In the scale of computer vision problems, the stationary camera case is relatively easy. It's not too hard to isolate moving objects from a background, it's not

In the scale of computer vision problems, the stationary camera case is relatively easy. It's not too hard to isolate moving objects from a background, it's not too hard to decide if an object is a person or not, and it's not too hard to keep track of an object once you've identified it. You would still have to handle overlapping people, scene illumination changes, etc, but these can be solved and have been done before. If you would like to play with some of this stuff, take a look at OpenCV. http://opencv.org http://opencv.org