yangyanli / PointCNN

PointCNN: Convolution On X-Transformed Points (NeurIPS 2018)
https://arxiv.org/abs/1801.07791
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About “Note that S is an unordered set” in the paper #233

Open jjy91234 opened 4 years ago

jjy91234 commented 4 years ago

Hi,thanks for your great job. But I have a question in this paper. I note the sentence in page4 “Note that S is an unordered set”. In my opinion, N has been pertumed in the KNN by the distance from the representative points,why not keep the same order in S? And we don‘t have to learn an X-conv to pertume the neighbors. Looking forward to your answer.