在人脸识别过程中，进行非线性特征提取，基于流形的特征提取，正交局部保持投影。-In face recognition process, non-linear feature extraction, based on the feature extraction, orthogonal submanifolds with local keep projection.

一些制作正交曲线网格的matlab源程序 不错的 很好的(Some make orthogonal curvilinear grid matlab source good very good)