MATLAB: Converting floating point value to integer

image processing

I have an image in floating point value,i have to convert it into integer ,can anyone suggest an idea please
I have values for example ,i have taken some pixels from my image,and my whole image pixels values in these ranges only,now i want to convert this floating point into an integer value and i want to read image from those intteger value pixels
   0.0004    0.0004    0.0004    0.0003    0.0003    0.0002
   0.0006    0.0005    0.0005    0.0005    0.0004    0.0003
   0.0008    0.0007    0.0007    0.0007    0.0006    0.0005

Best Answer

A = [ 0.0004    0.0004    0.0004    0.0003    0.0003    0.0002
0.0006    0.0005    0.0005    0.0005    0.0004    0.0003
0.0008    0.0007    0.0007    0.0007    0.0006    0.0005]
[a b c] = unique(A);
B = im2uint8(linspace(0,1,numel(a)))
out = reshape(B(c),size(A))
imagesc(out)
ADD
B = linspace(0,1,numel(a))
out = reshape(B(c),size(A))
image(bsxfun(@plus,out,zeros(1,1,3)))
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