GIL - 色空間の変換 - lab.comp@wiki

#include <boost/gil/gil_all.hpp>
using namespace boost::gil;
 
int main()
{
    rgb8_image_t img( 100, 100 );
 
    const color_converted_view_type<rgb8_view_t, gray8_pixel_t>::type img_gray_view
        = color_converted_view<gray8_pixel_t>( view( img ) );
 
    gray8_image_t img_gray( img.dimensions() );
    copy_pixels( color_converted_view<gray8_pixel_t>( view( img ) ), view( img_gray ) );
}