Error using coder.internal.errorIf (line 8) The size of I must be greater than 2*Radius.

Hello, i am getting this error. Actually i am working on BRATS dataset for brain tumor segmentation. Firstly i make superpixels of each slice and for each superpixel i am calculating LBP features but at some superpixel or patch i am getting this error. kindly help me. sharing my code too.Image slice is 240 by 240

[L,N]=superpixels(imgSlice,400);  %apply superpixel segmentation (SLIC Algorithm)
            labelCounter=1;
for patch=1:N            %N is the number of total superpixels/patches.
    t = (L==patch); 
    if mean(t(:))>0.125
         LBPfeatures=extractLBPFeatures(spixel);
    end
end

[FRANCESCO GREGORI]

Hi, I have the same problem, did you solve it?