denoise image with better quality

http://www.mathworks.in/matlabcentral/answers/57219-noise-removal-by-setting-a-threshold

in above link,in noise removal code if i add randn noise instead of salt& pepper noise,then filter image is not accurate ,

so please suggest me to denoise image with better quality

[Image Analyst]

Isn't this just a total duplicate of your prior post? What's different, such that you're asking again?

[vipul utsav]

yes, you are right. but I feel that some small changes are needed in that code,so I repeat with your code.