OpenCV

Operating System

Mac OS X v10.5.7

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Installation

1. First of all, install  macports
2. Next, install the following packages...
   • opencv
   • cmake
   • isightcapture
   • playerstage-stage
   • playerstage-player
3. Test the camera...

   % isightcapture /tmp/test.png
   

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Camera/OpenCV Integration

// Take from...
//   Gray Bradski and Adrian Kaelher, "Learning OpenCV: Computer Vision
//   with the OpenCV Library", O'Reilly Media Inc., 2008.
//   ISBN: 978-0-596-51613-0
//   Example 2-9, p. 27

#include <opencv/highgui.h>
#include <cvblob.h>

int main(int argc, char** argv) {
  IplImage *frame; 
  
  CvBlobs blobs;
  
  cvNamedWindow("BenderCam", CV_WINDOW_AUTOSIZE);
  CvCapture *capture;
  if (argc == 1) capture = cvCreateCameraCapture(0);
  else capture = cvCreateFileCapture(argv[1]);
  assert(capture != NULL);
  
  while(1) {
    frame = cvQueryFrame(capture);
    
    if( !frame ) break;
    cvShowImage("BenderCam", frame);
    char c = cvWaitKey(10);
    if(c == 27) break;
  } 
  cvReleaseCapture(&capture);
  cvDestroyWindow("BenderCam");
  
  return 0;
} 

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Proof-of-Concept Code

Blob Detection and Tracking

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References

•  OpenCV
•  cvBlob