zero-mean deviation on image

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Valeska Pearson
Valeska Pearson on 18 Jul 2013
I can find to obtain the right output, after doing the statistical normalization on retinal image. It is to standardize all images, because some are dark and other are too light.
Here follows my code:
DefaultName = 'C:\Users\nvg\Desktop\Hoofstuk 3\Matlab\images';
[FileName,PathName,FilterIndex] = uigetfile(FilterSpec,'Image file selector',DefaultName);
if (FilterIndex >0)
LeerNaam = strcat(PathName,FileName); % get filename
OriginalRGB = imread(LeerNaam); % read image
end
figure, imshow(OriginalRGB);
gemiddeld=mean2(OriginalRGB)
standaard_afwyking=std2(OriginalRGB)
NormalizedArray = (OriginalRGB-gemiddeld) ./ standaard_afwyking;
NormalizedArray =((NormalizedArray+ 3)./ 6).*255
I want it to be in linear format between 0-255?
  1 Comment
Valeska Pearson
Valeska Pearson on 18 Jul 2013
I am getting either a black image or a white image. Why can't I get a normalized version image?

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