Hey,

Ok, so I have a given video source (for the sake of the example, it is a camera). It does not have optical zoom, but we supply digital zoom instead. Now this digital zoom is pretty simple, simply cropping the image to a specified portion, and filling the screen with that portion.

The problem is that the zoomed video can have pretty rubbish quality when the digital zoom is enabled.

I am wondering if anyone knows of an approach by which a higher quality of digital zoom can be achieved in real-time.

The software is on Windows, and the video is rendered using DirectShow, but it isn't a platform solution I'm necessarily after, more just a better approach to the problem.

Cheers