对图像进行斑点噪声的添加，用方程f=f+n*f将乘性噪音添加到图像f上，其中n是均值为零，方差为var的均匀分布的随机噪声。

中值滤波器的几个主要函数,主要处理椒盐噪音以及斑点噪音，内含图片-Several major function of the median filter, dealing mainly with salt and pepper noise, and speckle noise, including picture

Digital Image Correlation (DIC) is an optical, non-contact method to measure full-field displacements and strains. The only requirement is that the test specimen has a random speckle pattern on its surface, either generated by the experimentalist (i.

处理相干斑的程序，可以借鉴和学习。经过本人编写-Speckle processing program, you can learn from. After I write