限制对比度自适应直方图均衡算法（CLAHE）C源代码-Restrictions contrast adaptive histogram equalization algorithm C source code

此代码实现全局均衡化和局部均衡化，局部均衡化是通过CLAHE，这个函数可以实现降噪的作用(This code realizes global equalization and local equalization, and local equalization is realized by clahe. this function can reduce noise.)