使用LDS(low density seperation)method 寻找最优分离面，然后对数据进行分类-Use LDS (low density seperation) method to find the optimal separation surface, and then classify the data

利用高斯混合模型（gmm）实现了目标与背景的分离以及前景的跟踪。-Gaussian mixture model (gmm) to achieve the objectives and background of the separation and the prospect of tracking.