How can I detect basic 2D geometric shapes (e.g. square, triangle, circle) on a JPEG image?

Question

After taking a picture, I\'m trying to detect the shape of the object that is shot. What I\'m looking for is similar to face detection, except I want the app to detect shapes in

Answer 1

You might want to check out processing.org, also make your question a little less "Do this for me". http://www.processing.org has several facilities to do this. Even better is http://marvinproject.sourceforge.com which can do it in real time for video!