Maybe a skeletonization algorithm is a first step.

http://fourier.eng.hmc.edu/e161/lectures/morphology/node3.html

Try to do that in realtime, and try to identify

vertices and edges on subsequent images.

Gait is periodical, so you could apply

fourier analysis and use the coefficients

for pattern recognition.

The persons should walk before a white wallpaper.

Regards,

Joachim

I got that but Microsoft Kinect is gonna cost me around 11k INR and my budget is not that much.. any simpler and cheaper hardware which could do the same for me. Coding will not be a problem i just want to know that how can we really do it using a camera or IR camera would also do.

Btw, thanks Hiren and Joachim for your valuable reply.

Thanks a lot hiren. I was finding something related to opencv only. Thanks