OPENCV写的一个小程序 包括将彩色图片转成灰度图以及做阈值分割和主成分分析的功能-OPENCV write a small program, including a color picture converted to grayscale and make thresholding and principal component analysis of functional

利用OpenCV库函数实现PCA（主成成分分析）算法，该算法是经典人脸识别算法Eigenface里的核心算法。-Use OpenCV library functions achieve PCA (Principal Component Analysis into) algorithm, which is a classic face recognition algorithm Eigenface in core algorithm.