C++ (Cpp) for_each_pixel Examples

Example #1

File: main.cpp Project: ticapix/cartoonizer

void increase_colour_saturation(cv::Mat &image, uchar inc) {
	cv::Mat hsv;
	cvtColor(image, hsv, CV_BGR2HSV);

	for_each_pixel(hsv, [&inc](uchar * const pixel, int /*channels*/) {
		if (pixel[1] <= 255-inc)
			pixel[1] += inc;
		else
			pixel[1] = 255;
	});

	cvtColor(hsv, image, CV_HSV2BGR);
}

Example #2

File: frame_colour_transform.hpp Project: jbytheway/subliminal

    rectangle<ptrdiff_t> operator()(In const& in, Out const& out) {
      auto const area = spatial_(in, out);

      typedef typename In::value_type InPixel;
      typedef typename Out::value_type OutPixel;
      BOOST_MPL_ASSERT_RELATION(
        boost::gil::size<OutPixel>::value,==,boost::gil::size<OutPixel>::value
      );
      for_each_pixel(
        subimage_view(out, area),
        adjust_brightness_contrast<3>(chromatic_)
      );
      return area;
    }

Example #3

File: alpha_algorithm.hpp Project: JohanAberg/Ramen

void unpremult_alpha( const RGBAView& dst) { for_each_pixel( dst, detail::alpha_unpremult_t());}