What is the difference between point cloud completion task and point cloud masked reconstruction?

Pang-Yatian / Point-MAE

[ECCV2022] Masked Autoencoders for Point Cloud Self-supervised Learning

MIT License

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What is the difference between point cloud completion task and point cloud masked reconstruction? #9

Closed jlqzzz closed 2 years ago

jlqzzz commented 2 years ago

First of all, thank you for your outstanding work!

The pretext task used in your pre-training phase is point cloud masked reconstruction.

I wonder what's the difference between point cloud completion task and point cloud masked reconstruction?

Pang-Yatian commented 2 years ago

Hi,

I would say that in our pre-text task, the masked point patches still have the information of their centers' position. However in point cloud completion task, we have no information about the missing part, which is a more difficult task.

jlqzzz commented 2 years ago

Hi,

I would say that in our pre-text task, the masked point patches still have the information of their centers' position. However in point cloud completion task, we have no information about the missing part, which is a more difficult task.

I get it! Thank you!