how to generate brownian noise in an image?

Kindly someone say how to generate 2D Brownian noise to an image

Answer 1

[Image Analyst]

I guess you need to move a pixel to a new location. But if you do, some other pixel was there, so that needs to be moved. Maybe you can just map pixels to a new random location nearby but if you do that, then some pixels will be in the same new location, and other pixels won't receive any moved particles. It would be easier if you had just some particles/blobs in the image, over a background, and you just had to move the particle(s) itself and not worry about the background. Perhaps if you attach your image it would provide more insight into what you want to do.

[AMUDHA]

A actually i m trying to simulate how Brownian noise affects an image and then how to denoise it from the image

[Image Analyst]

Well what is Brownian noise in an image? I always thought it was that it was how particles moved in time. Perhaps you can use optical flow if you have multiple frames. See where the pixels moved and try to move them back.

Were you going to come up with your own original denoising algorithm, or did you merely want to implement something someone else already invented?

[AMUDHA]

Just want to implement with already invented code