Merge pull request #5759 from grundman:patch-1

modules/imgproc/src/imgwarp.cpp

@@ -3258,6 +3258,12 @@ void cv::resize( InputArray _src, OutputArray _dst, Size dsize,
     _dst.create(dsize, src.type());
     Mat dst = _dst.getMat();
 
+    if (dsize == ssize) {
+      // Source and destination are of same size. Use simple copy.
+      src.copyTo(dst);
+      return;
+    }
+
 #ifdef HAVE_TEGRA_OPTIMIZATION
     if (tegra::useTegra() && tegra::resize(src, dst, (float)inv_scale_x, (float)inv_scale_y, interpolation))
         return;