libs/gil/example/adaptive_threshold.cpp

   1 //
   2 // Copyright 2019 Miral Shah <miralshah2211@gmail.com>
   3 //
   4 // Use, modification and distribution are subject to the Boost Software License,
   5 // Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
   6 // http://www.boost.org/LICENSE_1_0.txt)
   7 //
   8 #include <boost/gil.hpp>
   9 #include <boost/gil/extension/io/png.hpp>
  10 #include <iostream>
  11
  12 using namespace boost::gil;
  13
  14 int main()
  15 {
  16     gray8_image_t img;
  17     read_image("test_adaptive.png", img, png_tag{});
  18     gray8_image_t img_out(img.dimensions());
  19
  20     boost::gil::threshold_adaptive(const_view(img), view(img_out), 11, threshold_adaptive_method::mean, threshold_direction::regular, 2);
  21     write_view("out-threshold-adaptive-mean.png", view(img_out), png_tag{});
  22
  23     boost::gil::threshold_adaptive(const_view(img), view(img_out), 11, threshold_adaptive_method::mean, threshold_direction::inverse, 2);
  24     write_view("out-threshold-adaptive-mean-inv.png", view(img_out), png_tag{});
  25
  26     boost::gil::threshold_adaptive(const_view(img), view(img_out), 7, threshold_adaptive_method::gaussian, threshold_direction::regular, 2);
  27     write_view("out-threshold-adaptive-gaussian.png", view(img_out), png_tag{});
  28
  29     boost::gil::threshold_adaptive(const_view(img), view(img_out), 11, threshold_adaptive_method::gaussian, threshold_direction::inverse, 2);
  30     write_view("out-threshold-adaptive-gaussian-inv.png", view(img_out), png_tag{});
  31
  32     return 0;
  33 }