Image noise detection and reduction

I am in need of an image noise detection and reduction algorithm.

[Jan]

Please specify any Matlab specific details.

[Walter Roberson]

And just any algorithm with do? If that's the case, set the entire image to a constant value and there will be no more noise. If that solution is not acceptable, then you need to be more specific about the kind of images and kind of noise that you are working with.

[Matt Fig]

Please edit the subject line! "Hello;" is not a good subject for this question.

Answer 1

[Sean de Wolski]

I'm not sure how "cool" it is, or if it's applicable to your type of noise, but a good starting place is a median filter

 doc medfilt2

Answer 2

[Walter Roberson]

Google Scholar knows about 95000 of them. here