基于pca降维的特征不变特性变换方法（sift），希望对研究特征提取的朋友有帮助！-PCA dimensionality reduction based on the characteristics of the same characteristics of transformation method (sift), hope that the study of feature extraction has to help a fri

一种特征描述算子，功能和sift类似，但比sift速度更快，有重要的研究价值-A characterization of operators, functions and sift similar, but faster than sift, has important research value

SIFT算法、SURF算法和PCA—SIFT算法的实例，里面要安装OPENCV才能用的-SIFT algorithm, SURF algorithm and PCA-SIFT algorithm instance, which can be used to install OPENCV

algoritmo pca, en matlab si funciona