[英]How can I get grayscale value with PIL?
I did a code to print all of the images pixel's grayscale values我做了一个代码来打印所有图像像素的灰度值
Here is my code:这是我的代码:
from PIL import Image, ImageColor
im = Image.open('upvote.png')
im = im.resize((50, 50))
im = im.convert('LA')#convert to grayscale
for i in range(50):
print('\n')
for j in range(50):
pixel = im[i, j]# get pixel value
print(pixel)
It is expected to get something like this:预计会得到这样的结果:
1 1 1 1 1 1 3 3 3 3 3 1 1 1 1 1 1 1 1 1 1 1 3 3 3 3 3 1 1 1 1 1
3 3 3 3 3 3 1 1 1 1 1 3 3 3 3 3 3 3 3 3 3 3 1 1 1 1 1 3 3 3 3 3
1 1 1 1 1 1 3 3 3 3 3 3 3 3 3 3 1 1 1 1 1 1 3 3 3 3 3 3 3 3 3 3
.... ....
depending on the image取决于图像
but I am getting this error:但我收到此错误:
TypeError: 'Image' object is not subscriptable
Alright, if anyone ever sees this here is how I solved it:好吧,如果有人看到这里是我解决它的方法:
Instead of this:取而代之的是:
pixel = im[i, j]
I used this:我用过这个:
pixel = im.getpixel((i, j))
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