Panoptic Quality is described here: https://openaccess.thecvf.com/content_CVPR_2019/papers/Kirillov_Panoptic_Segmentation_CVPR_2019_paper.pdf

This is a useful metric for instance segmentation and it would be great to have it in the HoVerNet pipeline.

Also used in this challenge for nuclei identification: https://conic-challenge.grand-challenge.org/Evaluation/