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Autores principales: Recasens, David, Maier, Robert, Bozic, Aljaz, Grabli, Stephane, Civera, Javier, Tung, Tony, Boyer, Edmond
Formato: Preprint
Publicado: 2026
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Acceso en línea:https://arxiv.org/abs/2604.22129
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author Recasens, David
Maier, Robert
Bozic, Aljaz
Grabli, Stephane
Civera, Javier
Tung, Tony
Boyer, Edmond
author_facet Recasens, David
Maier, Robert
Bozic, Aljaz
Grabli, Stephane
Civera, Javier
Tung, Tony
Boyer, Edmond
contents Gaussian Splatting (GS) has emerged as an efficient approach for high-quality novel view synthesis. While early GS variants struggled to accurately model the scene's geometry, recent advancements constraining the Gaussians' spread and shapes, such as 2D Gaussian Splatting, have significantly improved geometric fidelity. In this paper, we present Pixel-Aligned 1DoF Gaussian Splatting (PAGaS) that adapts the GS representation from novel view synthesis to the multi-view stereo depth task. Our key contribution is modeling a pixel's depth using one-degree-of-freedom (1DoF) Gaussians that remain tightly constrained during optimization. Unlike existing approaches, our Gaussians' positions and sizes are restricted by the back-projected pixel volumes, leaving depth as the sole degree of freedom to optimize. PAGaS produces highly detailed depths, as illustrated in Figure 1. We quantitatively validate these improvements on top of reference geometric and learning-based multi-view stereo baselines on challenging 3D reconstruction benchmarks. Code: davidrecasens.github.io/pagas
format Preprint
id arxiv_https___arxiv_org_abs_2604_22129
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle PAGaS: Pixel-Aligned 1DoF Gaussian Splatting for Depth Refinement
Recasens, David
Maier, Robert
Bozic, Aljaz
Grabli, Stephane
Civera, Javier
Tung, Tony
Boyer, Edmond
Computer Vision and Pattern Recognition
Robotics
Gaussian Splatting (GS) has emerged as an efficient approach for high-quality novel view synthesis. While early GS variants struggled to accurately model the scene's geometry, recent advancements constraining the Gaussians' spread and shapes, such as 2D Gaussian Splatting, have significantly improved geometric fidelity. In this paper, we present Pixel-Aligned 1DoF Gaussian Splatting (PAGaS) that adapts the GS representation from novel view synthesis to the multi-view stereo depth task. Our key contribution is modeling a pixel's depth using one-degree-of-freedom (1DoF) Gaussians that remain tightly constrained during optimization. Unlike existing approaches, our Gaussians' positions and sizes are restricted by the back-projected pixel volumes, leaving depth as the sole degree of freedom to optimize. PAGaS produces highly detailed depths, as illustrated in Figure 1. We quantitatively validate these improvements on top of reference geometric and learning-based multi-view stereo baselines on challenging 3D reconstruction benchmarks. Code: davidrecasens.github.io/pagas
title PAGaS: Pixel-Aligned 1DoF Gaussian Splatting for Depth Refinement
topic Computer Vision and Pattern Recognition
Robotics
url https://arxiv.org/abs/2604.22129