I have this image(.png) and a'm trying to identify which box is chekced using python.I installed the omr(optical mark recognition) package https://pypi.python.org/pypi/omr/0.0.7 but it wasn't any helpful and there wasn't any documentation about OMR. So I need to know if there is any api or useful package i can use with python. here is my image: http://s7.postimg.org/uvy4cyxmz/model.png