Cross shaped marker

[sangjun04]

First of all, thank you for such a great work!

I am trying to experiment detecting a cross shaped marker and I am trying to modify the codebook to detect cross markers.
It would be great if you could explain the codebook text file. It has 16 columns and 587 rows, so I am not sure how it represents the marker.

Below is the cross shaped marker I am trying to detect.

Thanks!

[sskzzm]

Is it a single marker instead of a set of markers with different IDs? As its appearance is not similar to the existing checkerboard marker families (AprilTag/ArUco), it is not supported by DeepTag.