Although it gave me a lot of pain and fear that I get F grade because I couldn't finished it, I finally finished it and I feel a kind of achievement.
I have made a demonstration video clip, so that you can see what I have done briefly.
You can find the source codes and download it from Google Code:
http://code.google.com/p/mysimplevideotrace
I have also tried to model a human body, but I found it is very difficult to do, because body is very rounded while a car consists of several surfaces and sharp edges. Therefore I had to give up in the middle.
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