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[WM]: Problem using Mathematica for steganography



Hi There
  I am using Mathematica 5.1 for my Steganography project, which converts a image file (*.bmp) in to pixel intinsity format( as a
matrix)using RGB Color code from 0-256 range for the each color component.
  The commands i am using r 

     i=Import["imagePathName.bmp"]
     Show[i]
     InputForm[i]
        {  here the mathematica kernel populates the
entire RGB Component for the given Image       
        }

     But the problem is that the reverse process to convert the pixel intensity format into image seems not be possible to me. 
         I will be greatful if i can get any any help for this.
        thank U

Sunil Kumar.



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