Converting .jpg to .txt

Question

I'm trying to convert a .jpg image to .txt but when I run the code below I get the error "ValueError: Expected 1D or 2D array, got 3D array instead". What am I doing wrong?

from PIL import Image
import numpy as np

im = Image.open('Moon.jpg')
pixels = list(im.getdata())
width, height = im.size 
pixels = [pixels[i * width:(i + 1) * width] for i in range(height)]
np.savetxt("Moon_data.txt", pixels, fmt='%d', delimiter=" ")

[`np.savetxt`](https://docs.scipy.org/doc/numpy-1.15.0/reference/generated/numpy.savetxt.html) expects a 1D or 2D array-like object. Your providing a 3D array. — Spencer Wieczorek, Nov 15 '18 at 04:37

score 1 · Answer 1 · answered Nov 15 '18 at 05:13

1

You could convert your image into grayscale, which is a 1D array. This can be saved into a text file. This answer provides to ways of converting an image to grayscale. One using Pillow and the other doing the calculation on your own.

answered Nov 15 '18 at 05:13

FreshD

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Converting .jpg to .txt

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