How can I change a picture to a silhouette?

I am writing my thesis on gait but cannot convert my captured pictures to the stage I can select the points of interest for the necessary calculations. The project topic is using human gait as a security tool.

I am humbly soliciting help from colleagues who can help. Thanks in advance.

Answer 1

[Image Analyst]

Threshold it.

binaryImage = grayImage < thresholdValue;

Probably won't work in most situations. So, did you check the vision bibliography: http://www.visionbib.com/bibliography/kwic/indexg.html There are 350 papers listed there on gait. No, I don't know which one is best. I'm sure each author thinks theirs is the best. Review some of them, pick one (we can't/won't help with that), and code it up.

[Walter Roberson]

In a duplicate thread, Image Analyst wrote:

I guess the implied question here is " Where can I find algorithms to .....". So I recommend you look here: VisionBib for articles on surveillance. MATLAB Central also has demo code on (I believe) tracking using Gaussian Mixture Models for background removal.

I imagine you already have videos that you want to analyze, or can easily make one with an ordinary digital camera.

Answer 2

[Walter Roberson]

Your duplicate posts on this topic have been deleted. Do not open new Questions for the same topic.

Answer 3

[Walter Roberson]

Your new duplicate post on this topic has been deleted. Edit or respond to your existing posts rather than starting new ones.