Opacity-Based Occlusion Culling for 3D Gaussian Splatting
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Date
2026
Journal Title
Journal ISSN
Volume Title
Publisher
The Eurographics Association
Abstract
We present an occlusion culling pipeline for 3D Gaussian Splatting (3DGS) that reduces rendering cost while preserving visual fidelity. Our two-stage framework combines a coarse stage—which uses an opacity volume and hierarchical occlusion maps to cull Gaussians invisible from the current viewpoint—with a fine stage that partitions Gaussians into depth-ordered batches and discards those projecting to fully opaque pixels. Early culling prior to sorting reduces the workload for downstream sorting, projection, and blending, cutting per-frame computation and memory bandwidth. The pipeline scales to millions of Gaussians, making it practical for real-time 3DGS rendering.
Description
CCS Concepts: Computing methodologies → Rendering; Volumetric models; Visibility
@inproceedings{10.2312:egp.20261015,
booktitle = {Eurographics 2026 - Posters},
editor = {Gerrits, Tim and Teschner, Matthias},
title = {{Opacity-Based Occlusion Culling for 3D Gaussian Splatting}},
author = {Giannone, Matteo and Ibrahim, Mohamed and Liu, Yang },
year = {2026},
publisher = {The Eurographics Association},
ISSN = {1017-4656},
ISBN = {978-3-03868-300-1},
DOI = {10.2312/egp.20261015}
}