This code is based on the following journal publication Siwei Feng, Yuki Itoh, Mario Parente, and Marco F. Duarte, “Hyperspectral Band Selection from Statistical Wavelet Models”, IEEE Transactions on Geoscience and Remote Sensing, Vol. 55, No. 4, pp. 2111-2123, 2017. The main code is demo_nhmc_GMM.m. Lib-svm toolbox is used in this work.