diff --git a/samples/cpp/edge.cpp b/samples/cpp/edge.cpp index 3c7b8cddcb..5f18cdc229 100644 --- a/samples/cpp/edge.cpp +++ b/samples/cpp/edge.cpp @@ -6,6 +6,15 @@ using namespace cv; using namespace std; +void help() +{ + cout << + "\nDemonstrate Canny edge detection\n" + "Call:\n" + "/.edge [image_name -- Default is fruits.jpg]\n" << endl; + +} + int edgeThresh = 1; Mat image, gray, edge, cedge; @@ -29,10 +38,10 @@ int main( int argc, char** argv ) image = imread(filename, 1); if(image.empty()) { - cout << "Usage: edge " << endl; + help(); return -1; } - + help(); cedge.create(image.size(), image.type()); cvtColor(image, gray, CV_BGR2GRAY);