how to add constant noise in image in matlab function?

how to add constant noise in image in matlab function?

Answer 1

[Jos (10584)]

See http://www.mathworks.com/matlabcentral/answers/55532-how-to-add-constant-noise-in-image

Answer 2

[UJJWAL]

There is nothing like a constant noise. If you are willing to add noise with constant statistics, you might want to explore the imnoise function in matlab.