Question about block merging

[Thang Vu]

Thanks for your nice work. I have a question related to block-merging function.
In Blockmerging I don't quite understand the hard code at L#52:
if maxoverlapgroupcounts[i] < 7 and groupcounts[i] > 12.
What is 7 and 12 stand for? Could you please give me some intuition about this if statement.

[Bo Yang]

hi @thangvubk, basically, it means if the new instance does not have more than 7 pts overlapped with previous instances, that new instance will be treated as a real new instance, otherwise, it will be regarded as the same instance.