[dapreja]

You should be set with openCV or JavaCV. JavaCV has more ported image/video progressing libraries than openCV and are a bit more customizable in my experience. And literally JavaCV has openCV natively but a different wrapper. I would only suggest openCV if you are working with python. It provides enough tools for basic then mid complex objects and if you want to mature in it then open up the hood. As for porting that pet porject to a mobile android device i would suggest to go straight with javaCV even though openCV has wrappers for android and java. The reason is because at some point you'll want to ditch their riggid methods of obtaining video/pictures. JavaCV has served me well when integrating with android. Also, if you eventually want to scale up the processing into a web service then it' easier.