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caiyuanhao1998 / X-Gaussian

"Radiative Gaussian Splatting for Efficient X-ray Novel View Synthesis" (ECCV 2024)
https://arxiv.org/abs/2403.04116
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Volume generation #3

Closed eliyash closed 7 months ago

eliyash commented 7 months ago

Hi, Regarding volume generation, as I understand, you use classical reconstruction algorithm with noval views, my question is why cant you use the gaussians themselves? As they are 3d objects with size?

caiyuanhao1998 commented 7 months ago

Hi, thanks for your interests Because Gaussian Splatting cannot directly infer the radiodensity of 3D points. It is not an easy thing. The attribute "opacity" is not density. We have tried various volume density blending strategies to blend the density by using opacity. But it is very slow and the accuracy is pretty poor.