中文说明：本算法适用于遥感图像的主成分分析，尤其针对多光谱图像以及高光谱图像均可以在MATLAB环境下实现PCA算法，尤其针对高光谱图像可以直接实现主成分分析，任意保留主成分数目，避免了使用ENVI, Arcgis等软件，可以直接嵌入于常规程序中实现一体化的遥感图像处理。
English Description：
This algorithm is suitable for principal component analysis of remote sensing image, especially for multispectral image and hyperspectral image, PCA algorithm can be realized in Matlab environment, especially for hyperspectral image, principal component analysis can be realized directly, the number of principal components can be reserved arbitrarily, and envi is avoided, ArcGIS and other software can be directly embedded in conventional programs to achieve integrated remote sensing image processing.