I am trying to convert raw data of length 64372(w= 242, h=266) to the image, the raw data is in the format of the byte array, I want to convert this byte array into image, can you help me with that?

解决方案

You can generate a bytearray of dummy data representing a gradient like this:

import numpy as np

# Generate a left-right gradient 242 px wide by 266 pixels tall

ba = bytearray((np.arange(242) + np.zeros((266,1))).astype(np.uint8))

For reference, that array will contain data like this:

array([[ 0., 1., 2., ..., 239., 240., 241.],

[ 0., 1., 2., ..., 239., 240., 241.],

[ 0., 1., 2., ..., 239., 240., 241.],

...,

[ 0., 1., 2., ..., 239., 240., 241.],

[ 0., 1., 2., ..., 239., 240., 241.],

[ 0., 1., 2., ..., 239., 240., 241.]])

And then make into a PIL/Pillow image like this:

from PIL import Image

# Convert bytearray "ba" to PIL Image, 'L' just means greyscale/lightness

im = Image.frombuffer('L', (242,266), ba, 'raw', 'L', 0, 1)

Then you can save the image like this:

im.save('result.png')

Documentation is here.

2014-10-12 15:50 10422人阅读 评论(0) 收藏 举报

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python(1)

computer vision(5)

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