压缩跟踪 是一种简单高效地基于压缩感知的跟踪算法。首先利用符合压缩感知RIP条件的随机感知矩对多尺度图像特征进行降维，然后在降维后的特征上采用简单的朴素贝叶斯分类器进行分类。该跟踪算法非常简单，但是实验结果很鲁棒，速度大概能到达40帧/秒-Compression tracking A simple and efficient tracking algorithm based on compression perception. First use of random eligible for c

PCA人脸降维，基础内容，有利于学习掌握人脸特征，减少计算量-PCA face dimension reduction, basic content, is conducive to learning and mastering facial features, reduce the amount of calculation

获取特征点后，对其进行描述。可用于降维处理。(After obtaining the feature points, it is described. It can be used to reduce dimension.)