Project Suggestion Required

We are the Under-Graduate students with our major in Computer Science And Engineering. We are keen on working on CUDA and we would like some suggestion on topics which we can undertake as our project. We want to work on some new topics which will have a wide application and acts as a solution to the problems faced today in the field of computing.Therefore we request you to provide us with ideas and suggestions.
Thank you.

A video de-ghosting filter.

Stabilization of video stream (find frame to frame shift and apply to image sequences such that they appear stable in the processed stream.