cv2.imshow unable to display image

[SenShao]

The test code is as follows.

import cv2
from pyskl.apis import init_recognizer  # No error will be reported if this line of code is commented.
def main():
    vid = cv2.VideoCapture("rtsp://admin:lgl---616@192.168.61.6:554/media/video2")
    flag, frame = vid.read()

    cv2.imshow("test", frame)
    print("over")
if __name__ == '__main__':
    main()

The error is ‘Process finished with exit code 139(interrupted by signal 11:SIGSEGV)’.
Error is mainly caused by 'from pyskl.apis import init_recognizer'.
I specially created a new environment for testing.

#120 It should be the same question as mine.

[Haodong Duan]

You can try the new installation guide to reinstall pyskl and see if the problem has been fixed now.
Sorry for the late fix.

[Giacomo Nunziati]

import numpy as np
import cv2

from pyskl.apis import init_recognizer
from pyskl.datasets import GestureDataset
from pyskl.datasets.pipelines import Compose
from pyskl.smp import h2r

arr = np.random.randint(0, 256, (200, 200, 3), dtype=np.uint8)
cv2.imshow('output', arr)
cv2.waitKey(5)
input()

Running this minimal code still causes a segmentation fault when trying to execute cv2.imshow.
The import statements at lines 4 to 7 are the import required in the demo_gesture.py and if I comment them, cv2.imshow works.

I have already tried to install pyskl following the new installation guide.
I also tried to install different versions of opencv.

I'm running this code on Ubuntu 20.04.

[Haodong Duan]

Hi, nunziati,
My Windows laptop can run your minimal examples bug-free. This weekend I can have a try with a clean Ubuntu 22.04 linux desktop and I will provide more updates then.

[Giacomo Nunziati]

Thank you, I found out that the "import decord" statement in smp.py caused cv2.imshow to stop with a segmentation fault.
For the moment I just commented that line, since it is not strictly required.
I have decord 0.6.0 and I've not tried different versions.

[sight96]

Thank you, I found out that the "import decord" statement in smp.py caused cv2.imshow to stop with a segmentation fault. For the moment I just commented that line, since it is not strictly required. I have decord 0.6.0 and I've not tried different versions.

thanks！！I solved it by your method!