这是一个关于图像识别的程序，可以根据图像中的某些点，识别出图像的形状-This is a program on the image recognition, according to some point in the image, identify the shape of the image

Principal component analysis (PCA) is a popular tool for linear dimensionality reduction and feature extraction. Kernel PCA is the nonlinear form of PCA, which is promising in exposing the more complicated correlation between original high-dimensiona