[kabdib]

Indeed. (I have a project that needs to distinguish between cats in the dark. No kidding!)

[Raphmedia]

A pet door?

[kabdib]

Cat-specific food bowls :-)

[pov]

I was researching this a few months ago, but gave up upon the cat facial recognition. The best I could find for the raspberry pi was opencv haar filters for humans, and that was just detecting if a face was present in the video frame. I'm curious, how are you planning on doing cat facial detection for this?

[awqrre]

maybe he has a white cat and a black cat... but I would probably use RFID chips in their collar.

[kabdib]

That's what I'm trying first. RFID range is an issue, however. The electronics for this is easy, the problem is that I suck at carpentry.

The cats in question are pretty different (one black, one orange), so discrimination in visible light is easy. Not sure about IR yet.