get gray values that are mapped to color LUT

Beginner Questions
1

Hi All,

I have an MRI dicom which I am reading ,it has values from 0-4096 which is mapped to color lut map.I want to get the gray values which are mapped to lut because I want to do some processing over the gray values,Is there a way to get the gray values?
-swetha

2

Have you tried simply declaring you image type as short scalars? Something like typedef itk::Image<short, 3> ImageType. What kind of result do you get if you try to read your DICOM series as this ImageType?