Python 类型错误：应为整数参数，将图像转换为灰度时得到浮点数
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时间：2020-08-19 04:44:06 来源:igfitidea点击:
TypeError: integer argument expected, got float when converting an image to greyscale
提问by u4774924
I am using the following code to convert a color image to a grayscale image. Why does it throw a TypeError?
我正在使用以下代码将彩色图像转换为灰度图像。为什么会抛出一个TypeError？
#!/usr/bin/python
from PIL import Image
im = Image.open("Penguins.jpg")
pixel = im.load()
width, height = im.size
for x in range(width):
for y in range(height):
R,G,B = pixel[x,y]
pixel[x,y] = ((0.299*R+0.587*G+0.114*B),(0.299*R+0.587*G+0.114*B),(0.299*R+0.587*G+0.114*B))
im.save("Penguins_new.jpg")
采纳答案by Zizouz212
The argument that you are passing to pixel[x, y]needs to be an int, not a float. Try casting it as an integer.
您传递给的参数pixel[x, y]必须是int，而不是float。尝试将其转换为整数。
pixel[x, y] = ((int(0.299*R) + int(...
