Finding an interesting frame in a video

Question

Does anyone know of an algorithm that I could use to find an \"interesting\" representative thumbnail for a video?

I have say 30 bitmaps and I would like to choose the

Answer 1

Wow, what a great question - I guess a second step would be to iteratively remove frames where there's little or no change between it and it's successors. But all you're really doing there is reducing the set of potentially interesting frames. How exactly you determine "interestingness" is the special sauce I suppose as you don't have the user interaction statistics to rely on like Flickr does.