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I am not familiar with the processing software, but please, follow the next guide. It goes step by step through getting OpenCV to work with processing.

http://andybest.net/2009/02/processing-opencv-tutorial-1/

However it seems this is not done with the original openCV code, but by a port made by a guy named Peter Kirn. Basically this means that this is not the correct place to address your problems.