Robust Hand Detection via Computer Vision

Question

I am currently working on a system for robust hand detection.

The first step is to take a photo of the hand (in HSV color space) with the hand placed in a small rect

Answer 1

It will be hard for you to find skin tone based on color only.
First of all, it depends strongly on the automatic white balance algorithm. For example, in this image, any person can see that the color is skin tone. But for the computer it will be blue.

Second, correct color calibration in digital cameras is a hard thing, and it will be rarely accurate enough for your purposes.
You can see www.DPReview.com, to understand what I mean.

In conclusion, I truly believe that the color by itself can be an input, but it is not enough.