均值便宜跟踪的示例，结合PCA的尺度不变特征变换(SIFT)算法，多姿态，多角度，有不同光照,应用小区域方差对比，程序简单，主要为数据分析和统计，计算多重分形非趋势波动分析。- Example tracking mean cheap, Combined with PCA scale invariant feature transform (SIFT) algorithm, Much posture, multi-angle, have different light, Application of small area variance comparison, simple procedures, Mainly for data analysis and statistics, Calculate the multifractal trend fluctuation analysis.