code tracks the ball almost
-rwxr-xr-x 67 compile
drwxr-xr-x - dummy
drwxr-xr-x - hough
drwxr-xr-x - hue-limits
drwxr-xr-x - hue-thresh
drwxr-xr-x - hue
drwxr-xr-x - min-max-hue
drwxr-xr-x - morph
drwxr-xr-x - video-tracking