OpenCV error when tried to use cv SURF about javacv HOT 2 CLOSED

This means the image type needs to be CV_8UC1. To load the file lily.jpg this 
way,
you can call cvLoadImage("lily.jpg", 0) instead. The 
acquireRoiFromObjectFinder()
method of the TrackingWorker class in ProCamTracker contains a simple example:
http://code.google.com/p/javacv/source/browse/trunk/procamtracker/src/name/audet
/samuel/procamtracker/TrackingWorker.java#295

Samuel

Thanks a lot for the prompt response. I tried with cvLoadImage("lily.jpg", 0) 
and it
worked. I'll take a look at your sample code to get more detail information. 
Thanks
again for the great work.