mirror of
https://github.com/opencv/opencv.git
synced 2024-12-21 22:17:59 +08:00
a64b51dd94
Usage of imread(): magic number 0, unchecked result * docs: rewrite 0/1 to IMREAD_GRAYSCALE/IMREAD_COLOR in imread() * samples, apps: rewrite 0/1 to IMREAD_GRAYSCALE/IMREAD_COLOR in imread() * tests: rewrite 0/1 to IMREAD_GRAYSCALE/IMREAD_COLOR in imread() * doc/py_tutorials: check imread() result
32 lines
784 B
C++
32 lines
784 B
C++
#include <opencv2/imgproc.hpp>
|
|
#include <opencv2/highgui.hpp>
|
|
|
|
using namespace cv;
|
|
using namespace std;
|
|
|
|
int main(int argc, char** argv)
|
|
{
|
|
Mat src, dst, color_dst;
|
|
if( argc != 2 || !(src=imread(argv[1], IMREAD_GRAYSCALE)).data)
|
|
return -1;
|
|
|
|
Canny( src, dst, 50, 200, 3 );
|
|
cvtColor( dst, color_dst, COLOR_GRAY2BGR );
|
|
|
|
vector<Vec4i> lines;
|
|
HoughLinesP( dst, lines, 1, CV_PI/180, 80, 30, 10 );
|
|
for( size_t i = 0; i < lines.size(); i++ )
|
|
{
|
|
line( color_dst, Point(lines[i][0], lines[i][1]),
|
|
Point( lines[i][2], lines[i][3]), Scalar(0,0,255), 3, 8 );
|
|
}
|
|
namedWindow( "Source", 1 );
|
|
imshow( "Source", src );
|
|
|
|
namedWindow( "Detected Lines", 1 );
|
|
imshow( "Detected Lines", color_dst );
|
|
|
|
waitKey(0);
|
|
return 0;
|
|
}
|