Human Gait Analysis ( Heel Strike )

I want to work on the heel strike of human gait. Is there any reference code or site available?

Answer 1

[Image Analyst]

Yes. Lots of papers have been published on gait analysis. See http://www.visionbib.com/bibliography/contentsmotion-f.html#Motion%20--%20Feature-Based,%20Long%20Range,%20Motion%20and%20Structure%20Estimates,%20Tracking,%20Surveillance,%20Activities, this section:

16.7.4.5 Walking, Gait Recognition, Gait Analysis
  16.7.4.5.1 Walking, Gait Recognition, University of Southampton
  16.7.4.5.2 Cyclic Motion, Periodic Motion, for Walking and Gait Recognition
  16.7.4.5.3 Human ID Using Gait, Recognition of People Through Gait
  16.7.4.5.4 Gait Analysis, Depth, 3-D Data, 3-D from Gait
  16.7.4.5.5 Gait Analysis, Diagnosis of Difference, Joint Information, Motion Capture

Find one article you like, code it up, and try it (sorry, we can't do that part for you).

[breakddcode]

I am able to detect a moving person in the video. I want to the divide the extracted silhouette into two parts, upper body and lower body, and display the silhouette in two different colour (red for upper, green for lower). How can this be done?

[Image Analyst]

If you can detect the moving person then you can determine the bounding box. And if you know the bounding box coordinates then you can certainly find the y value half way up the box. So then, just chop up your silhouette into two halves and use this code http://blogs.mathworks.com/steve/2009/02/18/image-overlay-using-transparency/ to overlay the top and bottom half over the image.