how to calculate standared deviation of each block images

calculate standared deviation of each block of a colour image.And also display the calculated values

Answer 1

[B.k Sumedha]

I think these links will be helpfull http://www.mathworks.com/matlabcentral/answers/uploaded_files/12188/blockproc_demo1.m

http://www.mathworks.com/matlabcentral/answers/uploaded_files/12189/blockproc_demo2.m