Nearest-Neighbour-Search-Neural-Networks-Product-Quantization/MNIST/Functions/imshow255.m

function imshow255(newfig,imgSz,Xset)
% imshow255 shows a 8-bit quantized picture
% contained in the vector Xset, by splitting
% it into squared pictures of size imgSz

nPics=size(Xset,1);

    if(nPics>20)
       nPics=20;
    end

for kk=1:nPics
    if(newfig)
    figure()
    else
        subplot(2,ceil(nPics/2),kk)
    end
    imshow(255-Vector2PictureMatrix(imgSz,1,Xset(kk,:)),[0 255])
end
end