matlab的噪声模型，在原有噪声模型的基础上作出了一些改进。-matlab noise model, noise model on the basis of the original made some improvements.

matlab图像处理中中加入椒盐噪声的源代码。-add salt and pepper noise matlab source code.

Depending on TYPE, you can specify additional parameters to IMNOISE. All numerical parameters are normalized; they correspond to operations with images with intensities ranging from 0 to 1.

J = imnoise(I,'localvar',IMAGE_INTENSITY,VAR) adds zero-mean, Gaussian noise to an image, I, where the local variance of the noise is a function of the image intensity values in I. IMAGE_INTENSITY and VAR are vectors of the same size, and P