Regarding the replacement of matrix elements

Sir,

I have an image matrix with 80x1024 conatin with DN numbers 0 to 255, i.e. 8 bit image. Now i want to replace the 8 bit numbers with 11 bit corresponding numbers. 11 bit corresponding values are given in a 1x256 matrics. Now i need to replace all the 8 bit values in the image with the given 11 bit values. how may i replace it.

Answer 1

[Walter Roberson]

DN = sort(randi([0 255],80,1024,'uint8'));
imshow(DN)

Lookup_Table = randperm(2048,256)-1;

TranslatedImage = Lookup_Table(double(DN)+1);
size(TranslatedImage)

ans = 1×2

80 1024

imshow(TranslatedImage, [])

[jyotirmoy kalita]

Thank you so much walter .....the code is working filne