如何从带有 Unicode 字符的路径中读取图像? [英] How do I read an image from a path with Unicode characters?

问题描述

我有以下代码但它失败了，因为它无法从磁盘读取文件.图像总是None.

I have the following code and it fails, because it cannot read the file from disk. The image is always None.

# -*- coding: utf-8 -*-
import cv2
import numpy

bgrImage = cv2.imread(u'D:\ö\handschuh.jpg')

注意:我的文件已经保存为带有 BOM 的 UTF-8.我用 Notepad++ 验证过.

Note: my file is already saved as UTF-8 with BOM. I verified with Notepad++.

在进程监视器中，我看到 Python 从错误的路径访问文件:

In Process Monitor, I see that Python is acccessing the file from a wrong path:

我已阅读:

• 用unicode文件名打开文件，这是关于open() 函数，与 OpenCV 无关.
• 如何使用 Python 读取图像文件，但这与 Unicode 问题无关.

• Open file with unicode filename, which is about the open() function and not related to OpenCV.
• How do I read an image file using Python, but that's unrelated to Unicode issues.

推荐答案

可以通过

• 使用 open() 打开文件，它在链接的答案中支持 Unicode，
• 将内容读取为字节数组，
• 将字节数组转换为 NumPy 数组，
• 解码图像

• opening the file using open(), which supports Unicode as in the linked answer,
• read the contents as a byte array,
• convert the byte array to a NumPy array,
• decode the image

# -*- coding: utf-8 -*-
import cv2
import numpy

stream = open(u'D:\ö\handschuh.jpg', "rb")
bytes = bytearray(stream.read())
numpyarray = numpy.asarray(bytes, dtype=numpy.uint8)
bgrImage = cv2.imdecode(numpyarray, cv2.IMREAD_UNCHANGED)

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