Any existing java or matlab library to count how many person in a room using a IP camera?

Any existing java or matlab library to

• do image su开发者_StackOverflow社区btracting with background image
• clear out the shade
• do dilate and erode to count out how many person in a room?

OpenCV will help you do what you want, and there are Java bindings for it: Java OpenCV Bindings

In MATLAB you have the Image Processing Toolbox.

Matlab has just the toolbox for this purpose. I'd highly recommend viewing Matlab's video processing webinar. There are examples of object counting:

• how many cars drove by camera placed on a highway,
• image segmentation for measuring rice grain quality.

It might be a perfect fit for you.