adding noise to image

how can iadd nosie to image e.g guassian nosie religh noise exponential noise unipolar ets ... can someone help me adding nose code method and also the built in fuction in matlab for different types of noise in matlb.... adding nosie to image shold b in frequency domain

[umar siyab]

can anyone tell me about the built in function for adding noise to image like guassian reliagh exponential uniform .... if anyone know about these function please help me...

Answer 1

[Image Analyst]

Use imnoise or random or look here if you need a type that's not supplied by one of those functions: Inverse transform sampling - Wikipedia, the free encyclopedia

Or check the attached m-file for Rayleigh sampling.

[umar siyab]

sir i have seen the imnoise function and your lecture also... i didn't found the other noise modelling or the built in function for other type of noise i m new to matlab so if u give me hint or code erlang ,exponential ,uniform gamma noise it will be helpul to me.... thanks for your kind reply

[Image Analyst]

Try to adapt RANDRAW: http://www.mathworks.com/matlabcentral/fileexchange/7309-randraw