Back ground subtraction techniques

How many background subtraction techniques are there???

Answer 1

[Image Analyst]

Lots. Why do you ask? The kind you use depends on the type of image you have, and what you consider to be the background. For example the "background" of a person walking across a street might be what's behind the person but the background for a snapshot of a thing in a lightbooth or an image in a fluorescent microscopy image or x-ray radiograph would all be completely different. You might use background division, background subtraction, background estimation, etc. It just depends on what you're planning on doing with the background once you have it. And like I said, how you get the background depends on the imaging situation.

[Rutvi Modi]

actually i want to detect a person from video.i get to know main 3 techniques temporal spatial and region based methods but i want more description ,their difference and code.

[Image Analyst]

Start your search here.

Also look at the examples in the Computer Vision System Toolbox