中文说明：这是一个matlab工具箱包括32个降维程序，主要包括 pca，lda，MDS等十几个程序包，对于图像处理非常具有参考价值！！
English Description：
This is a matlab toolbox, including 32 dimension reduction programs, mainly including PCA, LDA, MDS and more than a dozen packages, for image processing is very valuable!!