基于matlab和C以及C++集合的最优化算法，此文为最经典的powell算法，很好的程序，简洁，易懂-Based on matlab and C as well as the C++ Collection optimization algorithm, this article as the most classic powell algorithm, very good procedures, simple, easy to understand

An extension of the non local (NL) means is proposed for images damaged by Poisson noise. The proposed method is guided by the noisy image and a pre-filtered image and is adapted to the statistics of Poisson noise. The influence of both images ca