[Greg McKaskle]

Once you have the location of the target within the image, you can do further processing on only that local area. One approach that may work is to look for something else such as the hoop or the net. Another approach would be to use tools like the edge detection or do some processing on an given column of pixels to identify the ratio of the left and right edge. I posted in another thread on a more precise technique using law of cosines to solve for the angles of the triangle between the left edge, camera, and right edge.

Greg McKaskle