cv2.imwrite doesn't work with foreign language names in path.

[TysonLinger]

Expected behaviour

cv2.imwrite("テスト/abc.jpg",img) should save an image to the specified path.

Actual behaviour

Nothing is saved to the path and no error message is provided.

Steps to reproduce

1: Create a directory named "test"
2. Try cv2.imwrite("test/abc.jpg", img). It saves the image to the path as expected.
3. Create another directory named "テスト"
4. Try cv2.imwrite("テスト/abc.jpg", img). Nothing happens.

• Windows 10
• Python 3.7.3
• opencv-python==4.1.0.25

[skvark]

OpenCV does not support unicode file paths. See original issue in OpenCV repository: opencv/opencv#4292

[vquilon]

Encoding issues.... difficult but no impossible

if you have this string = 'テスト/abc.jpg'
You can encode as Windows encoding the characters like this->
print('テスト/abc.jpg'.encode('utf-8').decode('unicode-escape'))
And you get something like this = '���/abc.jpg'

Then if you want to read the file and get the filenames readable and usable, you can use some library to read the filenames of your path and then change the encoding->
#fname is like '���/abc.jpg'
fname.encode('iso-8859-1').decode('utf-8')) # This result of your initial string ='テスト/abc.jpg'