Python/Opencv save multiple images to folder with different names

Question

I am working on image processing, I have a folder with all of the images that needs to be processed, and I want to save all the processed images to another folder. How do I do that?

for img in glob.glob("Img/*.png"):
    path = '/result'
    image = cv2.imread(img)
    angle, rotated = correct_skew(image)
    print(angle)
    cv2.imwrite(os.path.join(path , 'img.png'), rotated)
    cv2.waitKey(1)

This code can read the image and process it, but I can't figure out how to save all the images with different names, like I want it to be img1.png, img2.png, etc.

Or is there anyway that I can save the images to another folder with the same names as before?

python, pathlib

Christoph Rackwitz
– Christoph Rackwitz

2022-04-22 15:46:10 +00:00
Commented Apr 22, 2022 at 15:46 — Christoph Rackwitz
– Christoph Rackwitz, Commented Apr 22, 2022 at 15:46

VLAZ · Accepted Answer · 2022-11-17 19:55:43Z

1

In order to save your processed images in a serial manner, you can use enumerate. When a loop is initiated using enumerate, a counter is also initiated. And each iteration yields an integer number.

In the following case i is the integer value which increments for each iteration. i is used as part of the file name to save the processed image

path = '/result'
for i, img in enumerate(glob.glob("Img/*.png"), 1):
    image = cv2.imread(img)
    angle, rotated = correct_skew(image)
    print(angle)
    cv2.imwrite(os.path.join(output_path, 'img_{}.png'.format(i)), rotated)

edited Nov 17, 2022 at 19:55

VLAZ

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answered Apr 22, 2022 at 14:44

Jeru Luke

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2 Comments

Jack Over a year ago

Thanks for the answer however I got this error: TypeError: join() argument must be str, bytes, or os.PathLike object, not 'ndarray'

Jeru Luke Over a year ago

@JackNg There is a typo in my code. Please change the last line to cv2.imwrite(os.path.join(output_path, 'img_{}.png'.format(i)), rotated)

Linc Minecrafter · Accepted Answer · 2022-09-21 19:47:57Z

0

Save the last line as a variable wrapped in a string()

Then cv2.imwrite(variable)for the last line.

#My thought is to change the type to a string and then write the file as originally desired. When you save as a string you can change whatever type it is turning into inside the for statement.

answered Sep 21, 2022 at 19:47

Linc Minecrafter

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