And a new mean-median mixture filter is putted forward . it use of two stage filter ,the experiment result display that it can denoise well and keep more details.

• 在此基础上，本文设计了一种均值中值混合滤波器。它采用快速中值滤波和均值滤波进行分阶段滤波 ，既有效的去除了噪声同时较好的保护了细节边缘。