Checkpoint ply seems worse than project page?

[DukeofCambridge]

Hi, thanks for your great work. But your provided checkpoints (matrix city aerial) on hugging face seems much worse than your video on project page. Did you upload the correct version of well-trained results? Thanks.

[DekuLiuTesla]

@DukeofCambridge Which demo and ckpt are you using? V1 and V2 are different

[DukeofCambridge]

@DekuLiuTesla I used the full model (5800MB) of V1 from https://huggingface.co/TeslaYang123/CityGaussian/tree/main. The results seem to be similar with your provided viewer (the sky is cleaner but still heavy artifacts on many buildings). Here are two example views.

I also checked the V2 checkpoints like below:

Is it normal?

[DekuLiuTesla]

@DukeofCambridge Since V2 undergoes trimming and compression, its rendering quality is worse than V1, but the training efficiency and geometric accuracy are much higher. Besides, in our demos, the floaters are automatically removed according to the statistical properties of their spatial distribution. And thus the results seem better.

[DukeofCambridge]

Thanks. Then I wonder how you automatically remove floaters (and how to judge if a point is a floater). Maybe it's better to integrate it into the code?

[DekuLiuTesla]

@DukeofCambridge Yes, it has been integrated. Please refer to https://github.com/Linketic/CityGaussian/blob/db21484dc262a446d12995633ac1b80bba44d4c9/doc/render_video.md, we have offered demo generation code.

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