generic-library/opencv
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improved error handling

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This commit is contained in:
Adrien BAK 2013-11-11 14:55:12 +09:00
parent 8a2de2ecca
commit 514f1fae95
1 changed files with 6 additions and 1 deletions
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7
samples/cpp/tutorial_code/ImgTrans/HoughCircle_Demo.cpp
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@ -6,6 +6,7 @@
#include "opencv2/highgui/highgui.hpp" #include "opencv2/highgui/highgui.hpp"
#include "opencv2/imgproc/imgproc.hpp" #include "opencv2/imgproc/imgproc.hpp"
#include <iostream>
using namespace cv; using namespace cv;
@ -55,7 +56,11 @@ int main(int, char** argv)
src = imread( argv[1], 1 ); src = imread( argv[1], 1 );
if( !src.data ) if( !src.data )
{ return -1; } {
std::cerr<<"Invalid input image\n";
std::cout<<"Usage : tutorial_HoughCircle_Demo <path_to_input_image>\n";
return -1;
}
// Convert it to gray // Convert it to gray
cvtColor( src, src_gray, COLOR_BGR2GRAY ); cvtColor( src, src_gray, COLOR_BGR2GRAY );