File "computeProposals.py", line 66, in main _, contours, _ = cv2.findContours(mask.copy(), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_NONE) ValueError: not enough values to unpack (expected 3, got 2)

[tim94173]

when i run
"python computeProposals.py --arch DeepMask --resume $DEEPMASK/pretrained/deepmask/DeepMask.pth.tar --img ./data/test.jpg", I get this error result:

File "computeProposals.py", line 66, in main _, contours, _ = cv2.findContours(mask.copy(), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_NONE) ValueError: not enough values to unpack (expected 3, got 2)

how can i sovle it ,thank you

[alzayats]

Downgrade cv2 version 4.x to version 3.x.
OpenCV 3 changed cv2.findContours(...) to return image, contours, hierarchy, while OpenCV 2's cv2.findContours(...) and OpenCV 4's cv2.findContours(...) return contours, hierarchy.

[jefflgaol]

The easy way is to change this (computeProposals.py)

_, contours, _ = cv2.findContours(mask.copy(), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_NONE)

to this

contours, _ = cv2.findContours(mask.copy(), cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_NONE)