libs/gil/example/convolve2d.cpp

   1 #include <vector>
   2 #include <iostream>
   3 #include <boost/gil/extension/numeric/kernel.hpp>
   4 #include <boost/gil/extension/numeric/convolve.hpp>
   5 #include <boost/gil/extension/io/png.hpp>
   6
   7 #include <boost/gil/extension/io/jpeg.hpp>
   8 using namespace boost::gil;
   9 using namespace std;
  10 int main()
  11 {
  12     //gray8_image_t img;
  13     //read_image("test_adaptive.png", img, png_tag{});
  14     //gray8_image_t img_out(img.dimensions());
  15
  16     gray8_image_t img;
  17     read_image("src_view.png", img, png_tag{});
  18     gray8_image_t img_out(img.dimensions()), img_out1(img.dimensions());
  19
  20     std::vector<float> v(9, 1.0f / 9.0f);
  21     detail::kernel_2d<float> kernel(v.begin(), v.size(), 1, 1);
  22     detail::convolve_2d(view(img), kernel, view(img_out1));
  23
  24     //write_view("out-convolve2d.png", view(img_out), png_tag{});
  25     write_view("out-convolve2d.png", view(img_out1), jpeg_tag{});
  26
  27
  28     //------------------------------------//
  29     std::vector<float> v1(3, 1.0f / 3.0f);
  30     kernel_1d<float> kernel1(v1.begin(), v1.size(), 1);
  31
  32     detail::convolve_1d<gray32f_pixel_t>(const_view(img), kernel1, view(img_out), boundary_option::extend_zero);
  33     write_view("out-convolve_option_extend_zero.png", view(img_out), png_tag{});
  34
  35     if (equal_pixels(view(img_out1), view(img_out)))cout << "convolve_option_extend_zero" << endl;
  36
  37     cout << "done\n";
  38     cin.get();
  39
  40     return 0;
  41 }