how to resolve this error "subscript indices must either be real positive integers or logicals"

hi,

Following is the code of Contrast limited histogram Equalization (CLAHE),

 [m,n]=size(yy);
NrX=8;NrY=8;
XSize=floor(m/NrX);
YSize=floor(n/NrY);
NrBins=256;
Min=min(yy(:));
Max=max(yy(:));

 LUT=makeLUT(Min,Max,NrBins);
% avgBin = NrPixels/NrBins;

 Bin=1+LUT(round(yy));

where make makeLUT function is this

 function [LUT] = makeLUT(Min,Max,NrBins)
%  To speed up histogram clipping, the input image [Min,Max] is scaled down to
%  [0,uiNrBins-1]. This function calculates the LUT.

 Max1 = Max + max(1,Min) - Min;
 Min1 = max(1,Min);

 BinSize = fix(1 + (Max - Min)/NrBins);
 LUT = zeros(fix(Max - Min),1);
 for i=Min1:Max1
    LUT(i) = fix((i - Min1)/BinSize);
end

I am getting error here at the following line yy is my image.

 Bin=1+LUT(round(yy));

any Suggesion Please !!!

[dpb]

I'm guessing you're getting

round(yy)==0

Maybe you want ceil instead????

Answer 1

[Muhammad Ali Qadar]

I did this and it works

Bin=1+LUT(round(yy+1));