In the course Multimedia, I built an object detection system with OpenCV. OpenCV is a powerful library, that is portable among different platform.
The principle of the algorithm is finding interest points from an object image and a scene image, and then matching them from one to another. Many functions and classes are predefined in the library so that one can establish the fancy system within 150 lines of code with CLI only.
Programming of multimedia is sort of fun. There are lots of mathematics especially geometric issues needed to be concerned. It is a process of digitizing the sound, the light, even the smell. The course is also interesting.
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