I want to find lines using cvHoughLines2 function. but when I run the program there are some error like below.
root@nvidia:~/sampleCode/4_captureOpenCV# ./captureOpenCV -vt 10sad
1. Create NvMedia capture
2. Create NvMedia device
3. Create NvMedia mixer(s) and output(s) and bind them
4. Check that the device is enabled (initialized)
Query check - Output Info - Enabled:1 displayId:0 type:b302 width:480 height:272 refresh:59.940060 type:D
Used output - Output Info - Enabled:1 displayId:0 type:b302 width:480 height:272 refresh:59.940060 type:D
5. Open output file(s)
6. Create vip pool(s), queue(s), fetch threads and stream start/done semaphores
wait for ADV7182 ... one second
7. Kickoff
8. Control Thread
timeNotCount
frame= 0, time=0.000001000[s]
9. Wait for completion
frame= 1, time=0.059011000[s]
frame= 2, time=0.092225000[s]
frame= 3, time=0.125588000[s]
frame= 4, time=0.159008000[s]
frame= 5, time=0.192591000[s]
OpenCV Error: Bad argument (The source image must be 8-bit, single-channel) in cvHoughLines2, file /root2
terminate called after throwing an instance of 'cv::Exception'
what(): /root/opencv-2.4.9/modules/imgproc/src/hough.cpp:712: error: (-5) The source image must be 8-2
here is my source code.
I don't know why my program quit in short time. I set the running time at 10 sec.
//CV_HOUGH_PROBABILISTIC
CvSeq* lines = 0;
cvHoughLines2( imgOrigin, lines, CV_HOUGH_PROBABILISTIC, 1, CV_PI/180, 50, 50, 5 );
for( i = 0; i < 1; i++ )
{ CvPoint* line = (CvPoint*)cvGetSeqElem(lines,i);
cvLine( imgOrigin, line[0], line[1], CV_RGB(255,0,0), 3, 8, 0 );
}
sprintf(fileName, "captureImage/imgOrigin%d.png", i);
cvSaveImage(fileName, imgOrigin, 0);
// ---------------------------------------------------------------------
↧