MonoEM-GS: Monocular Expectation-Maximization Gaussian Splatting SLAM

Fuente: arXiv
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Hauptverfasser: Kruzhkov, Evgenii, Behnke, Sven
Format: Preprint
Veröffentlicht: 2026
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author Kruzhkov, Evgenii
Behnke, Sven
author_facet Kruzhkov, Evgenii
Behnke, Sven
contents Feed-forward geometric foundation models can infer dense point clouds and camera motion directly from RGB streams, providing priors for monocular SLAM. However, their predictions are often view-dependent and noisy: geometry can vary across viewpoints and under image transformations, and local metric properties may drift between frames. We present MonoEM-GS, a monocular mapping pipeline that integrates such geometric predictions into a global Gaussian Splatting representation while explicitly addressing these inconsistencies. MonoEM-GS couples Gaussian Splatting with an Expectation--Maximization formulation to stabilize geometry, and employs ICP-based alignment for monocular pose estimation. Beyond geometry, MonoEM-GS parameterizes Gaussians with multi-modal features, enabling in-place open-set segmentation and other downstream queries directly on the reconstructed map. We evaluate MonoEM-GS on 7-Scenes, TUM RGB-D and Replica, and compare against recent baselines.
format Preprint
id arxiv_https___arxiv_org_abs_2604_10593
institution arXiv
publishDate 2026
record_format arxiv
spellingShingle MonoEM-GS: Monocular Expectation-Maximization Gaussian Splatting SLAM
Kruzhkov, Evgenii
Behnke, Sven
Robotics
Feed-forward geometric foundation models can infer dense point clouds and camera motion directly from RGB streams, providing priors for monocular SLAM. However, their predictions are often view-dependent and noisy: geometry can vary across viewpoints and under image transformations, and local metric properties may drift between frames. We present MonoEM-GS, a monocular mapping pipeline that integrates such geometric predictions into a global Gaussian Splatting representation while explicitly addressing these inconsistencies. MonoEM-GS couples Gaussian Splatting with an Expectation--Maximization formulation to stabilize geometry, and employs ICP-based alignment for monocular pose estimation. Beyond geometry, MonoEM-GS parameterizes Gaussians with multi-modal features, enabling in-place open-set segmentation and other downstream queries directly on the reconstructed map. We evaluate MonoEM-GS on 7-Scenes, TUM RGB-D and Replica, and compare against recent baselines.
title MonoEM-GS: Monocular Expectation-Maximization Gaussian Splatting SLAM
topic Robotics
url https://arxiv.org/abs/2604.10593