Radiance Meshes for Volumetric Reconstruction

• URL: http://arxiv.org/abs/2512.04076v1
• Date: Wed, 03 Dec 2025 18:57:03 GMT
• Title: Radiance Meshes for Volumetric Reconstruction
• Authors: Alexander Mai, Trevor Hedstrom, George Kopanas, Janne Kontkanen, Falko Kuester, Jonathan T. Barron,
• Abstract summary: We introduce radiance meshes, a technique for representing radiance fields with constant density tetrahedral cells.<n>Our model is able to perform exact and fast volume rendering using both synthesisization and ray-tracing.<n>Our rendering method exactly evaluates the volume equation and enables high quality, real-time view on standard consumer hardware.
• Score: 56.51690637804858
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: We introduce radiance meshes, a technique for representing radiance fields with constant density tetrahedral cells produced with a Delaunay tetrahedralization. Unlike a Voronoi diagram, a Delaunay tetrahedralization yields simple triangles that are natively supported by existing hardware. As such, our model is able to perform exact and fast volume rendering using both rasterization and ray-tracing. We introduce a new rasterization method that achieves faster rendering speeds than all prior radiance field representations (assuming an equivalent number of primitives and resolution) across a variety of platforms. Optimizing the positions of Delaunay vertices introduces topological discontinuities (edge flips). To solve this, we use a Zip-NeRF-style backbone which allows us to express a smoothly varying field even when the topology changes. Our rendering method exactly evaluates the volume rendering equation and enables high quality, real-time view synthesis on standard consumer hardware. Our tetrahedral meshes also lend themselves to a variety of exciting applications including fisheye lens distortion, physics-based simulation, editing, and mesh extraction.

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