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arXiv · 2501.19196

RaySplats: Ray Tracing based Gaussian Splatting

Krzysztof Byrski·Marcin Mazur·Jacek Tabor·Tadeusz Dziarmaga·Marcin Kądziołka·Dawid Baran·Przemysław Spurek
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Abstract

3D Gaussian Splatting (3DGS) is a process that enables the direct creation of 3D objects from 2D images. This representation offers numerous advantages, including rapid training and rendering. However, a significant limitation of 3DGS is the challenge of incorporating light and shadow reflections, primarily due to the utilization of rasterization rather than ray tracing for rendering. This paper introduces RaySplats, a model that employs ray-tracing based Gaussian Splatting. Rather than utilizing the projection of Gaussians, our method employs a ray-tracing mechanism, operating directly on Gaussian primitives represented by confidence ellipses with RGB colors. In practice, we compute the intersection between ellipses and rays to construct ray-tracing algorithms, facilitating the incorporation of meshes with Gaussian Splatting models and the addition of lights, shadows, and other related effects.

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Krzysztof Byrski, Marcin Mazur, Jacek Tabor, Tadeusz Dziarmaga, Marcin Kądziołka, Dawid Baran, Przemysław Spurek. 2025-01-31. RaySplats: Ray Tracing based Gaussian Splatting. https://arxiv.org/abs/2501.19196

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