System Information

OpenCV version: 4.9.0 (last version)

Detailed description

findCirclesGrid can find the circles (blobls), but can't find grid if the grid is rotated.

Steps to reproduce

import cv2 as cvframe = cv.imread("test.png")circle_board_size = (6, 7)ret, circle_centers = cv.findCirclesGrid(frame, circle_board_size)cv.drawChessboardCorners(frame, circle_board_size, circle_centers, ret)print(ret)cv.imshow("CircleGridDetect", frame)cv.waitKey(0)

result:
False

It works if you rotate the grid.

Issue submission checklist

• I report the issue, it's not a question
• I checked the problem with documentation, FAQ, open issues, forum.opencv.org, Stack Overflow, etc and have not found any solution
• I updated to the latest OpenCV version and the issue is still there
• There is reproducer code and related data files (videos, images, onnx, etc)