2010. 5. 30. 01:59
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'video capture'에 해당되는 글 3건
- 2010.05.30 test: composing OpenCV Iplimage and OpenGL graphics in one window screen
- 2010.04.02 OpenCV: CV_IMAGE_ELEM
- 2010.03.13 opencv: video capturing from a camera 4
2010. 4. 2. 19:39
Computer Vision
IPLimage 이미지 행렬의 색상값 읽기
/* get reference to pixel at (col,row),
for multi-channel images (col) should be multiplied by number of channels */
#define CV_IMAGE_ELEM( image, elemtype, row, col ) \
(((elemtype*)((image)->imageData + (image)->widthStep*(row)))[(col)])
for multi-channel images (col) should be multiplied by number of channels */
#define CV_IMAGE_ELEM( image, elemtype, row, col ) \
(((elemtype*)((image)->imageData + (image)->widthStep*(row)))[(col)])
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2010. 3. 13. 01:16
Computer Vision
// Test: video capturing from a camera
#include <OpenCV/OpenCV.h> // matrix operations
int main()
{
IplImage* image = 0;
// initialize capture from a camera
CvCapture* capture = cvCaptureFromCAM(0); // capture from video device #0
cvNamedWindow("camera");
while(1) {
if ( !cvGrabFrame(capture) ){
printf("Could not grab a frame\n\7");
exit(0);
}
else {
cvGrabFrame( capture ); // capture a frame
image = cvRetrieveFrame(capture); // retrieve the caputred frame
cvShowImage( "camera", image );
if( cvWaitKey(10) >= 0 )
break;
}
}
cvReleaseCapture( &capture ); // release the capture source
cvDestroyWindow( "camera" );
return 0;
}
#include <OpenCV/OpenCV.h> // matrix operations
int main()
{
IplImage* image = 0;
// initialize capture from a camera
CvCapture* capture = cvCaptureFromCAM(0); // capture from video device #0
cvNamedWindow("camera");
while(1) {
if ( !cvGrabFrame(capture) ){
printf("Could not grab a frame\n\7");
exit(0);
}
else {
cvGrabFrame( capture ); // capture a frame
image = cvRetrieveFrame(capture); // retrieve the caputred frame
cvShowImage( "camera", image );
if( cvWaitKey(10) >= 0 )
break;
}
}
cvReleaseCapture( &capture ); // release the capture source
cvDestroyWindow( "camera" );
return 0;
}
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