Creating a file in a non-existing folder using OpenCV in Python

Question

i am trying to create an image file using opencv in python. when i am creating it in same folder file is created

          face_file_name = "te.jpg"
          cv2.imwrite(face_file_name, image)

but when i am trying to create it in another folder like

          face_file_name = "test\te.jpg"
          cv2.imwrite(face_file_name, image)

file is not created. can someone explain the reasons??

i even tried giving absolute path. i am using python2.7 in windows.

What about [escape characters](http://en.wikipedia.org/wiki/Escape_character)? What if you tried `"test\\te.jpg"`? — chrisaycock, Jul 07 '13 at 15:55
and its only creating if folder already exits wht if i want to create a new folder and create the file in it — rlvamsi, Jul 07 '13 at 16:10

score 47 · Accepted Answer · answered Jul 07 '13 at 20:46

cv2.imwrite() will not write an image in another directory if the directory does not exist. You first need to create the directory before attempting to write to it:

import os
dirname = 'test'
os.mkdir(dirname)

From here, you can either write to the directory without changing your working directory:

cv2.imwrite(os.path.join(dirname, face_file_name), image)

Or change your working directory and omit the directory prefix, depending on your needs:

os.chdir(dirname)
cv2.imwrite(face_file_name, image)

Thanks a lot! Took me a long time before I realised I had to create the folder, couldn't figure out why my images wouldn't be saved :/ — The Oddler, Mar 29 '16 at 15:08

Creating a file in a non-existing folder using OpenCV in Python

1 Answers1

Linked