imresize interpolates between pixels when downscaling. You might just want to index into the image?
sqrt_restrict(img, i) = img[1:round(Int,sqrt(2)^i):end, :]
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imresize interpolates between pixels when downscaling. You might just want to index into the image?
sqrt_restrict(img, i) = img[1:round(Int,sqrt(2)^i):end, :]