修复原理：利用坏点周围有效值的均值赋予坏点，窗口大小可选。 本人改进此补丁使用了分块处理技术，对于输入数据大小没有限制。(Repair Principle: the use of mean effective value given around the dead dead, the window size is optional. I used a block processing technique to improve this patch, and there is no limit