如何将base64转换为TIFF图像或PNG图像？

约翰·我

我有一个TIFF图像类型的base64编码的字符串，我想使用python将其转换为PNG图像。我看到了可以操纵tiff文件的包装枕头，但是如何进行给定的“ TIFF的base64”？

简单

base64至tiff：

import base64

text_base64 = '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'

bytes_base64 = text_base64.encode()
data = base64.b64decode(bytes_base64)
open('image.tiff', 'wb').write(data)

tiff到base64和html：

import base64

data = open('image.tiff', 'rb').read()
bytes_base64 = base64.b64encode(data)
text_base64 = bytes_base64.decode()

print(text_base64)

html = '<img src="data:image/tiff;base64,' + text_base64 + '">'
open('output-tiff.html', 'w').write(html)

可能大多数浏览器无法显示tiff，因此.html文件可能显示损坏的图像。您必须将其从页面保存到文件，然后才能看到tiff。

这是示例中使用的图像，但png格式如下：

编辑：具有相同图像但png格式的示例。此html将在每个浏览器中显示图像。

# base64 to png

import base64

text_base64 = 'iVBORw0KGgoAAAANSUhEUgAAAAoAAAAKCAAAAACoWZBhAAAAMklEQVR4nEXNwQkAMBACwfFI/y2bxwXia8FFUwF1pCCNJTIIwaD04ctsKRyaldI/9i8u1iwOE6FA880AAAAASUVORK5CYII='

bytes_base64 = text_base64.encode()
data = base64.b64decode(bytes_base64)
open('image.png', 'wb').write(data)

# png to base64 and html

import base64

data = open('image.png', 'rb').read()
bytes_base64 = base64.b64encode(data)
text_base64 = bytes_base64.decode()

print(text_base64)

html = '<img src="data:image/png;base64,' + text_base64 + '">'
open('output-png.html', 'w').write(html)

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