Inter-Reflective Gaussian Splatting for Robust and Efficient Inverse Rendering
Faithful inverse rendering requires visibility and indirect radiance to explain secondary illumination and inter-reflection, yet rasterization-oriented Gaussian representations do not naturally support the secondary-ray queries needed to recover them. We present IRGS++ (Inter-Reflective Gaussian Splatting), a unified robust and efficient Gaussian inverse rendering framework. During transport-aware optimization, IRGS++ employs differentiable 2D Gaussian ray tracing on surface-oriented Gaussian primitives to query visibility and indirect radiance on the fly and evaluate the full rendering equation for inter-reflective transport. This physical core makes Gaussian inverse rendering physically...
| Authors | Chun Gu, Xiaofei Wei, Zixuan Zeng et al. |
|---|---|
| Primary category | cs.GR |
| Published | 24 July 2026 |
| Last updated at source | 24 July 2026 |
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