Segmentation Fault Using cv2.connectedComponentsWithStats

[chrisdonlan]

Expected behaviour

Returns valid outputs corresponding to the following line of code given a numpy.ndarray binary image (black = 0, white = 255) of uint8 pixels:

self.count, self.mask, stats, centroids = cv2.connectedComponentsWithStats(
    cc_img.astype(np.uint8)), connectivity=connectivity
)

Actual behaviour

After raising my minimum allowed opencv-python version from 4.5.1 to 4.5.4, this error emerged.

Steps to reproduce

• example code

import numpy as np

X = np.random.randint(0, 1, (100, 100))
X_img = (X * 255).astype(np.uint8)

import cv2
count, mask, stats, centroids = cv2.connectedComponentsWithStats(X_img, connectivity=4)

Result: Segmentation fault: 11

• operating system

MacOSX "Darwin", Kernel Version 20.6.0

• architecture (e.g. x86)

x86_64

• opencv-python version

opencv-python 4.5.5.62

Issue submission checklist

• This is not a generic OpenCV usage question (looking for help for coding, other usage questions, homework etc.)
• I have read the README of this repository and understand that this repository provides only an automated build toolchain for OpenCV Python packages (there is no actual OpenCV code here)
• The issue is related to the build scripts in this repository, to the pre-built binaries or is a feature request (such as "please enable this additional dependency")
• I'm using the latest version of opencv-python

[chrisdonlan]

I am not sure this is the right repo to submit this issue, let me know and I will re-submit on the opencv project.

Unfortunately, in order to submit in the main opencv project, I have to refactor this reproducible example into C++ code (likely on this work laptop to trigger the bug). With that in mind, I am submitting here first -- apologies if it is the wrong project.

[alalek]

Already submitted everywhere. Duplicate.

[kforcodeai]

faced this same issue