枕头将png转换为8bit位图 [英] Pillow convert png to 8bit bitmap

问题描述

我尝试将8位PNG转换为8位(256索引调色板)位图图像， 但是枕头一直在呕吐糟糕的结局.

i tried to convert 8bit PNGs to 8bit(256indexed palette) Bitmap image, but Pillow is keep vomiting crappy outcome.

这就是我尝试过的.

image = Image.open(file)
image = image.convert('P')
pp = image.getpalette()
pp[0] = 255
pp[1] = 0
pp[2] = 255
image.putpalette(pp)

或

image = Image.open(file)
image = image.convert('P')
image.save(blabla.bmp)

这就是我期望看到的结果. 这是一个实际的位图(由Photoshop完成). Photoshop 这是枕头做的: 枕头 这是什么玩笑? 甚至被裁剪掉了 我应该怎么做才能正确转换它?

and this is the outcome what i expected to see. this is an actual bitmap(done by Photoshop.) Photoshop and this is what Pillow did: Pillow what kind of joke is this ?! and it even got cropped out what should i do to convert it correctly?

原始图片:

推荐答案

您可以这样做:

from PIL import Image

# Open image
image = Image.open('feather.png')

# Quantize to 256 colours using fast octree method
result = image.quantize(colors=256, method=2)

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