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The imread of python opencv 3.1 can't work with chinese pathdir?

asked 2016-11-26 01:23:57 -0500

The imread command can't read a picture with a chinese path.
import cv2 import numpy as np f=r"D:\OneDrive\火山渣颗粒原始数据\火山渣处理.bmp" img=cv2.imread(f,0)

If use img=cv2.imread(f.encode('gbk'),0), there will raise a TypeError: bad argument type for built-in operatio.

  • OS: win7 64bit
  • Opencv: 3.1
  • Python: 3.5.2

But, when I use Python 2.7 and Opencv 2.4, it work well with:
f=ur"D:\OneDrive\火山渣颗粒原始数据\火山渣_处理.bmp".encode('gbk')

How can I solve this problem?

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answered 2016-11-26 01:50:10 -0500

berak gravatar image

updated 2016-11-26 07:59:01 -0500

there is no support for unicode strings in opencv at all, (imread(), imwrite(), putText(), etc) you will have to use plain ascii filenames.

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I'm sure opencv 2.4 work well in 2nd examp with python 2.7
(f=ur"D:\OneDrive\火山渣颗粒原始数据\火山渣_处理.bmp".encode('gbk')).

I found when I use the command f=r"D:\OneDrive\火山渣颗粒原始数据\火山渣_处理.bmp".encode('gbk')
on python 2.7, the returned f is
b'D:\\OneDrive\\\xbb\xf0\xc9\xbd\xd4\xfc\xbf\xc5\xc1\xa3\xd4\xad\xca\xbc\xca\xfd\xbe\xdd\\\xbb\xf0\xc9\xbd\xd4\xfc_\xb4\xa6\xc0\xed.bmp'

while the return on python 3.5 is
'D:\\OneDrive\\\xbb\xf0\xc9\xbd\xd4\xfc\xbf\xc5\xc1\xa3\xd4\xad\xca\xbc\xca\xfd\xbe\xdd\\\xbb\xf0\xc9\xbd\xd4\xfc_\xb4\xa6\xc0\xed.bmp'.
Maybe the difference raise the problem.

xiejunyi1991 gravatar imagexiejunyi1991 ( 2016-11-26 07:44:43 -0500 )edit

please do not use chinese characters in the 1st place for this.

berak gravatar imageberak ( 2016-11-26 07:58:13 -0500 )edit
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Asked: 2016-11-26 01:16:32 -0500

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Last updated: Nov 26 '16