I want to know what are the possible libraries or API's i can use.

I am creating my final year college project on cost effective optical mark up reader. I am getting problem in deciding whether java is fast enough in term of processing image data and efficient for the purpose or i need different tool or application like Matlab.

My project is actually an application which enables implementation of OMR using an ordinary scanner. The scanned image files will provide input to the software, processing...