- #include <cv.h>
- #include <highgui.h>
- int main (int argc, char **argv)
- {
- CvCapture* capture = 0;
- capture = cvCaptureFromCAM( CV_CAP_ANY );
- int i;
- int corner_count = 1000;
- CvTermCriteria criteria;
- criteria = cvTermCriteria (CV_TERMCRIT_ITER | CV_TERMCRIT_EPS, 64, 0.01);
- IplImage *src_img1;
- IplImage *src_img2;
- IplImage *dst_img;
- IplImage *pre_img;
- IplImage *eig_img;
- IplImage *temp_img;
- IplImage *prev_pyramid;
- IplImage *curr_pyramid;
- CvPoint2D32f *corners1;
- CvPoint2D32f *corners2;
- corners1 = (CvPoint2D32f *) cvAlloc (corner_count * sizeof (CvPoint2D32f));
- corners2 = (CvPoint2D32f *) cvAlloc (corner_count * sizeof (CvPoint2D32f));
- cvNamedWindow ("Image", 1);
- char *status;
- status = (char *) cvAlloc (corner_count);
- while (1)
- {
- pre_img = cvQueryFrame(capture);
- CvSize img_sz = cvGetSize(pre_img);
- src_img1 = cvCreateImage(img_sz, IPL_DEPTH_8U, 1);
- cvCvtColor(pre_img, src_img1, CV_RGB2GRAY);
- dst_img = cvQueryFrame(capture);
- src_img2 = cvCreateImage(img_sz, IPL_DEPTH_8U, 1);
- cvCvtColor(dst_img, src_img2, CV_RGB2GRAY);
- eig_img = cvCreateImage (img_sz, IPL_DEPTH_32F, 1);
- temp_img = cvCreateImage (img_sz, IPL_DEPTH_32F, 1);
- prev_pyramid = cvCreateImage (cvSize (src_img1->width + 8, src_img1->height / 3), IPL_DEPTH_8U, 1);
- curr_pyramid = cvCreateImage (cvSize (src_img1->width + 8, src_img1->height / 3), IPL_DEPTH_8U, 1);
- cvGoodFeaturesToTrack (src_img1, eig_img, temp_img, corners1, &corner_count, 0.001, 5, NULL);
- cvCalcOpticalFlowPyrLK (src_img1, src_img2, prev_pyramid, curr_pyramid,
- corners1, corners2, corner_count, cvSize (10, 10), 4, status, NULL, criteria, 0);
- for (i = 0; i < corner_count; i++)
- {
- if (status[i])
- cvLine (dst_img, cvPointFrom32f (corners1[i]), cvPointFrom32f (corners2[i]), CV_RGB (255, 0, 0), 1, CV_AA, 0);
- }
- cvShowImage ("Image", dst_img);
- cvWaitKey (1);
- cvReleaseImage (&src_img1);
- cvReleaseImage (&src_img2);
- cvReleaseImage (&eig_img);
- cvReleaseImage (&temp_img);
- cvReleaseImage (&prev_pyramid);
- cvReleaseImage (&curr_pyramid);
- }
- cvDestroyWindow ("Image");
- cvReleaseImage (&dst_img);
- cvReleaseImage(&pre_img);
- return 0;
- }
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