findcontour_example check image empty

pull/3925/head
ttagu99 10 years ago
parent 369a3d1426
commit 3c797b0ca5
  1. 9
      samples/cpp/tutorial_code/ShapeDescriptors/findContours_demo.cpp

@ -27,8 +27,13 @@ void thresh_callback(int, void* );
*/
int main( int, char** argv )
{
/// Load source image and convert it to gray
src = imread( argv[1], 1 );
/// Load source image
src = imread(argv[1]);
if (src.empty())
{
cerr << "No image supplied ..." << endl;
return -1;
}
/// Convert image to gray and blur it
cvtColor( src, src_gray, COLOR_BGR2GRAY );

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