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3e729e5dae
A new histogram class proposed with close suport for gil image constructs. Shift the stl support implmentation to extension to serve as example for overloading fill_histogram. Add cumulative histogram and histogram normalization. Co-authored-by: debabrata1 <debabrata@goodhealthapp.com>
55 lines
1.1 KiB
C++
55 lines
1.1 KiB
C++
//
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// Copyright 2020 Debabrata Mandal <mandaldebabrata123@gmail.com>
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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#include <boost/gil/histogram.hpp>
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#include <boost/core/lightweight_test.hpp>
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namespace gil = boost::gil;
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void check_cumulative()
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{
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gil::histogram<int> h1;
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for (int i = 0; i < 8; i++)
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{
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h1(i) = 1;
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}
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auto h2 = cumulative_histogram(h1);
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bool check1 = true;
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for (int i = 0; i < 8; i++)
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{
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if(h2(i) != i+1)
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check1 = false;
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}
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BOOST_TEST(check1);
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gil::histogram<int , int> h3;
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h3(1, 3) = 1;
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h3(1, 4) = 2;
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h3(2, 1) = 3;
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h3(2, 2) = 1;
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h3(2, 5) = 2;
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h3(3, 2) = 3;
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h3(3, 9) = 1;
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auto h4 = cumulative_histogram(h3);
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BOOST_TEST(h4(1, 3) == 1);
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BOOST_TEST(h4(1, 4) == 3);
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BOOST_TEST(h4(2, 1) == 3);
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BOOST_TEST(h4(2, 2) == 4);
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BOOST_TEST(h4(2, 5) == 9);
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BOOST_TEST(h4(3, 2) == 7);
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BOOST_TEST(h4(3, 9) == 13);
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}
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int main() {
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check_cumulative();
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return boost::report_errors();
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}
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