How can I convert an RGB image into grayscale in Python?

Question

I\'m trying to use matplotlib to read in an RGB image and convert it to grayscale.

In matlab I use this:

img = rgb2gray(imread(\'image.p         


        

Answer 1

Use img.Convert(), supports “L”, “RGB” and “CMYK.” mode

import numpy as np
from PIL import Image

img = Image.open("IMG/center_2018_02_03_00_34_32_784.jpg")
img.convert('L')

print np.array(img)

Output:

[[135 123 134 ...,  30   3  14]
 [137 130 137 ...,   9  20  13]
 [170 177 183 ...,  14  10 250]
 ..., 
 [112  99  91 ...,  90  88  80]
 [ 95 103 111 ..., 102  85 103]
 [112  96  86 ..., 182 148 114]]