Unable to identify keypoints

[Hustben]

Hi dice developers, when i use stereo analysis, i cannot find keypoints when doing camera calibration,whats the reason. Looking forward to your reply. Thank you.

[dicengine]

The reason is that the cal target has an unusual patter, which isn't supported by DICe. Rather than larger circles in a somewhat random pattern, you need to have three donut circles at the corners of a rectangle for the marker dots. Then it should work.