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ClunoGS: Compact Language 3D Gaussian Splatting via Unified Optimization

Jian Xu, Yi Li, Ying Huang, Siyi Wu, Bingzhe Li, Yuede Ji, Miao Yin · 2026 · arXiv

DOI: 10.48550/arXiv.2610.30013 · open-access PDF

Portuguese

A linguagem 3D Gaussian Splatting permite a compreensão de cenas de vocabulário aberto associando primitivos Gaussian com características de linguagem. Esses atributos semânticos aumentam o armazenamento de modelos, enquanto a maioria dos métodos de compressão 3DGS existentes são projetados principalmente para preservar a qualidade de renderização RGB. Uma abordagem simples é aplicar a sparsificação e a quantização sequencialmente. No entanto, o corte baseado apenas na qualidade de renderização pode remover Gaussians que têm pequenas contribuições RGB mas são importantes para a previsão semântica. Uma vez removido, suas informações semânticas não podem ser recuperadas por quantização posterior.

Machine translation (Meta M2M100); the English original follows.

Abstract

Language 3D Gaussian Splatting enables open-vocabulary scene understanding by associating Gaussian primitives with language features. These semantic attributes increase model storage, while most existing 3DGS compression methods are designed mainly to preserve RGB rendering quality. One straightforward approach is to apply sparsification and quantization sequentially. However, pruning based only on rendering quality can remove Gaussians that have small RGB contributions but are important for semantic prediction. Once removed, their semantic information cannot be recovered by later quantization

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