Kittydar – Face detection for cats • Hacker News Board

Ditto for Mac/Safari. There must be something diabolical and/or useful to do with this tech but I'm struggling to come up with a good use case other than 'because kitty'

Re: Kittydar – Face detection for cats

#5

Post by runjake » Fri, Jun 15, 2012, 4:40 PM UTC

I tried a few different photos of multiple cats. It'd always get 1 correct positive, but never more than 1 correct positive. In every image's case, it would have multiple false positives in a cat's fur patterns.

Here's one example:

http://4.bp.blogspot.com/--RBVfn6FzOI/Tq5kOxFGKEI/AAAAAAAACn...

Neat start, though. I have a particular interest in this subject as I'm entertain schemes that allow our cats into our garage while locking neighborhood cats out. I ran into similar issues with fur patterns during image processing techniques. I'll probably end up relying on a more simple solution: RFID tags attach to their collars.

Re: Kittydar – Face detection for cats

#6

Post by danso » Fri, Jun 15, 2012, 4:48 PM UTC

For the curious, the author references this Microsoft paper, "Cat Head Detection - How to Effectively Exploit Shape and Texture Features": http://research.microsoft.com/pubs/80582/ECCV_CAT_PROC.pdf

Re: Kittydar – Face detection for cats

#7

Post by Zimahl » Fri, Jun 15, 2012, 4:50 PM UTC

The test images didn't work for me (Firefox 5.0, don't ask). However, saving the test images to my desktop then dragging them in worked fine.

Re: Kittydar – Face detection for cats

#8

Post by JonWood » Fri, Jun 15, 2012, 4:53 PM UTC

runjake wrote: post #5

I tried a few different photos of multiple cats. It'd always get 1 correct positive, but never more than 1 correct positive. In every image's case, it would have multiple false positives in a cat's fur patterns. Here's one example: http://4.bp.blogspot.com/--RBVfn6FzOI/Tq5kOxFGKEI/AAAAAAAACn... Neat start, though. I have a particular interest in this subject as I'm entertain schemes that allow our cats into our garag…

Your cat may already have an RFID tag - they're used in the process of "chipping" cats so that they can be traced if they find themselves at a vet without their owner. If there is one, it'll be on the back of their neck.

Re: Kittydar – Face detection for cats

#9

Post by joejohnson » Fri, Jun 15, 2012, 5:00 PM UTC

The test image with four cats on a "Hello Kitty" rug results in only three cats being detected. The white cat on the far right has it's eyes nearly closed; maybe this is why it wasn't detected?

Re: Kittydar – Face detection for cats

#10

Post by Groxx » Fri, Jun 15, 2012, 5:02 PM UTC

Fun idea, but definitely needs more training. It even gets things wrong on the test images (sometimes spectacularly - why those leaves in particular?).