CODEWITHSUNDEEP
pythonopencvcomputer-vision
HuyNA
HuyNA

Reputation: 638

Overcome opencv CV_IO_MAX_IMAGE_PIXELS limitation in python

I'm trying to use opencv to open an image size 4864 x 382565 and it is bigger than CV_IO_MAX_IMAGE_PIXELS limitation which is 2^30 pixels.

img = cv2.cvtColor(cv2.imread(path),cv2.COLOR_BGR2GRAY)

You can do the trick of calling set CV_IO_MAX_IMAGE_PIXELS=18500000000 from the shell before running python script to bypass this check, but I wonder is there a better solution?

Thanks

Upvotes: 2

Views: 7656

Answers (1)

HuyNA
HuyNA

Reputation: 638

I think I found the solution

os.environ["OPENCV_IO_MAX_IMAGE_PIXELS"] = pow(2,40).__str__()
import cv2 # import after setting OPENCV_IO_MAX_IMAGE_PIXELS

This will change the limitation to 2^40

Just remember to import opencv AFTER setting the environment variable, otherwise it wouldn't work

Upvotes: 10

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