alpha channel

分类: IT文章 • 2023-11-13 09:26:37

from PIL import Image
image = Image.open("lena.jpg")
buffer=[]
for pixel in image.getdata():
buffer.append((
pixel[0],
pixel[1],
pixel[2],
pixel[3]-150,
))
image.putdata(buffer)

image.save('python_filter2.png')