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gil/example/adaptive_threshold.cpp
Mateusz Łoskot 348fd6942e Include <boost/gil.hpp> in examples (#355)
A typical user is supposed to include the main header and
to not know the library enough to include headers selectively.
2019-07-29 20:49:32 +02:00

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C++

//
// Copyright 2019 Miral Shah <miralshah2211@gmail.com>
//
// Use, modification and distribution are subject to the Boost Software License,
// Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt)
//
#include <boost/gil.hpp>
#include <boost/gil/extension/io/png.hpp>
using namespace boost::gil;
int main()
{
gray8_image_t img;
read_image("test_adaptive.png", img, png_tag{});
gray8_image_t img_out(img.dimensions());
// performing binary threshold on each channel of the image
// if the pixel value is more than 150 than it will be set to 255 else to 0
boost::gil::threshold_adaptive(const_view(img), view(img_out), 11);
write_view("out-threshold-adaptive.png", view(img_out), png_tag{});
// if the pixel value is more than 150 than it will be set to 150 else no change
boost::gil::threshold_adaptive(const_view(img), view(img_out), 11, threshold_adaptive_method::mean, threshold_direction::inverse);
write_view("out-threshold-adaptive-inv.png", view(img_out), png_tag{});
return 0;
}