Code to run the Non-negative Matrix Factorization algorithm as presented in the Lee, Seung 1999 Nature paper.

对整数进行因数分解，输入整数，输出因数分解-Factorization of the integers

a new mathematical and algorithmic framework for unsupervised image segmentation, which is a critical step in a wide variety of image processing applications. We have found that most existing segmentation methods are not successful on histopa