Merge pull request #7601 from sovrasov:remap_big_img_assert

modules/imgproc/include/opencv2/imgproc.hpp

@@ -2286,6 +2286,8 @@ not supported by this function.
 borderMode=BORDER_TRANSPARENT, it means that the pixels in the destination image that
 corresponds to the "outliers" in the source image are not modified by the function.
 @param borderValue Value used in case of a constant border. By default, it is 0.
+@note
+Due to current implementaion limitations the size of an input and output images should be less than 32767x32767.
  */
 CV_EXPORTS_W void remap( InputArray src, OutputArray dst,
                          InputArray map1, InputArray map2,

modules/imgproc/src/imgwarp.cpp

@@ -4856,6 +4856,8 @@ void cv::remap( InputArray _src, OutputArray _dst,
     Mat src = _src.getMat(), map1 = _map1.getMat(), map2 = _map2.getMat();
     _dst.create( map1.size(), src.type() );
     Mat dst = _dst.getMat();
+    CV_Assert( dst.cols < SHRT_MAX && dst.rows < SHRT_MAX && src.cols < SHRT_MAX && src.rows < SHRT_MAX );
+
     if( dst.data == src.data )
         src = src.clone();