Hand detection using skin tone is the simplest way to detect hand. Problems of this method are the background should not contain skin colored, really sensitive to light and shape of background!
- Take each frame of the video
- Convert from BGR to HSV color-space (HSV, it is more easier to represent a color than RGB color-space)
- We threshold the HSV image for a range of blue color
- Now extract the blue object, we can do whatever on that image we want.