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aipixel / GPS-Gaussian

[CVPR 2024 Highlight] The official repo for “GPS-Gaussian: Generalizable Pixel-wise 3D Gaussian Splatting for Real-time Human Novel View Synthesis”

Home Page:https://shunyuanzheng.github.io/GPS-Gaussian

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Exporting the Gaussians

crocis opened this issue · comments

commented

I am trying to export the Gaussians in a ply file. When I open the ply file with a Gaussian viewer (SuperSplat), the Gaussians are too big, as shown in the following image showing the partial reconstruction of a person (the blue dots are at the center of the Gaussians):
image

The problem seems to be the scale parameters of the Gaussians. If I set them to -5, I get the following result:
image

commented

Same problem... For me, setting scale to -5 shows a little bit inflated Gaussians in the WebGL Viewer, compared to the ones I could render using the code in this repo.

commented

what do you mean by setting the scale to -5? I read in another issue that we need to take the log of the scale and the inverse sigmoid of the opacity. could you please elaborate a bit more on these? thx