一个实时的2维人体检测跟踪算法，是opencv源码里参考的文章之一。内容包括表面模型建立，新目标检测以及匹配的问题。-A Real-Time System for Detecting and

Tracking People in 2D, is one of the references in opencv, including the appearance model, new object detect and how to find the corresponding one.