Implemented in python. Dependencies: numpy, opencv, sklearn.
1.skin_detection_demo - Simple pixelwise skin detection using decision tree using pixels in RGB or HSV color space as features.
Data:
Skin Segmentation Data Set from https://archive.ics.uci.edu/ml/datasets/Skin+Segmentation
face.png image from http://graphics.cs.msu.ru/ru/node/899
Some results: