python - Error when transforming numpy array to PIL Image -


i have variable img int64 numpy.array sizes 28x28. content looks this:

[...] [  0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0   0     0   0   0   0   0   0   0   0   0   0] [  0   0   0   0   0   0   0   0   0  68 154 188 176 254 254 254 254 254   227 106  17   0   0   0   0   0   0   0] [...]

i want convert array pil image. call img = image.fromarray(img, mode='l') output 0s while obvious shouldn't that. have checked mode options , seems l correct. checked other answers inside stackoverflow , couldn't find reproduces particular problem.

l (8-bit pixels, black , white)

why "simple" piece of code given unexpected behaviour?

thanks in advance!

as @divakar pointed out, data types not coherent.

just adding np.uint8() works:

img = image.fromarray(np.uint8(img), mode='l')

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