how to integrate openCV and ARtoolkit

I need to use both openCV and ARtoolkit libraries in the same project. I'm trying to get frame by using arVideoGetImage() f开发者_运维百科unction in order to process for with openCV functions. however program throws a "System.AccessViolationException" error in the following line of face detection example: CvSeq *faces = cvHaarDetectObjects(img, cascade, storage, 1.1, 3, 0, cvSize( 40, 40 ));

ARtoolkit and openCV are work perfectly separately. Anyone has able to work these two library together, or any suggestion??

thanks

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http://www.hitl.washington.edu/artoolkit/mail-archive/message-thread-00488-Intel-OpenCV-for-ARToolK.html

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http://se.cs.ait.ac.th/cvwiki/opencv:tutorial:integrate_opencv_and_artoolkit