Disclaimer: I have no idea how much such a project might take - if from the start you think it exceeds several hours, please disregard this...
I was looking for an image viewer that would work like this for some time on the Internet and still have not found it... Is it possible that nobody copied it just for fun?
If you don't know what I'm talking about, here is the famous scene:Blade Runner Esper scene
I think the biggest challenge would be to implement voice recognition (i.e. use e.g. Windows SAPI, I don't expect anyone to code
voice recognition in a few hours!) and to use it practically (grid overlay has to be applied, defining sectors etc.).
Naturally, this is pure eye-candy - no advantage over existing viewers whatsoever. Still, the wow factor for geek friends might be pretty big (especially when used with big TV or a projector!).