avoid infinite loops when 0-area image is filtered (ticket #1295)

14 years ago · d3350b50aa
parent c3caaf3b88
commit d3350b50aa
1 changed files with 3 additions and 0 deletions
--- a/modules/imgproc/src/filter.cpp
+++ b/modules/imgproc/src/filter.cpp
@ -437,6 +437,9 @@ void FilterEngine::apply(const Mat& src, Mat& dst,
    Rect srcRoi = _srcRoi;
    if( srcRoi == Rect(0,0,-1,-1) )
        srcRoi = Rect(0,0,src.cols,src.rows);
+    
+    if( srcRoi.area() == 0 )
+        return;

    CV_Assert( dstOfs.x >= 0 && dstOfs.y >= 0 &&
        dstOfs.x + srcRoi.width <= dst.cols &&