    // Copyright (C) 2012  Davis E. King (davis@dlib.net)
    // License: Boost Software License   See LICENSE.txt for the full license.
    #ifndef DLIB_TO_OPEN_Cv_Hh_
    #define DLIB_TO_OPEN_Cv_Hh_

    #include <opencv2/core/core.hpp>
    #include "to_open_cv_abstract.h"
    #include "../pixel.h"
    #include "../matrix/matrix.h"

    namespace dlib
    {

    // ----------------------------------------------------------------------------------------

        template <
            typename image_type
            >
        cv::Mat toMat (
            image_type& img
        )
        {
            if (image_size(img) == 0)
                return cv::Mat();

            typedef typename image_traits<image_type>::pixel_type type;
            typedef typename pixel_traits<type>::basic_pixel_type basic_pixel_type;
            if (pixel_traits<type>::num == 1)
            {
                return cv::Mat(num_rows(img), num_columns(img), cv::DataType<basic_pixel_type>::type, image_data(img), width_step(img));
            }
            else
            {
                int depth = sizeof(typename pixel_traits<type>::basic_pixel_type)*8;
                int channels = pixel_traits<type>::num;
                int thetype = CV_MAKETYPE(depth, channels);
                return cv::Mat(num_rows(img), num_columns(img), thetype, image_data(img), width_step(img));
            }
        }

    // ----------------------------------------------------------------------------------------

    }

    #endif // DLIB_TO_OPEN_Cv_Hh_