Finger detection in human hand

Question

What i am trying to do:

I am trying to extract the fingers. I want my code to perform something similar like this. However, aim is to extract the knuckle.

Environment:

The person sitting in a typical webcam pc/laptop environment.

What have i analysed:

I've read read and understood that 1. I have to find the contours 2. Need to find convex null and convexityDefects 3. Have to draw contours Am i wrong with my understanding?

I have just tried with the code(http://docs.opencv.org/doc/tutorials/imgproc/shapedescriptors/hull/hull.html), but not getting the desired result.

Question: How to extract the fingers in computer vision using opencv?

Ofcourse, i am new to Image Processing.

Answer 1

The code and thesis paper for program from video (modified version) in you question is here:

https://www.dropbox.com/sh/t22mblcu02xf7dt/yNwsZY1aBW