Some questions about the "grouped_xyz" and “grouped_idx”

Question

Some questions about the "grouped_xyz" and “grouped_idx”

lin1061991611 opened this issue 3 years ago · comments

lin1061991611 commented 3 years ago

Hello, I read two important value named "grouped_xyz" and “grouped_idx” in /scene_seg/model/pointnet2/paconv.py ，and i can not understand it well, could you give some explanation ?

Runyu Ding · Answer 1 · Mon Jan 03 2022 11:01:06 GMT+0800 (China Standard Time)

Hi, in our code, grouped refers to a set of points that are in the same local area. Grouped_idx is the knn/ball-query index of each point and grouped_xyz is the coordinates requested by grouped_idx.