Python 将 base64 字符串绘制为图像

Question

我正在尝试将通过服务器接收到的编码为 base64 字符串的 jpg 转换为 RGB 图像，我可以将其与 numpy 一起使用，但也可以使用 matplot lib 进行绘图。我找不到有关如何获取原始 base64 字符串并使用 python 绘制的文档。

我还可以选择以 png 格式接收。

这是我目前所在的位置，这不起作用。随意获取图像字节。

image = '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'

import base64
import io
from matplotlib import pyplot as plt
from array import array
import numpy as np

i = base64.b64decode(image)
i = np.fromstring(image, np.ubyte)

plt.imshow(i, interpolation='nearest')
plt.show()

非常感谢任何帮助。

这是生成服务器发送的编码字符串的代码:

byte[] bytes = image.EncodeToJPG();
return Convert.ToBase64String(bytes);

Answer 1

image = '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'

import base64
import io
from matplotlib import pyplot as plt
import matplotlib.image as mpimg

i = base64.b64decode(image)
i = io.BytesIO(i)
i = mpimg.imread(i, format='JPG')

plt.imshow(i, interpolation='nearest')
plt.show()