world2dem          38 samples/cpp/tutorial_code/HighGUI/GDAL_IO/gdal-image.cpp cv::Point2d world2dem( const cv::Point2d&, const cv::Size&);
world2dem         202 samples/cpp/tutorial_code/HighGUI/GDAL_IO/gdal-image.cpp         cv::Point2d dem_coordinate = world2dem( coordinate, dem.size() );