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?

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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.

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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.