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GLAM-SLAM: Real-time Gaussian Large-scale Mapping via Flow Densification and Spatial Decomposition

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TL;DR - GLAM-SLAM is a real-time monocular SLAM system that scales Gaussian-splatting maps to long outdoor sequences. It improves reconstruction quality while controlling tracking overhead and GPU memory demands.

  • Uses a lightweight feature-based SLAM frontend and a sparse anchor-grid representation for scalable mapping.
  • Densifies 3D Gaussian initialization through geometry-based optical flow and epipolar constraints.
  • Spatially partitions mapping and initializes localized MLPs to preserve scene coherence.
  • Reports 15% better reconstruction quality than the second-best system while maintaining real-time performance.

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GLAM-SLAM: Real-time Gaussian Large-scale Mapping via Flow Densification and Spatial Decomposition

arXiv cs.RO Panagiotis Mermigkas, Argyris Manetas, Petros Maragos 2026-07-23 arXiv:2607.21416
Public signals Semantic Scholar citations 0 · Semantic Scholar influential citations 0
Providers: Hugging Face · N/A OpenAlex · N/A Publisher · N/A Semantic Scholar · Citations 0 · Influential citations 0 X · N/A Fetched 2026-08-12 14:31:20.918102 UTC

TL;DR - GLAM-SLAM is a real-time monocular SLAM system that scales Gaussian-splatting maps to long outdoor sequences. It improves reconstruction quality while controlling tracking overhead and GPU memory demands.

  • Uses a lightweight feature-based SLAM frontend and a sparse anchor-grid representation for scalable mapping.
  • Densifies 3D Gaussian initialization through geometry-based optical flow and epipolar constraints.
  • Spatially partitions mapping and initializes localized MLPs to preserve scene coherence.
  • Reports 15% better reconstruction quality than the second-best system while maintaining real-time performance.
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