rmse evaluation of two images

Hi,

i have to correct the non uniformity of an mri image , i have used File Exxhange i have calculate rmse value it gives 404.9380

the intensity maxvalue was 2830 it becomes 255 , is it a bad value and i have to find another solution ?

Thanks

Answer 1

[Image Analyst]

You might have to dig into the program and find out what it's doing. It probably assumed a uint8 image and a max of 255. You have to find those places and make it more general so that it can handle uint16 or double images, and use intmax('uint16') or realmax('double') (depending on the class of the image being used) instead of 255.

[sbei arafet]

Hi,

i changed it into uint16 the max value becomes 4384 and rmse 335.1468

ims{colNum+1}=uint16(ones(sz(1),sz(2))*255); tts{colNum+1}='Intial Bias';

have i to multiply by another value instead of 255

[Image Analyst]

I don't know what those lines are doing. If you want ims to be all 65535 and of class uint16, then do this:

ims{colNum+1} = intmax('uint16') * ones(sz(1), sz(2), 'uint16');