About shared offset fields time complexity

[bominn]

Hi, in Dense-RepPoints it use normal conv for reppoints_pts_refine_conv:
https://github.com/justimyhxu/Dense-RepPoints/blob/master/mmdet/models/anchor_heads/dense_reppoints_head.py#L180

On the other hand, RepPoints use deformable conv for reppoints_pts_refine_conv:
https://github.com/microsoft/RepPoints/blob/master/src/reppoints_head/reppoints_head.py#L144

Is that using normal conv rather than deformable conv makes Dense-RepPoints have O(n) time complexity?
I do not fully understand why RepPoints has O(n^2) time complexity.

thanks

[laisimiao]

Did you figure out? I also noticed this difference