Unsharpen an image - used to sharpen an image. Sharpening emphasizes texture and detail, and is critical when post-processing most digital images. An unsharp mask cannot create additional detail, but it can greatly enhance the appearance of d

create a mask in an image matlab function-create a mask in an image matlab function..

Add Gaussian white noise (mean=0 and variance=0.05 ) to the image using imnoise command. Now use fftshift command to put all zero frequencies in the middle. Low-pass filter this function by applying a mask saving only the central Fourier coeffi

生成一个掩模，用于图像处理，亲测可用，放心下载。(Create a mask, for image processing, pro - Measurement available, easy to download.)