae4fb7132988f0d964a632b88e34347d8"> 275</a></span> <span class="keywordtype">bool</span> <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#ae4fb7132988f0d964a632b88e34347d8">is_tuple_compatible</a>(Tuple <span class="keyword">const</span>&amp;)</div>
<div class="line"><a id="l00276" name="l00276"></a><span class="lineno"> 276</span> {</div>
<div class="line"><a id="l00277" name="l00277"></a><span class="lineno"> 277</span> std::size_t <span class="keyword">const</span> tuple_size = std::tuple_size&lt;Tuple&gt;::value;</div>
<div class="line"><a id="l00278" name="l00278"></a><span class="lineno"> 278</span> std::size_t <span class="keyword">const</span> histogram_size = dimension();</div>
<div class="line"><a id="l00279" name="l00279"></a><span class="lineno"> 279</span> <span class="comment">// TODO : Explore consequence of using if-constexpr</span></div>
<div class="line"><a id="l00280" name="l00280"></a><span class="lineno"> 280</span> <span class="keyword">using </span>sequence_type = <span class="keyword">typename</span> std::conditional</div>
<div class="line"><a id="l00281" name="l00281"></a><span class="lineno"> 281</span> &lt;</div>
<div class="line"><a id="l00282" name="l00282"></a><span class="lineno"> 282</span> tuple_size &gt;= histogram_size,</div>
<div class="line"><a id="l00283" name="l00283"></a><span class="lineno"> 283</span> boost::mp11::make_index_sequence&lt;histogram_size&gt;,</div>
<div class="line"><a id="l00284" name="l00284"></a><span class="lineno"> 284</span> boost::mp11::make_index_sequence&lt;tuple_size&gt;</div>
<div class="line"><a id="l00285" name="l00285"></a><span class="lineno"> 285</span> &gt;::type;</div>
<div class="line"><a id="l00286" name="l00286"></a><span class="lineno"> 286</span> </div>
<div class="line"><a id="l00287" name="l00287"></a><span class="lineno"> 287</span> <span class="keywordflow">if</span> (is_tuple_size_compatible&lt;Tuple&gt;())</div>
<div class="line"><a id="l00288" name="l00288"></a><span class="lineno"> 288</span> <span class="keywordflow">return</span> is_tuple_type_compatible&lt;Tuple&gt;(sequence_type{});</div>
<div class="line"><a id="l00289" name="l00289"></a><span class="lineno"> 289</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00290" name="l00290"></a><span class="lineno"> 290</span> <span class="keywordflow">return</span> <span class="keyword">false</span>;</div>
<div class="line"><a id="l00291" name="l00291"></a><span class="lineno"> 291</span> }</div>
</div>
<div class="line"><a id="l00292" name="l00292"></a><span class="lineno"> 292</span> </div>
<div class="line"><a id="l00295" name="l00295"></a><span class="lineno"> 295</span> <span class="keyword">template</span> &lt;std::size_t... Dimensions, <span class="keyword">typename</span> Tuple&gt;</div>
<div class="foldopen" id="foldopen00296" data-start="{" data-end="}">
<div class="line"><a id="l00296" name="l00296"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#a1326d1132f56f08297dce325b4b4ff7a"> 296</a></span> key_t <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#a1326d1132f56f08297dce325b4b4ff7a">key_from_tuple</a>(Tuple <span class="keyword">const</span>&amp; t)<span class="keyword"> const</span></div>
<div class="line"><a id="l00297" name="l00297"></a><span class="lineno"> 297</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00298" name="l00298"></a><span class="lineno"> 298</span> <span class="keyword">using </span>index_list = boost::mp11::mp_list_c&lt;std::size_t, Dimensions...&gt;;</div>
<div class="line"><a id="l00299" name="l00299"></a><span class="lineno"> 299</span> std::size_t <span class="keyword">const</span> index_list_size = boost::mp11::mp_size&lt;index_list&gt;::value;</div>
<div class="line"><a id="l00300" name="l00300"></a><span class="lineno"> 300</span> std::size_t <span class="keyword">const</span> tuple_size = std::tuple_size&lt;Tuple&gt;::value;</div>
<div class="line"><a id="l00301" name="l00301"></a><span class="lineno"> 301</span> std::size_t <span class="keyword">const</span> histogram_dimension = dimension();</div>
<div class="line"><a id="l00302" name="l00302"></a><span class="lineno"> 302</span> </div>
<div class="line"><a id="l00303" name="l00303"></a><span class="lineno"> 303</span> <span class="keyword">static_assert</span>(</div>
<div class="line"><a id="l00304" name="l00304"></a><span class="lineno"> 304</span> ((index_list_size != 0 &amp;&amp; index_list_size == histogram_dimension) ||</div>
<div class="line"><a id="l00305" name="l00305"></a><span class="lineno"> 305</span> (tuple_size == histogram_dimension)),</div>
<div class="line"><a id="l00306" name="l00306"></a><span class="lineno"> 306</span> <span class="stringliteral">&quot;Tuple and histogram key of different sizes&quot;</span>);</div>
<div class="line"><a id="l00307" name="l00307"></a><span class="lineno"> 307</span> </div>
<div class="line"><a id="l00308" name="l00308"></a><span class="lineno"> 308</span> <span class="keyword">using </span>new_index_list = <span class="keyword">typename</span> std::conditional</div>
<div class="line"><a id="l00309" name="l00309"></a><span class="lineno"> 309</span> &lt;</div>
<div class="line"><a id="l00310" name="l00310"></a><span class="lineno"> 310</span> index_list_size == 0,</div>
<div class="line"><a id="l00311" name="l00311"></a><span class="lineno"> 311</span> boost::mp11::mp_list_c&lt;std::size_t, 0&gt;,</div>
<div class="line"><a id="l00312" name="l00312"></a><span class="lineno"> 312</span> index_list</div>
<div class="line"><a id="l00313" name="l00313"></a><span class="lineno"> 313</span> &gt;::type;</div>
<div class="line"><a id="l00314" name="l00314"></a><span class="lineno"> 314</span> </div>
<div class="line"><a id="l00315" name="l00315"></a><span class="lineno"> 315</span> std::size_t <span class="keyword">const</span> min =</div>
<div class="line"><a id="l00316" name="l00316"></a><span class="lineno"> 316</span> boost::mp11::mp_min_element&lt;new_index_list, boost::mp11::mp_less&gt;::value;</div>
<div class="line"><a id="l00317" name="l00317"></a><span class="lineno"> 317</span> </div>
<div class="line"><a id="l00318" name="l00318"></a><span class="lineno"> 318</span> std::size_t <span class="keyword">const</span> max =</div>
<div class="line"><a id="l00319" name="l00319"></a><span class="lineno"> 319</span> boost::mp11::mp_max_element&lt;new_index_list, boost::mp11::mp_less&gt;::value;</div>
<div class="line"><a id="l00320" name="l00320"></a><span class="lineno"> 320</span> </div>
<div class="line"><a id="l00321" name="l00321"></a><span class="lineno"> 321</span> <span class="keyword">static_assert</span>((0 &lt;= min &amp;&amp; max &lt; tuple_size) || index_list_size == 0, <span class="stringliteral">&quot;Index out of Range&quot;</span>);</div>
<div class="line"><a id="l00322" name="l00322"></a><span class="lineno"> 322</span> </div>
<div class="line"><a id="l00323" name="l00323"></a><span class="lineno"> 323</span> <span class="keyword">using </span>seq1 = boost::mp11::make_index_sequence&lt;histogram_dimension&gt;;</div>
<div class="line"><a id="l00324" name="l00324"></a><span class="lineno"> 324</span> <span class="keyword">using </span>seq2 = boost::mp11::index_sequence&lt;Dimensions...&gt;;</div>
<div class="line"><a id="l00325" name="l00325"></a><span class="lineno"> 325</span> <span class="comment">// TODO : Explore consequence of using if-constexpr</span></div>
<div class="line"><a id="l00326" name="l00326"></a><span class="lineno"> 326</span> <span class="keyword">using </span>sequence_type = <span class="keyword">typename</span> std::conditional&lt;index_list_size == 0, seq1, seq2&gt;::type;</div>
<div class="line"><a id="l00327" name="l00327"></a><span class="lineno"> 327</span> </div>
<div class="line"><a id="l00328" name="l00328"></a><span class="lineno"> 328</span> <span class="keyword">auto</span> key = <a class="code hl_function" href="group___histogram-_helpers.html#ga535069bb5106a74167c0803f3d0e9ffa">detail::tuple_to_tuple</a>(t, sequence_type{});</div>
<div class="line"><a id="l00329" name="l00329"></a><span class="lineno"> 329</span> <span class="keyword">static_assert</span>(</div>
<div class="line"><a id="l00330" name="l00330"></a><span class="lineno"> 330</span> is_tuple_type_compatible&lt;Tuple&gt;(seq1{}),</div>
<div class="line"><a id="l00331" name="l00331"></a><span class="lineno"> 331</span> <span class="stringliteral">&quot;Tuple type and histogram type not compatible.&quot;</span>);</div>
<div class="line"><a id="l00332" name="l00332"></a><span class="lineno"> 332</span> </div>
<div class="line"><a id="l00333" name="l00333"></a><span class="lineno"> 333</span> <span class="keywordflow">return</span> make_histogram_key(key, seq1{});</div>
<div class="line"><a id="l00334" name="l00334"></a><span class="lineno"> 334</span> }</div>
</div>
<div class="line"><a id="l00335" name="l00335"></a><span class="lineno"> 335</span> </div>
<div class="line"><a id="l00338" name="l00338"></a><span class="lineno"> 338</span> <span class="keyword">template</span> &lt;std::size_t... Dimensions, <span class="keyword">typename</span> Pixel&gt;</div>
<div class="foldopen" id="foldopen00339" data-start="{" data-end="}">
<div class="line"><a id="l00339" name="l00339"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#a72e5f7159495f2b7a131acc41d686c23"> 339</a></span> key_t <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#a72e5f7159495f2b7a131acc41d686c23">key_from_pixel</a>(Pixel <span class="keyword">const</span>&amp; p)<span class="keyword"> const</span></div>
<div class="line"><a id="l00340" name="l00340"></a><span class="lineno"> 340</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00341" name="l00341"></a><span class="lineno"> 341</span> <span class="keyword">using </span>index_list = boost::mp11::mp_list_c&lt;std::size_t, Dimensions...&gt;;</div>
<div class="line"><a id="l00342" name="l00342"></a><span class="lineno"> 342</span> std::size_t <span class="keyword">const</span> index_list_size = boost::mp11::mp_size&lt;index_list&gt;::value;</div>
<div class="line"><a id="l00343" name="l00343"></a><span class="lineno"> 343</span> std::size_t <span class="keyword">const</span> pixel_dimension = <a class="code hl_struct" href="structboost_1_1gil_1_1num__channels.html">num_channels&lt;Pixel&gt;::value</a>;</div>
<div class="line"><a id="l00344" name="l00344"></a><span class="lineno"> 344</span> std::size_t <span class="keyword">const</span> histogram_dimension = dimension();</div>
<div class="line"><a id="l00345" name="l00345"></a><span class="lineno"> 345</span> </div>
<div class="line"><a id="l00346" name="l00346"></a><span class="lineno"> 346</span> <span class="keyword">static_assert</span>(</div>
<div class="line"><a id="l00347" name="l00347"></a><span class="lineno"> 347</span> ((index_list_size != 0 &amp;&amp; index_list_size == histogram_dimension) ||</div>
<div class="line"><a id="l00348" name="l00348"></a><span class="lineno"> 348</span> (index_list_size == 0 &amp;&amp; pixel_dimension == histogram_dimension)) &amp;&amp;</div>
<div class="line"><a id="l00349" name="l00349"></a><span class="lineno"> 349</span> is_pixel_compatible(),</div>
<div class="line"><a id="l00350" name="l00350"></a><span class="lineno"> 350</span> <span class="stringliteral">&quot;Pixels and histogram key are not compatible.&quot;</span>);</div>
<div class="line"><a id="l00351" name="l00351"></a><span class="lineno"> 351</span> </div>
<div class="line"><a id="l00352" name="l00352"></a><span class="lineno"> 352</span> <span class="keyword">using </span>new_index_list = <span class="keyword">typename</span> std::conditional</div>
<div class="line"><a id="l00353" name="l00353"></a><span class="lineno"> 353</span> &lt;</div>
<div class="line"><a id="l00354" name="l00354"></a><span class="lineno"> 354</span> index_list_size == 0,</div>
<div class="line"><a id="l00355" name="l00355"></a><span class="lineno"> 355</span> boost::mp11::mp_list_c&lt;std::size_t, 0&gt;,</div>
<div class="line"><a id="l00356" name="l00356"></a><span class="lineno"> 356</span> index_list</div>
<div class="line"><a id="l00357" name="l00357"></a><span class="lineno"> 357</span> &gt;::type;</div>
<div class="line"><a id="l00358" name="l00358"></a><span class="lineno"> 358</span> </div>
<div class="line"><a id="l00359" name="l00359"></a><span class="lineno"> 359</span> std::size_t <span class="keyword">const</span> min =</div>
<div class="line"><a id="l00360" name="l00360"></a><span class="lineno"> 360</span> boost::mp11::mp_min_element&lt;new_index_list, boost::mp11::mp_less&gt;::value;</div>
<div class="line"><a id="l00361" name="l00361"></a><span class="lineno"> 361</span> </div>
<div class="line"><a id="l00362" name="l00362"></a><span class="lineno"> 362</span> std::size_t <span class="keyword">const</span> max =</div>
<div class="line"><a id="l00363" name="l00363"></a><span class="lineno"> 363</span> boost::mp11::mp_max_element&lt;new_index_list, boost::mp11::mp_less&gt;::value;</div>
<div class="line"><a id="l00364" name="l00364"></a><span class="lineno"> 364</span> </div>
<div class="line"><a id="l00365" name="l00365"></a><span class="lineno"> 365</span> <span class="keyword">static_assert</span>(</div>
<div class="line"><a id="l00366" name="l00366"></a><span class="lineno"> 366</span> (0 &lt;= min &amp;&amp; max &lt; pixel_dimension) || index_list_size == 0, <span class="stringliteral">&quot;Index out of Range&quot;</span>);</div>
<div class="line"><a id="l00367" name="l00367"></a><span class="lineno"> 367</span> </div>
<div class="line"><a id="l00368" name="l00368"></a><span class="lineno"> 368</span> <span class="keyword">using </span>seq1 = boost::mp11::make_index_sequence&lt;histogram_dimension&gt;;</div>
<div class="line"><a id="l00369" name="l00369"></a><span class="lineno"> 369</span> <span class="keyword">using </span>seq2 = boost::mp11::index_sequence&lt;Dimensions...&gt;;</div>
<div class="line"><a id="l00370" name="l00370"></a><span class="lineno"> 370</span> <span class="keyword">using </span>sequence_type = <span class="keyword">typename</span> std::conditional&lt;index_list_size == 0, seq1, seq2&gt;::type;</div>
<div class="line"><a id="l00371" name="l00371"></a><span class="lineno"> 371</span> </div>
<div class="line"><a id="l00372" name="l00372"></a><span class="lineno"> 372</span> <span class="keyword">auto</span> key = <a class="code hl_function" href="group___histogram-_helpers.html#ga534f64cc944af89094e689ebcbf68452">detail::pixel_to_tuple</a>(p, sequence_type{});</div>
<div class="line"><a id="l00373" name="l00373"></a><span class="lineno"> 373</span> <span class="keywordflow">return</span> make_histogram_key(key, seq1{});</div>
<div class="line"><a id="l00374" name="l00374"></a><span class="lineno"> 374</span> }</div>
</div>
<div class="line"><a id="l00375" name="l00375"></a><span class="lineno"> 375</span> </div>
<div class="foldopen" id="foldopen00377" data-start="{" data-end="}">
<div class="line"><a id="l00377" name="l00377"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#ac5b0f6998ccb8ac1e5fb735acf8735b0"> 377</a></span> key_t <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#ac5b0f6998ccb8ac1e5fb735acf8735b0">nearest_key</a>(key_t <span class="keyword">const</span>&amp; k)<span class="keyword"> const</span></div>
<div class="line"><a id="l00378" name="l00378"></a><span class="lineno"> 378</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00379" name="l00379"></a><span class="lineno"> 379</span> <span class="keyword">using </span>check_list = boost::mp11::mp_list&lt;boost::has_less&lt;T&gt;...&gt;;</div>
<div class="line"><a id="l00380" name="l00380"></a><span class="lineno"> 380</span> <span class="keyword">static_assert</span>(</div>
<div class="line"><a id="l00381" name="l00381"></a><span class="lineno"> 381</span> boost::mp11::mp_all_of&lt;check_list, boost::mp11::mp_to_bool&gt;::value,</div>
<div class="line"><a id="l00382" name="l00382"></a><span class="lineno"> 382</span> <span class="stringliteral">&quot;Keys are not comparable.&quot;</span>);</div>
<div class="line"><a id="l00383" name="l00383"></a><span class="lineno"> 383</span> <span class="keyword">auto</span> nearest_k = k;</div>
<div class="line"><a id="l00384" name="l00384"></a><span class="lineno"> 384</span> <span class="keywordflow">if</span> (base_t::find(k) != base_t::end())</div>
<div class="line"><a id="l00385" name="l00385"></a><span class="lineno"> 385</span> {</div>
<div class="line"><a id="l00386" name="l00386"></a><span class="lineno"> 386</span> <span class="keywordflow">return</span> nearest_k;</div>
<div class="line"><a id="l00387" name="l00387"></a><span class="lineno"> 387</span> }</div>
<div class="line"><a id="l00388" name="l00388"></a><span class="lineno"> 388</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00389" name="l00389"></a><span class="lineno"> 389</span> {</div>
<div class="line"><a id="l00390" name="l00390"></a><span class="lineno"> 390</span> <span class="keywordtype">bool</span> once = <span class="keyword">true</span>;</div>
<div class="line"><a id="l00391" name="l00391"></a><span class="lineno"> 391</span> std::for_each(base_t::begin(), base_t::end(), [&amp;](value_t <span class="keyword">const</span>&amp; v) {</div>
<div class="line"><a id="l00392" name="l00392"></a><span class="lineno"> 392</span> <span class="keywordflow">if</span> (v.first &lt;= k)</div>
<div class="line"><a id="l00393" name="l00393"></a><span class="lineno"> 393</span> {</div>
<div class="line"><a id="l00394" name="l00394"></a><span class="lineno"> 394</span> if (once)</div>
<div class="line"><a id="l00395" name="l00395"></a><span class="lineno"> 395</span> {</div>
<div class="line"><a id="l00396" name="l00396"></a><span class="lineno"> 396</span> once = !once;</div>
<div class="line"><a id="l00397" name="l00397"></a><span class="lineno"> 397</span> nearest_k = v.first;</div>
<div class="line"><a id="l00398" name="l00398"></a><span class="lineno"> 398</span> }</div>
<div class="line"><a id="l00399" name="l00399"></a><span class="lineno"> 399</span> <span class="keywordflow">else</span> if (nearest_k &lt; v.first)</div>
<div class="line"><a id="l00400" name="l00400"></a><span class="lineno"> 400</span> nearest_k = v.first;</div>
<div class="line"><a id="l00401" name="l00401"></a><span class="lineno"> 401</span> }</div>
<div class="line"><a id="l00402" name="l00402"></a><span class="lineno"> 402</span> });</div>
<div class="line"><a id="l00403" name="l00403"></a><span class="lineno"> 403</span> <span class="keywordflow">return</span> nearest_k;</div>
<div class="line"><a id="l00404" name="l00404"></a><span class="lineno"> 404</span> }</div>
<div class="line"><a id="l00405" name="l00405"></a><span class="lineno"> 405</span> }</div>
</div>
<div class="line"><a id="l00406" name="l00406"></a><span class="lineno"> 406</span> </div>
<div class="line"><a id="l00408" name="l00408"></a><span class="lineno"> 408</span> <span class="keyword">template</span> &lt;std::size_t... Dimensions, <span class="keyword">typename</span> SrcView&gt;</div>
<div class="foldopen" id="foldopen00409" data-start="{" data-end="}">
<div class="line"><a id="l00409" name="l00409"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#a449f63da7d6f11751675a95279013a98"> 409</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#a449f63da7d6f11751675a95279013a98">fill</a>(</div>
<div class="line"><a id="l00410" name="l00410"></a><span class="lineno"> 410</span> SrcView <span class="keyword">const</span>&amp; srcview,</div>
<div class="line"><a id="l00411" name="l00411"></a><span class="lineno"> 411</span> std::size_t bin_width = 1,</div>
<div class="line"><a id="l00412" name="l00412"></a><span class="lineno"> 412</span> <span class="keywordtype">bool</span> applymask = <span class="keyword">false</span>,</div>
<div class="line"><a id="l00413" name="l00413"></a><span class="lineno"> 413</span> std::vector&lt;std::vector&lt;bool&gt;&gt; mask = {},</div>
<div class="line"><a id="l00414" name="l00414"></a><span class="lineno"> 414</span> key_t lower = key_t(),</div>
<div class="line"><a id="l00415" name="l00415"></a><span class="lineno"> 415</span> key_t upper = key_t(),</div>
<div class="line"><a id="l00416" name="l00416"></a><span class="lineno"> 416</span> <span class="keywordtype">bool</span> setlimits = <span class="keyword">false</span>)</div>
<div class="line"><a id="l00417" name="l00417"></a><span class="lineno"> 417</span> {</div>
<div class="line"><a id="l00418" name="l00418"></a><span class="lineno"> 418</span> gil_function_requires&lt;ImageViewConcept&lt;SrcView&gt;&gt;();</div>
<div class="line"><a id="l00419" name="l00419"></a><span class="lineno"> 419</span> <span class="keyword">using </span>channel_t = <span class="keyword">typename</span> <a class="code hl_struct" href="structboost_1_1gil_1_1channel__type.html">channel_type&lt;SrcView&gt;::type</a>;</div>
<div class="line"><a id="l00420" name="l00420"></a><span class="lineno"> 420</span> </div>
<div class="line"><a id="l00421" name="l00421"></a><span class="lineno"> 421</span> <span class="keywordflow">for</span> (std::ptrdiff_t src_y = 0; src_y &lt; srcview.height(); ++src_y)</div>
<div class="line"><a id="l00422" name="l00422"></a><span class="lineno"> 422</span> {</div>
<div class="line"><a id="l00423" name="l00423"></a><span class="lineno"> 423</span> <span class="keyword">auto</span> src_it = srcview.row_begin(src_y);</div>
<div class="line"><a id="l00424" name="l00424"></a><span class="lineno"> 424</span> <span class="keywordflow">for</span> (std::ptrdiff_t src_x = 0; src_x &lt; srcview.width(); ++src_x)</div>
<div class="line"><a id="l00425" name="l00425"></a><span class="lineno"> 425</span> {</div>
<div class="line"><a id="l00426" name="l00426"></a><span class="lineno"> 426</span> <span class="keywordflow">if</span> (applymask &amp;&amp; !mask[src_y][src_x])</div>
<div class="line"><a id="l00427" name="l00427"></a><span class="lineno"> 427</span> <span class="keywordflow">continue</span>;</div>
<div class="line"><a id="l00428" name="l00428"></a><span class="lineno"> 428</span> <span class="keyword">auto</span> scaled_px = src_it[src_x];</div>
<div class="line"><a id="l00429" name="l00429"></a><span class="lineno"> 429</span> static_for_each(scaled_px, [&amp;](channel_t&amp; ch) {</div>
<div class="line"><a id="l00430" name="l00430"></a><span class="lineno"> 430</span> ch = ch / bin_width;</div>
<div class="line"><a id="l00431" name="l00431"></a><span class="lineno"> 431</span> });</div>
<div class="line"><a id="l00432" name="l00432"></a><span class="lineno"> 432</span> <span class="keyword">auto</span> key = key_from_pixel&lt;Dimensions...&gt;(scaled_px);</div>
<div class="line"><a id="l00433" name="l00433"></a><span class="lineno"> 433</span> <span class="keywordflow">if</span> (!setlimits ||</div>
<div class="line"><a id="l00434" name="l00434"></a><span class="lineno"> 434</span> (detail::tuple_compare(lower, key) &amp;&amp; detail::tuple_compare(key, upper)))</div>
<div class="line"><a id="l00435" name="l00435"></a><span class="lineno"> 435</span> base_t::operator[](key)++;</div>
<div class="line"><a id="l00436" name="l00436"></a><span class="lineno"> 436</span> }</div>
<div class="line"><a id="l00437" name="l00437"></a><span class="lineno"> 437</span> }</div>
<div class="line"><a id="l00438" name="l00438"></a><span class="lineno"> 438</span> }</div>
</div>
<div class="line"><a id="l00439" name="l00439"></a><span class="lineno"> 439</span> </div>
<div class="line"><a id="l00441" name="l00441"></a><span class="lineno"> 441</span> <span class="keyword">template</span> &lt;std::size_t... Dimensions, <span class="keyword">typename</span> Tuple&gt;</div>
<div class="foldopen" id="foldopen00442" data-start="{" data-end="}">
<div class="line"><a id="l00442" name="l00442"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#a51a9548281df868dbe64edf2616d025d"> 442</a></span> <a class="code hl_class" href="classboost_1_1gil_1_1histogram.html">histogram</a> <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#a51a9548281df868dbe64edf2616d025d">sub_histogram</a>(Tuple <span class="keyword">const</span>&amp; t1, Tuple <span class="keyword">const</span>&amp; t2)</div>
<div class="line"><a id="l00443" name="l00443"></a><span class="lineno"> 443</span> {</div>
<div class="line"><a id="l00444" name="l00444"></a><span class="lineno"> 444</span> <span class="keyword">using </span>index_list = boost::mp11::mp_list_c&lt;std::size_t, Dimensions...&gt;;</div>
<div class="line"><a id="l00445" name="l00445"></a><span class="lineno"> 445</span> std::size_t <span class="keyword">const</span> index_list_size = boost::mp11::mp_size&lt;index_list&gt;::value;</div>
<div class="line"><a id="l00446" name="l00446"></a><span class="lineno"> 446</span> std::size_t <span class="keyword">const</span> histogram_dimension = dimension();</div>
<div class="line"><a id="l00447" name="l00447"></a><span class="lineno"> 447</span> </div>
<div class="line"><a id="l00448" name="l00448"></a><span class="lineno"> 448</span> std::size_t <span class="keyword">const</span> min =</div>
<div class="line"><a id="l00449" name="l00449"></a><span class="lineno"> 449</span> boost::mp11::mp_min_element&lt;index_list, boost::mp11::mp_less&gt;::value;</div>
<div class="line"><a id="l00450" name="l00450"></a><span class="lineno"> 450</span> </div>
<div class="line"><a id="l00451" name="l00451"></a><span class="lineno"> 451</span> std::size_t <span class="keyword">const</span> max =</div>
<div class="line"><a id="l00452" name="l00452"></a><span class="lineno"> 452</span> boost::mp11::mp_max_element&lt;index_list, boost::mp11::mp_less&gt;::value;</div>
<div class="line"><a id="l00453" name="l00453"></a><span class="lineno"> 453</span> </div>
<div class="line"><a id="l00454" name="l00454"></a><span class="lineno"> 454</span> <span class="keyword">static_assert</span>(</div>
<div class="line"><a id="l00455" name="l00455"></a><span class="lineno"> 455</span> (0 &lt;= min &amp;&amp; max &lt; histogram_dimension) &amp;&amp; index_list_size &lt; histogram_dimension,</div>
<div class="line"><a id="l00456" name="l00456"></a><span class="lineno"> 456</span> <span class="stringliteral">&quot;Index out of Range&quot;</span>);</div>
<div class="line"><a id="l00457" name="l00457"></a><span class="lineno"> 457</span> </div>
<div class="line"><a id="l00458" name="l00458"></a><span class="lineno"> 458</span> <span class="keyword">using </span>seq1 = boost::mp11::make_index_sequence&lt;dimension()&gt;;</div>
<div class="line"><a id="l00459" name="l00459"></a><span class="lineno"> 459</span> <span class="keyword">using </span>seq2 = boost::mp11::index_sequence&lt;Dimensions...&gt;;</div>
<div class="line"><a id="l00460" name="l00460"></a><span class="lineno"> 460</span> </div>
<div class="line"><a id="l00461" name="l00461"></a><span class="lineno"> 461</span> <span class="keyword">static_assert</span>(</div>
<div class="line"><a id="l00462" name="l00462"></a><span class="lineno"> 462</span> is_tuple_type_compatible&lt;Tuple&gt;(seq1{}),</div>
<div class="line"><a id="l00463" name="l00463"></a><span class="lineno"> 463</span> <span class="stringliteral">&quot;Tuple type and histogram type not compatible.&quot;</span>);</div>
<div class="line"><a id="l00464" name="l00464"></a><span class="lineno"> 464</span> </div>
<div class="line"><a id="l00465" name="l00465"></a><span class="lineno"> 465</span> <span class="keyword">auto</span> low = make_histogram_key(t1, seq1{});</div>
<div class="line"><a id="l00466" name="l00466"></a><span class="lineno"> 466</span> <span class="keyword">auto</span> low_key = detail::tuple_to_tuple(low, seq2{});</div>
<div class="line"><a id="l00467" name="l00467"></a><span class="lineno"> 467</span> <span class="keyword">auto</span> high = make_histogram_key(t2, seq1{});</div>
<div class="line"><a id="l00468" name="l00468"></a><span class="lineno"> 468</span> <span class="keyword">auto</span> high_key = detail::tuple_to_tuple(high, seq2{});</div>
<div class="line"><a id="l00469" name="l00469"></a><span class="lineno"> 469</span> </div>
<div class="line"><a id="l00470" name="l00470"></a><span class="lineno"> 470</span> <a class="code hl_class" href="classboost_1_1gil_1_1histogram.html">histogram</a> sub_h;</div>
<div class="line"><a id="l00471" name="l00471"></a><span class="lineno"> 471</span> std::for_each(base_t::begin(), base_t::end(), [&amp;](value_t <span class="keyword">const</span>&amp; k) {</div>
<div class="line"><a id="l00472" name="l00472"></a><span class="lineno"> 472</span> <span class="keyword">auto</span> tmp_key = detail::tuple_to_tuple(k.first, seq2{});</div>
<div class="line"><a id="l00473" name="l00473"></a><span class="lineno"> 473</span> <span class="keywordflow">if</span> (low_key &lt;= tmp_key &amp;&amp; tmp_key &lt;= high_key)</div>
<div class="line"><a id="l00474" name="l00474"></a><span class="lineno"> 474</span> sub_h[k.first] += base_t::operator[](k.first);</div>
<div class="line"><a id="l00475" name="l00475"></a><span class="lineno"> 475</span> });</div>
<div class="line"><a id="l00476" name="l00476"></a><span class="lineno"> 476</span> <span class="keywordflow">return</span> sub_h;</div>
<div class="line"><a id="l00477" name="l00477"></a><span class="lineno"> 477</span> }</div>
</div>
<div class="line"><a id="l00478" name="l00478"></a><span class="lineno"> 478</span> </div>
<div class="line"><a id="l00480" name="l00480"></a><span class="lineno"> 480</span> <span class="keyword">template</span> &lt;std::size_t... Dimensions&gt;</div>
<div class="foldopen" id="foldopen00481" data-start="{" data-end="}">
<div class="line"><a id="l00481" name="l00481"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#a0852d4b6aa88a6268acabd2a927322b3"> 481</a></span> <a class="code hl_class" href="classboost_1_1gil_1_1histogram.html">histogram&lt;boost::mp11::mp_at&lt;bin_t, boost::mp11::mp_size_t&lt;Dimensions&gt;</a>&gt;...&gt; <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#a0852d4b6aa88a6268acabd2a927322b3">sub_histogram</a>()</div>
<div class="line"><a id="l00482" name="l00482"></a><span class="lineno"> 482</span> {</div>
<div class="line"><a id="l00483" name="l00483"></a><span class="lineno"> 483</span> <span class="keyword">using </span>index_list = boost::mp11::mp_list_c&lt;std::size_t, Dimensions...&gt;;</div>
<div class="line"><a id="l00484" name="l00484"></a><span class="lineno"> 484</span> std::size_t <span class="keyword">const</span> index_list_size = boost::mp11::mp_size&lt;index_list&gt;::value;</div>
<div class="line"><a id="l00485" name="l00485"></a><span class="lineno"> 485</span> std::size_t <span class="keyword">const</span> histogram_dimension = dimension();</div>
<div class="line"><a id="l00486" name="l00486"></a><span class="lineno"> 486</span> </div>
<div class="line"><a id="l00487" name="l00487"></a><span class="lineno"> 487</span> std::size_t <span class="keyword">const</span> min =</div>
<div class="line"><a id="l00488" name="l00488"></a><span class="lineno"> 488</span> boost::mp11::mp_min_element&lt;index_list, boost::mp11::mp_less&gt;::value;</div>
<div class="line"><a id="l00489" name="l00489"></a><span class="lineno"> 489</span> </div>
<div class="line"><a id="l00490" name="l00490"></a><span class="lineno"> 490</span> std::size_t <span class="keyword">const</span> max =</div>
<div class="line"><a id="l00491" name="l00491"></a><span class="lineno"> 491</span> boost::mp11::mp_max_element&lt;index_list, boost::mp11::mp_less&gt;::value;</div>
<div class="line"><a id="l00492" name="l00492"></a><span class="lineno"> 492</span> </div>
<div class="line"><a id="l00493" name="l00493"></a><span class="lineno"> 493</span> <span class="keyword">static_assert</span>(</div>
<div class="line"><a id="l00494" name="l00494"></a><span class="lineno"> 494</span> (0 &lt;= min &amp;&amp; max &lt; histogram_dimension) &amp;&amp; index_list_size &lt; histogram_dimension,</div>
<div class="line"><a id="l00495" name="l00495"></a><span class="lineno"> 495</span> <span class="stringliteral">&quot;Index out of Range&quot;</span>);</div>
<div class="line"><a id="l00496" name="l00496"></a><span class="lineno"> 496</span> </div>
<div class="line"><a id="l00497" name="l00497"></a><span class="lineno"> 497</span> <a class="code hl_class" href="classboost_1_1gil_1_1histogram.html">histogram&lt;boost::mp11::mp_at&lt;bin_t, boost::mp11::mp_size_t&lt;Dimensions&gt;</a>&gt;...&gt; sub_h;</div>
<div class="line"><a id="l00498" name="l00498"></a><span class="lineno"> 498</span> </div>
<div class="line"><a id="l00499" name="l00499"></a><span class="lineno"> 499</span> std::for_each(base_t::begin(), base_t::end(), [&amp;](value_t <span class="keyword">const</span>&amp; v) {</div>
<div class="line"><a id="l00500" name="l00500"></a><span class="lineno"> 500</span> <span class="keyword">auto</span> sub_key =</div>
<div class="line"><a id="l00501" name="l00501"></a><span class="lineno"> 501</span> detail::tuple_to_tuple(v.first, boost::mp11::index_sequence&lt;Dimensions...&gt;{});</div>
<div class="line"><a id="l00502" name="l00502"></a><span class="lineno"> 502</span> sub_h[sub_key] += base_t::operator[](v.first);</div>
<div class="line"><a id="l00503" name="l00503"></a><span class="lineno"> 503</span> });</div>
<div class="line"><a id="l00504" name="l00504"></a><span class="lineno"> 504</span> <span class="keywordflow">return</span> sub_h;</div>
<div class="line"><a id="l00505" name="l00505"></a><span class="lineno"> 505</span> }</div>
</div>
<div class="line"><a id="l00506" name="l00506"></a><span class="lineno"> 506</span> </div>
<div class="foldopen" id="foldopen00508" data-start="{" data-end="}">
<div class="line"><a id="l00508" name="l00508"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#acd0de676568888d848beb97dcc53ae47"> 508</a></span> <span class="keywordtype">void</span> <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#acd0de676568888d848beb97dcc53ae47">normalize</a>()</div>
<div class="line"><a id="l00509" name="l00509"></a><span class="lineno"> 509</span> {</div>
<div class="line"><a id="l00510" name="l00510"></a><span class="lineno"> 510</span> <span class="keywordtype">double</span> sum = 0.0;</div>
<div class="line"><a id="l00511" name="l00511"></a><span class="lineno"> 511</span> std::for_each(base_t::begin(), base_t::end(), [&amp;](value_t <span class="keyword">const</span>&amp; v) {</div>
<div class="line"><a id="l00512" name="l00512"></a><span class="lineno"> 512</span> sum += v.second;</div>
<div class="line"><a id="l00513" name="l00513"></a><span class="lineno"> 513</span> });</div>
<div class="line"><a id="l00514" name="l00514"></a><span class="lineno"> 514</span> <span class="comment">// std::cout&lt;&lt;(long int)sum&lt;&lt;&quot;asfe&quot;;</span></div>
<div class="line"><a id="l00515" name="l00515"></a><span class="lineno"> 515</span> std::for_each(base_t::begin(), base_t::end(), [&amp;](value_t <span class="keyword">const</span>&amp; v) {</div>
<div class="line"><a id="l00516" name="l00516"></a><span class="lineno"> 516</span> base_t::operator[](v.first) = v.second / sum;</div>
<div class="line"><a id="l00517" name="l00517"></a><span class="lineno"> 517</span> });</div>
<div class="line"><a id="l00518" name="l00518"></a><span class="lineno"> 518</span> }</div>
</div>
<div class="line"><a id="l00519" name="l00519"></a><span class="lineno"> 519</span> </div>
<div class="foldopen" id="foldopen00521" data-start="{" data-end="}">
<div class="line"><a id="l00521" name="l00521"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#af31d07521e522dfbd377eebf1652053f"> 521</a></span> <span class="keywordtype">double</span> <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#af31d07521e522dfbd377eebf1652053f">sum</a>()<span class="keyword"> const</span></div>
<div class="line"><a id="l00522" name="l00522"></a><span class="lineno"> 522</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00523" name="l00523"></a><span class="lineno"> 523</span> <span class="keywordtype">double</span> sum = 0.0;</div>
<div class="line"><a id="l00524" name="l00524"></a><span class="lineno"> 524</span> std::for_each(base_t::begin(), base_t::end(), [&amp;](value_t <span class="keyword">const</span>&amp; v) {</div>
<div class="line"><a id="l00525" name="l00525"></a><span class="lineno"> 525</span> sum += v.second;</div>
<div class="line"><a id="l00526" name="l00526"></a><span class="lineno"> 526</span> });</div>
<div class="line"><a id="l00527" name="l00527"></a><span class="lineno"> 527</span> <span class="keywordflow">return</span> sum;</div>
<div class="line"><a id="l00528" name="l00528"></a><span class="lineno"> 528</span> }</div>
</div>
<div class="line"><a id="l00529" name="l00529"></a><span class="lineno"> 529</span> </div>
<div class="foldopen" id="foldopen00531" data-start="{" data-end="}">
<div class="line"><a id="l00531" name="l00531"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#a69855316534ac65806a71253ac424688"> 531</a></span> key_t <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#a69855316534ac65806a71253ac424688">min_key</a>()<span class="keyword"> const</span></div>
<div class="line"><a id="l00532" name="l00532"></a><span class="lineno"> 532</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00533" name="l00533"></a><span class="lineno"> 533</span> key_t min_key = base_t::begin()-&gt;first;</div>
<div class="line"><a id="l00534" name="l00534"></a><span class="lineno"> 534</span> std::for_each(base_t::begin(), base_t::end(), [&amp;](value_t <span class="keyword">const</span>&amp; v) {</div>
<div class="line"><a id="l00535" name="l00535"></a><span class="lineno"> 535</span> <span class="keywordflow">if</span> (v.first &lt; min_key)</div>
<div class="line"><a id="l00536" name="l00536"></a><span class="lineno"> 536</span> min_key = v.first;</div>
<div class="line"><a id="l00537" name="l00537"></a><span class="lineno"> 537</span> });</div>
<div class="line"><a id="l00538" name="l00538"></a><span class="lineno"> 538</span> <span class="keywordflow">return</span> min_key;</div>
<div class="line"><a id="l00539" name="l00539"></a><span class="lineno"> 539</span> }</div>
</div>
<div class="line"><a id="l00540" name="l00540"></a><span class="lineno"> 540</span> </div>
<div class="foldopen" id="foldopen00542" data-start="{" data-end="}">
<div class="line"><a id="l00542" name="l00542"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#af6c108814c2d6da6d55b18dbb4d51f4e"> 542</a></span> key_t <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#af6c108814c2d6da6d55b18dbb4d51f4e">max_key</a>()<span class="keyword"> const</span></div>
<div class="line"><a id="l00543" name="l00543"></a><span class="lineno"> 543</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00544" name="l00544"></a><span class="lineno"> 544</span> key_t max_key = base_t::begin()-&gt;first;</div>
<div class="line"><a id="l00545" name="l00545"></a><span class="lineno"> 545</span> std::for_each(base_t::begin(), base_t::end(), [&amp;](value_t <span class="keyword">const</span>&amp; v) {</div>
<div class="line"><a id="l00546" name="l00546"></a><span class="lineno"> 546</span> <span class="keywordflow">if</span> (v.first &gt; max_key)</div>
<div class="line"><a id="l00547" name="l00547"></a><span class="lineno"> 547</span> max_key = v.first;</div>
<div class="line"><a id="l00548" name="l00548"></a><span class="lineno"> 548</span> });</div>
<div class="line"><a id="l00549" name="l00549"></a><span class="lineno"> 549</span> <span class="keywordflow">return</span> max_key;</div>
<div class="line"><a id="l00550" name="l00550"></a><span class="lineno"> 550</span> }</div>
</div>
<div class="line"><a id="l00551" name="l00551"></a><span class="lineno"> 551</span> </div>
<div class="foldopen" id="foldopen00553" data-start="{" data-end="}">
<div class="line"><a id="l00553" name="l00553"></a><span class="lineno"><a class="line" href="classboost_1_1gil_1_1histogram.html#aba27a7660c6da9bcf9d7cb8c7de996e4"> 553</a></span> std::vector&lt;key_t&gt; <a class="code hl_function" href="classboost_1_1gil_1_1histogram.html#aba27a7660c6da9bcf9d7cb8c7de996e4">sorted_keys</a>()<span class="keyword"> const</span></div>
<div class="line"><a id="l00554" name="l00554"></a><span class="lineno"> 554</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00555" name="l00555"></a><span class="lineno"> 555</span> std::vector&lt;key_t&gt; sorted_keys;</div>
<div class="line"><a id="l00556" name="l00556"></a><span class="lineno"> 556</span> std::for_each(base_t::begin(), base_t::end(), [&amp;](value_t <span class="keyword">const</span>&amp; v) {</div>
<div class="line"><a id="l00557" name="l00557"></a><span class="lineno"> 557</span> sorted_keys.push_back(v.first);</div>
<div class="line"><a id="l00558" name="l00558"></a><span class="lineno"> 558</span> });</div>
<div class="line"><a id="l00559" name="l00559"></a><span class="lineno"> 559</span> std::sort(sorted_keys.begin(), sorted_keys.end());</div>
<div class="line"><a id="l00560" name="l00560"></a><span class="lineno"> 560</span> <span class="keywordflow">return</span> sorted_keys;</div>
<div class="line"><a id="l00561" name="l00561"></a><span class="lineno"> 561</span> }</div>
</div>
<div class="line"><a id="l00562" name="l00562"></a><span class="lineno"> 562</span> </div>
<div class="line"><a id="l00563" name="l00563"></a><span class="lineno"> 563</span><span class="keyword">private</span>:</div>
<div class="line"><a id="l00564" name="l00564"></a><span class="lineno"> 564</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Tuple, std::size_t... I&gt;</div>
<div class="line"><a id="l00565" name="l00565"></a><span class="lineno"> 565</span> key_t make_histogram_key(Tuple <span class="keyword">const</span>&amp; t, boost::mp11::index_sequence&lt;I...&gt;)<span class="keyword"> const</span></div>
<div class="line"><a id="l00566" name="l00566"></a><span class="lineno"> 566</span><span class="keyword"> </span>{</div>
<div class="line"><a id="l00567" name="l00567"></a><span class="lineno"> 567</span> <span class="keywordflow">return</span> std::make_tuple(</div>
<div class="line"><a id="l00568" name="l00568"></a><span class="lineno"> 568</span> <span class="keyword">static_cast&lt;</span>typename boost::mp11::mp_at&lt;bin_t, boost::mp11::mp_size_t&lt;I&gt;<span class="keyword">&gt;</span>&gt;(</div>
<div class="line"><a id="l00569" name="l00569"></a><span class="lineno"> 569</span> std::get&lt;I&gt;(t))...);</div>
<div class="line"><a id="l00570" name="l00570"></a><span class="lineno"> 570</span> }</div>
<div class="line"><a id="l00571" name="l00571"></a><span class="lineno"> 571</span> </div>
<div class="line"><a id="l00572" name="l00572"></a><span class="lineno"> 572</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Tuple, std::size_t... I&gt;</div>
<div class="line"><a id="l00573" name="l00573"></a><span class="lineno"> 573</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> is_tuple_type_compatible(boost::mp11::index_sequence&lt;I...&gt;)</div>
<div class="line"><a id="l00574" name="l00574"></a><span class="lineno"> 574</span> {</div>
<div class="line"><a id="l00575" name="l00575"></a><span class="lineno"> 575</span> <span class="keyword">using </span>tp = boost::mp11::mp_list</div>
<div class="line"><a id="l00576" name="l00576"></a><span class="lineno"> 576</span> &lt;</div>
<div class="line"><a id="l00577" name="l00577"></a><span class="lineno"> 577</span> <span class="keyword">typename</span> std::is_convertible</div>
<div class="line"><a id="l00578" name="l00578"></a><span class="lineno"> 578</span> &lt;</div>
<div class="line"><a id="l00579" name="l00579"></a><span class="lineno"> 579</span> boost::mp11::mp_at&lt;bin_t, boost::mp11::mp_size_t&lt;I&gt;&gt;,</div>
<div class="line"><a id="l00580" name="l00580"></a><span class="lineno"> 580</span> <span class="keyword">typename</span> std::tuple_element&lt;I, Tuple&gt;::type</div>
<div class="line"><a id="l00581" name="l00581"></a><span class="lineno"> 581</span> &gt;::type...</div>
<div class="line"><a id="l00582" name="l00582"></a><span class="lineno"> 582</span> &gt;;</div>
<div class="line"><a id="l00583" name="l00583"></a><span class="lineno"> 583</span> <span class="keywordflow">return</span> boost::mp11::mp_all_of&lt;tp, boost::mp11::mp_to_bool&gt;::value;</div>
<div class="line"><a id="l00584" name="l00584"></a><span class="lineno"> 584</span> }</div>
<div class="line"><a id="l00585" name="l00585"></a><span class="lineno"> 585</span> </div>
<div class="line"><a id="l00586" name="l00586"></a><span class="lineno"> 586</span> <span class="keyword">template</span> &lt;<span class="keyword">typename</span> Tuple&gt;</div>
<div class="line"><a id="l00587" name="l00587"></a><span class="lineno"> 587</span> <span class="keyword">static</span> <span class="keyword">constexpr</span> <span class="keywordtype">bool</span> is_tuple_size_compatible()</div>
<div class="line"><a id="l00588" name="l00588"></a><span class="lineno"> 588</span> {</div>
<div class="line"><a id="l00589" name="l00589"></a><span class="lineno"> 589</span> <span class="keywordflow">return</span> (std::tuple_size&lt;Tuple&gt;::value == dimension());</div>
<div class="line"><a id="l00590" name="l00590"></a><span class="lineno"> 590</span> }</div>
<div class="line"><a id="l00591" name="l00591"></a><span class="lineno"> 591</span>};</div>
</div>
<div class="line"><a id="l00592" name="l00592"></a><span class="lineno"> 592</span> </div>
<div class="line"><a id="l00607" name="l00607"></a><span class="lineno"> 607</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> SrcView, <span class="keyword">typename</span> Container&gt;</div>
<div class="line"><a id="l00608" name="l00608"></a><span class="lineno"> 608</span><span class="keywordtype">void</span> fill_histogram(SrcView <span class="keyword">const</span>&amp;, Container&amp;);</div>
<div class="line"><a id="l00609" name="l00609"></a><span class="lineno"> 609</span> </div>
<div class="line"><a id="l00631" name="l00631"></a><span class="lineno"> 631</span><span class="keyword">template</span> &lt;std::size_t... Dimensions, <span class="keyword">typename</span> SrcView, <span class="keyword">typename</span>... T&gt;</div>
<div class="line"><a id="l00632" name="l00632"></a><span class="lineno"> 632</span><span class="keywordtype">void</span> fill_histogram(</div>
<div class="line"><a id="l00633" name="l00633"></a><span class="lineno"> 633</span> SrcView <span class="keyword">const</span>&amp; srcview,</div>
<div class="line"><a id="l00634" name="l00634"></a><span class="lineno"> 634</span> histogram&lt;T...&gt;&amp; hist,</div>
<div class="line"><a id="l00635" name="l00635"></a><span class="lineno"> 635</span> std::size_t bin_width = 1,</div>
<div class="line"><a id="l00636" name="l00636"></a><span class="lineno"> 636</span> <span class="keywordtype">bool</span> accumulate = <span class="keyword">false</span>,</div>
<div class="line"><a id="l00637" name="l00637"></a><span class="lineno"> 637</span> <span class="keywordtype">bool</span> sparsefill = <span class="keyword">true</span>,</div>
<div class="line"><a id="l00638" name="l00638"></a><span class="lineno"> 638</span> <span class="keywordtype">bool</span> applymask = <span class="keyword">false</span>,</div>
<div class="line"><a id="l00639" name="l00639"></a><span class="lineno"> 639</span> std::vector&lt;std::vector&lt;bool&gt;&gt; mask = {},</div>
<div class="line"><a id="l00640" name="l00640"></a><span class="lineno"> 640</span> <span class="keyword">typename</span> histogram&lt;T...&gt;::key_type lower =</div>
<div class="line"><a id="l00641" name="l00641"></a><span class="lineno"> 641</span> (detail::tuple_limit&lt;<span class="keyword">typename</span> histogram&lt;T...&gt;::key_type&gt;::min)(),</div>
<div class="line"><a id="l00642" name="l00642"></a><span class="lineno"> 642</span> <span class="keyword">typename</span> histogram&lt;T...&gt;::key_type upper =</div>
<div class="line"><a id="l00643" name="l00643"></a><span class="lineno"> 643</span> (detail::tuple_limit&lt;<span class="keyword">typename</span> histogram&lt;T...&gt;::key_type&gt;::max)(),</div>
<div class="line"><a id="l00644" name="l00644"></a><span class="lineno"> 644</span> <span class="keywordtype">bool</span> setlimits = <span class="keyword">false</span>)</div>
<div class="line"><a id="l00645" name="l00645"></a><span class="lineno"> 645</span>{</div>
<div class="line"><a id="l00646" name="l00646"></a><span class="lineno"> 646</span> <span class="keywordflow">if</span> (!accumulate)</div>
<div class="line"><a id="l00647" name="l00647"></a><span class="lineno"> 647</span> hist.clear();</div>
<div class="line"><a id="l00648" name="l00648"></a><span class="lineno"> 648</span> </div>
<div class="line"><a id="l00649" name="l00649"></a><span class="lineno"> 649</span> detail::filler&lt;histogram&lt;T...&gt;::dimension()&gt; f;</div>
<div class="line"><a id="l00650" name="l00650"></a><span class="lineno"> 650</span> <span class="keywordflow">if</span> (!sparsefill)</div>
<div class="line"><a id="l00651" name="l00651"></a><span class="lineno"> 651</span> f(hist, lower, upper, bin_width);</div>
<div class="line"><a id="l00652" name="l00652"></a><span class="lineno"> 652</span> </div>
<div class="line"><a id="l00653" name="l00653"></a><span class="lineno"> 653</span> hist.template <a class="code hl_function" href="group___s_t_l_optimizations.html#ga09a077977f139f28b04441f238ec6ab0">fill</a>&lt;Dimensions...&gt;(srcview, bin_width, applymask, mask, lower, upper, setlimits);</div>
<div class="line"><a id="l00654" name="l00654"></a><span class="lineno"> 654</span>}</div>
<div class="line"><a id="l00655" name="l00655"></a><span class="lineno"> 655</span> </div>
<div class="line"><a id="l00668" name="l00668"></a><span class="lineno"> 668</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span> Container&gt;</div>
<div class="line"><a id="l00669" name="l00669"></a><span class="lineno"> 669</span><span class="keyword">auto</span> cumulative_histogram(Container <span class="keyword">const</span>&amp;) -&gt; Container;</div>
<div class="line"><a id="l00670" name="l00670"></a><span class="lineno"> 670</span> </div>
<div class="line"><a id="l00671" name="l00671"></a><span class="lineno"> 671</span><span class="keyword">template</span> &lt;<span class="keyword">typename</span>... T&gt;</div>
<div class="line"><a id="l00672" name="l00672"></a><span class="lineno"> 672</span><span class="keyword">auto</span> cumulative_histogram(histogram&lt;T...&gt; <span class="keyword">const</span>&amp; hist) -&gt; histogram&lt;T...&gt;</div>
<div class="line"><a id="l00673" name="l00673"></a><span class="lineno"> 673</span>{</div>
<div class="line"><a id="l00674" name="l00674"></a><span class="lineno"> 674</span> <span class="keyword">using </span>check_list = boost::mp11::mp_list&lt;boost::has_less&lt;T&gt;...&gt;;</div>
<div class="line"><a id="l00675" name="l00675"></a><span class="lineno"> 675</span> <span class="keyword">static_assert</span>(</div>
<div class="line"><a id="l00676" name="l00676"></a><span class="lineno"> 676</span> boost::mp11::mp_all_of&lt;check_list, boost::mp11::mp_to_bool&gt;::value,</div>
<div class="line"><a id="l00677" name="l00677"></a><span class="lineno"> 677</span> <span class="stringliteral">&quot;Cumulative histogram not possible of this type&quot;</span>);</div>
<div class="line"><a id="l00678" name="l00678"></a><span class="lineno"> 678</span> </div>
<div class="line"><a id="l00679" name="l00679"></a><span class="lineno"> 679</span> <span class="keyword">using </span>histogram_t = histogram&lt;T...&gt;;</div>
<div class="line"><a id="l00680" name="l00680"></a><span class="lineno"> 680</span> <span class="keyword">using </span>pair_t = std::pair&lt;typename histogram_t::key_type, typename histogram_t::mapped_type&gt;;</div>
<div class="line"><a id="l00681" name="l00681"></a><span class="lineno"> 681</span> <span class="keyword">using </span>value_t = <span class="keyword">typename</span> histogram_t::value_type;</div>
<div class="line"><a id="l00682" name="l00682"></a><span class="lineno"> 682</span> </div>
<div class="line"><a id="l00683" name="l00683"></a><span class="lineno"> 683</span> histogram_t cumulative_hist;</div>
<div class="line"><a id="l00684" name="l00684"></a><span class="lineno"> 684</span> std::size_t <span class="keyword">const</span> dims = histogram_t::dimension();</div>
<div class="line"><a id="l00685" name="l00685"></a><span class="lineno"> 685</span> <span class="keywordflow">if</span> (dims == 1)</div>
<div class="line"><a id="l00686" name="l00686"></a><span class="lineno"> 686</span> {</div>
<div class="line"><a id="l00687" name="l00687"></a><span class="lineno"> 687</span> std::vector&lt;pair_t&gt; sorted_keys(hist.size());</div>
<div class="line"><a id="l00688" name="l00688"></a><span class="lineno"> 688</span> std::size_t counter = 0;</div>
<div class="line"><a id="l00689" name="l00689"></a><span class="lineno"> 689</span> std::for_each(hist.begin(), hist.end(), [&amp;](value_t <span class="keyword">const</span>&amp; v) {</div>
<div class="line"><a id="l00690" name="l00690"></a><span class="lineno"> 690</span> sorted_keys[counter++] = std::make_pair(v.first, v.second);</div>
<div class="line"><a id="l00691" name="l00691"></a><span class="lineno"> 691</span> });</div>
<div class="line"><a id="l00692" name="l00692"></a><span class="lineno"> 692</span> std::sort(sorted_keys.begin(), sorted_keys.end());</div>
<div class="line"><a id="l00693" name="l00693"></a><span class="lineno"> 693</span> <span class="keyword">auto</span> cumulative_counter = <span class="keyword">static_cast&lt;</span>typename histogram_t::mapped_type<span class="keyword">&gt;</span>(0);</div>
<div class="line"><a id="l00694" name="l00694"></a><span class="lineno"> 694</span> <span class="keywordflow">for</span> (std::size_t i = 0; i &lt; sorted_keys.size(); ++i)</div>
<div class="line"><a id="l00695" name="l00695"></a><span class="lineno"> 695</span> {</div>
<div class="line"><a id="l00696" name="l00696"></a><span class="lineno"> 696</span> cumulative_counter += sorted_keys[i].second;</div>
<div class="line"><a id="l00697" name="l00697"></a><span class="lineno"> 697</span> cumulative_hist[(sorted_keys[i].first)] = cumulative_counter;</div>
<div class="line"><a id="l00698" name="l00698"></a><span class="lineno"> 698</span> }</div>
<div class="line"><a id="l00699" name="l00699"></a><span class="lineno"> 699</span> }</div>
<div class="line"><a id="l00700" name="l00700"></a><span class="lineno"> 700</span> <span class="keywordflow">else</span></div>
<div class="line"><a id="l00701" name="l00701"></a><span class="lineno"> 701</span> {</div>
<div class="line"><a id="l00702" name="l00702"></a><span class="lineno"> 702</span> std::for_each(hist.begin(), hist.end(), [&amp;](value_t <span class="keyword">const</span>&amp; v1) {</div>
<div class="line"><a id="l00703" name="l00703"></a><span class="lineno"> 703</span> auto cumulative_counter = static_cast&lt;typename histogram_t::mapped_type&gt;(0);</div>
<div class="line"><a id="l00704" name="l00704"></a><span class="lineno"> 704</span> std::for_each(hist.begin(), hist.end(), [&amp;](value_t const&amp; v2) {</div>
<div class="line"><a id="l00705" name="l00705"></a><span class="lineno"> 705</span> bool comp = detail::tuple_compare(</div>
<div class="line"><a id="l00706" name="l00706"></a><span class="lineno"> 706</span> v2.first, v1.first,</div>
<div class="line"><a id="l00707" name="l00707"></a><span class="lineno"> 707</span> boost::mp11::make_index_sequence&lt;histogram_t::dimension()&gt;{});</div>
<div class="line"><a id="l00708" name="l00708"></a><span class="lineno"> 708</span> if (comp)</div>
<div class="line"><a id="l00709" name="l00709"></a><span class="lineno"> 709</span> cumulative_counter += hist.at(v2.first);</div>
<div class="line"><a id="l00710" name="l00710"></a><span class="lineno"> 710</span> });</div>
<div class="line"><a id="l00711" name="l00711"></a><span class="lineno"> 711</span> cumulative_hist[v1.first] = cumulative_counter;</div>
<div class="line"><a id="l00712" name="l00712"></a><span class="lineno"> 712</span> });</div>
<div class="line"><a id="l00713" name="l00713"></a><span class="lineno"> 713</span> }</div>
<div class="line"><a id="l00714" name="l00714"></a><span class="lineno"> 714</span> <span class="keywordflow">return</span> cumulative_hist;</div>
<div class="line"><a id="l00715" name="l00715"></a><span class="lineno"> 715</span>}</div>
<div class="line"><a id="l00716" name="l00716"></a><span class="lineno"> 716</span> </div>
<div class="line"><a id="l00717" name="l00717"></a><span class="lineno"> 717</span>}} <span class="comment">//namespace boost::gil</span></div>
<div class="line"><a id="l00718" name="l00718"></a><span class="lineno"> 718</span> </div>
<div class="line"><a id="l00719" name="l00719"></a><span class="lineno"> 719</span><span class="preprocessor">#endif</span></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html">boost::gil::histogram</a></div><div class="ttdoc">Default histogram class provided by boost::gil.</div><div class="ttdef"><b>Definition</b> histogram.hpp:215</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_a0852d4b6aa88a6268acabd2a927322b3"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#a0852d4b6aa88a6268acabd2a927322b3">boost::gil::histogram::sub_histogram</a></div><div class="ttdeci">histogram&lt; boost::mp11::mp_at&lt; bin_t, boost::mp11::mp_size_t&lt; Dimensions &gt; &gt;... &gt; sub_histogram()</div><div class="ttdoc">Returns a sub-histogram over specified axes.</div><div class="ttdef"><b>Definition</b> histogram.hpp:481</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_a0dae242b2c1bf16bde24c124d3097c8a"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#a0dae242b2c1bf16bde24c124d3097c8a">boost::gil::histogram::is_pixel_compatible</a></div><div class="ttdeci">static constexpr bool is_pixel_compatible()</div><div class="ttdoc">Checks if the histogram class is compatible to be used with a GIL image type.</div><div class="ttdef"><b>Definition</b> histogram.hpp:266</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_a1326d1132f56f08297dce325b4b4ff7a"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#a1326d1132f56f08297dce325b4b4ff7a">boost::gil::histogram::key_from_tuple</a></div><div class="ttdeci">key_t key_from_tuple(Tuple const &amp;t) const</div><div class="ttdoc">Returns a key compatible to be used as the histogram key from the input tuple.</div><div class="ttdef"><b>Definition</b> histogram.hpp:296</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_a449f63da7d6f11751675a95279013a98"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#a449f63da7d6f11751675a95279013a98">boost::gil::histogram::fill</a></div><div class="ttdeci">void fill(SrcView const &amp;srcview, std::size_t bin_width=1, bool applymask=false, std::vector&lt; std::vector&lt; bool &gt; &gt; mask={}, key_t lower=key_t(), key_t upper=key_t(), bool setlimits=false)</div><div class="ttdoc">Fills the histogram with the input image view.</div><div class="ttdef"><b>Definition</b> histogram.hpp:409</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_a4806809cec84980fac0a10596414e960"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#a4806809cec84980fac0a10596414e960">boost::gil::histogram::dimension</a></div><div class="ttdeci">static constexpr std::size_t dimension()</div><div class="ttdoc">Returns the number of dimensions(axes) the class supports.</div><div class="ttdef"><b>Definition</b> histogram.hpp:226</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_a51a9548281df868dbe64edf2616d025d"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#a51a9548281df868dbe64edf2616d025d">boost::gil::histogram::sub_histogram</a></div><div class="ttdeci">histogram sub_histogram(Tuple const &amp;t1, Tuple const &amp;t2)</div><div class="ttdoc">Can return a subset or a mask over the current histogram.</div><div class="ttdef"><b>Definition</b> histogram.hpp:442</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_a69855316534ac65806a71253ac424688"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#a69855316534ac65806a71253ac424688">boost::gil::histogram::min_key</a></div><div class="ttdeci">key_t min_key() const</div><div class="ttdoc">Return the minimum key in histogram.</div><div class="ttdef"><b>Definition</b> histogram.hpp:531</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_a72e5f7159495f2b7a131acc41d686c23"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#a72e5f7159495f2b7a131acc41d686c23">boost::gil::histogram::key_from_pixel</a></div><div class="ttdeci">key_t key_from_pixel(Pixel const &amp;p) const</div><div class="ttdoc">Returns a histogram compatible key from the input pixel which can be directly used.</div><div class="ttdef"><b>Definition</b> histogram.hpp:339</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_aba27a7660c6da9bcf9d7cb8c7de996e4"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#aba27a7660c6da9bcf9d7cb8c7de996e4">boost::gil::histogram::sorted_keys</a></div><div class="ttdeci">std::vector&lt; key_t &gt; sorted_keys() const</div><div class="ttdoc">Return sorted keys in a vector.</div><div class="ttdef"><b>Definition</b> histogram.hpp:553</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_ac5b0f6998ccb8ac1e5fb735acf8735b0"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#ac5b0f6998ccb8ac1e5fb735acf8735b0">boost::gil::histogram::nearest_key</a></div><div class="ttdeci">key_t nearest_key(key_t const &amp;k) const</div><div class="ttdoc">Return nearest smaller key to specified histogram key.</div><div class="ttdef"><b>Definition</b> histogram.hpp:377</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_ac97e35e325de0742709a280bc84dd3c1"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#ac97e35e325de0742709a280bc84dd3c1">boost::gil::histogram::operator()</a></div><div class="ttdeci">mapped_t &amp; operator()(T... indices)</div><div class="ttdoc">Returns bin value corresponding to specified tuple.</div><div class="ttdef"><b>Definition</b> histogram.hpp:232</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_acd0de676568888d848beb97dcc53ae47"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#acd0de676568888d848beb97dcc53ae47">boost::gil::histogram::normalize</a></div><div class="ttdeci">void normalize()</div><div class="ttdoc">Normalize this histogram class.</div><div class="ttdef"><b>Definition</b> histogram.hpp:508</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_ae4fb7132988f0d964a632b88e34347d8"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#ae4fb7132988f0d964a632b88e34347d8">boost::gil::histogram::is_tuple_compatible</a></div><div class="ttdeci">bool is_tuple_compatible(Tuple const &amp;)</div><div class="ttdoc">Checks if the histogram class is compatible to be used with the specified tuple type.</div><div class="ttdef"><b>Definition</b> histogram.hpp:275</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_af31d07521e522dfbd377eebf1652053f"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#af31d07521e522dfbd377eebf1652053f">boost::gil::histogram::sum</a></div><div class="ttdeci">double sum() const</div><div class="ttdoc">Return the sum count of all bins.</div><div class="ttdef"><b>Definition</b> histogram.hpp:521</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_af6c108814c2d6da6d55b18dbb4d51f4e"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#af6c108814c2d6da6d55b18dbb4d51f4e">boost::gil::histogram::max_key</a></div><div class="ttdeci">key_t max_key() const</div><div class="ttdoc">Return the maximum key in histogram.</div><div class="ttdef"><b>Definition</b> histogram.hpp:542</div></div>
<div class="ttc" id="aclassboost_1_1gil_1_1histogram_html_af92795152d964a6032e959435c828434"><div class="ttname"><a href="classboost_1_1gil_1_1histogram.html#af92795152d964a6032e959435c828434">boost::gil::histogram::equals</a></div><div class="ttdeci">bool equals(OtherType const &amp;otherhist) const</div><div class="ttdoc">Checks if 2 histograms are equal. Ignores type, and checks if the keys (after type casting) match.</div><div class="ttdef"><b>Definition</b> histogram.hpp:245</div></div>
<div class="ttc" id="agroup___histogram-_helpers_html_ga534f64cc944af89094e689ebcbf68452"><div class="ttname"><a href="group___histogram-_helpers.html#ga534f64cc944af89094e689ebcbf68452">boost::gil::detail::pixel_to_tuple</a></div><div class="ttdeci">auto pixel_to_tuple(Pixel const &amp;p, boost::mp11::index_sequence&lt; I... &gt;) -&gt; decltype(std::make_tuple(p[I]...))</div><div class="ttdef"><b>Definition</b> histogram.hpp:88</div></div>
<div class="ttc" id="agroup___histogram-_helpers_html_ga535069bb5106a74167c0803f3d0e9ffa"><div class="ttname"><a href="group___histogram-_helpers.html#ga535069bb5106a74167c0803f3d0e9ffa">boost::gil::detail::tuple_to_tuple</a></div><div class="ttdeci">auto tuple_to_tuple(Tuple const &amp;t, boost::mp11::index_sequence&lt; I... &gt;) -&gt; decltype(std::make_tuple(std::get&lt; I &gt;(t)...))</div><div class="ttdef"><b>Definition</b> histogram.hpp:98</div></div>
<div class="ttc" id="agroup___s_t_l_optimizations_html_ga09a077977f139f28b04441f238ec6ab0"><div class="ttname"><a href="group___s_t_l_optimizations.html#ga09a077977f139f28b04441f238ec6ab0">std::fill</a></div><div class="ttdeci">void fill(boost::gil::iterator_from_2d&lt; IL &gt; first, boost::gil::iterator_from_2d&lt; IL &gt; last, const V &amp;val)</div><div class="ttdoc">std::fill(I,I,V) with I being a iterator_from_2d</div><div class="ttdef"><b>Definition</b> algorithm.hpp:369</div></div>
<div class="ttc" id="anamespaceboost_html"><div class="ttname"><a href="namespaceboost.html">boost</a></div><div class="ttdoc">defined(BOOST_NO_CXX17_HDR_MEMORY_RESOURCE)</div><div class="ttdef"><b>Definition</b> algorithm.hpp:36</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1channel__type_html"><div class="ttname"><a href="structboost_1_1gil_1_1channel__type.html">boost::gil::channel_type</a></div><div class="ttdef"><b>Definition</b> color_convert.hpp:31</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1detail_1_1filler_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1filler.html">boost::gil::detail::filler</a></div><div class="ttdoc">Filler is used to fill the histogram class with all values between a specified range This functor is ...</div><div class="ttdef"><b>Definition</b> histogram.hpp:173</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1detail_1_1hash__tuple_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1hash__tuple.html">boost::gil::detail::hash_tuple</a></div><div class="ttdoc">Functor provided for the hashing of tuples. The following approach makes use hash_combine from boost:...</div><div class="ttdef"><b>Definition</b> histogram.hpp:75</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1detail_1_1tuple__limit_html"><div class="ttname"><a href="structboost_1_1gil_1_1detail_1_1tuple__limit.html">boost::gil::detail::tuple_limit</a></div><div class="ttdoc">Provides equivalent of std::numeric_limits for type std::tuple tuple_limit gets called with only tupl...</div><div class="ttdef"><b>Definition</b> histogram.hpp:138</div></div>
<div class="ttc" id="astructboost_1_1gil_1_1num__channels_html"><div class="ttname"><a href="structboost_1_1gil_1_1num__channels.html">boost::gil::num_channels</a></div><div class="ttdoc">Returns the number of channels of a pixel-based GIL construct.</div><div class="ttdef"><b>Definition</b> pixel.hpp:54</div></div>
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