CG-SLAM: Efficient Dense RGB-D SLAM in a Consistent Uncertainty-aware 3D Gaussian Field
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Abstract (arXiv)
Recently neural radiance fields (NeRF) have been widely exploited as 3D representations for dense simultaneous localization and mapping (SLAM). Despite their notable successes in surface modeling and novel view synthesis, existing NeRF-based methods are hindered by their computationally intensive and time-consuming volume rendering pipeline. This paper presents an efficient dense RGB-D SLAM system, i.e., CG-SLAM, based on a novel uncertainty-aware 3D Gaussian field with high consistency and geometric stability. Through an in-depth analysis of Gaussian Splatting, we propose several techniques to construct a consistent and stable 3D Gaussian field suitable for tracking and mapping. Additionally, a novel depth uncertainty model is proposed to ensure the selection of valuable Gaussian primitives during optimization, thereby improving tracking efficiency and accuracy. Experiments on various datasets demonstrate that CG-SLAM achieves superior tracking and mapping performance with a notable tracking speed of up to 15 Hz. We will make our source code publicly available. Project page: https://zju3dv.github.io/cg-slam.
Key facts. Cited by 61 papers in the map (data through 14 Oct 2026). Builds on 48 of its 64 references that are in the map. First posted on arXiv 24 Mar 2024.
Builds on
48 of 64 references.
References · 48
- 20233D Gaussian Splatting for Real-Time Radiance Field Renderingcited by 6,226
- 2022Instant Neural Graphics Primitives with a Multiresolution Hash Encodingcited by 3,723
- 2017ScanNet: Richly-annotated 3D Reconstructions of Indoor Scenescited by 3,117
- 2021Mip-NeRF 360: Unbounded Anti-Aliased Neural Radiance Fieldscited by 2,032
- 2021Mip-NeRF: A Multiscale Representation for Anti-Aliasing Neural Radiance Fieldscited by 1,964
- 2021Plenoxels: Radiance Fields without Neural Networkscited by 1,613
- 2020pixelNeRF: Neural Radiance Fields from One or Few Imagescited by 1,584
- 2015NetVLAD: CNN architecture for weakly supervised place recognitioncited by 941
- 2019The Replica Dataset: A Digital Replica of Indoor Spacescited by 904
- 2020GRAF: Generative Radiance Fields for 3D-Aware Image Synthesiscited by 689
- 2021DROID-SLAM: Deep Visual SLAM for Monocular, Stereo, and RGB-D Camerascited by 687
- 2021BARF: Bundle-Adjusting Neural Radiance Fieldscited by 642
36 more
- 2023SuGaR: Surface-Aligned Gaussian Splatting for Efficient 3D Mesh Reconstruction and High-Quality Mesh Renderingcited by 616
- 2021NICE-SLAM: Neural Implicit Scalable Encoding for SLAMcited by 589
- 2022Point-NeRF: Point-based Neural Radiance Fieldscited by 503
- 2021iMAP: Implicit Mapping and Positioning in Real-Timecited by 476
- 2023Gaussian Grouping: Segment and Edit Anything in 3D Scenescited by 393
- 2023SplaTAM: Splat, Track & Map 3D Gaussians for Dense RGB-D SLAMcited by 388
- 2023Feature 3DGS: Supercharging 3D Gaussian Splatting to Enable Distilled Feature Fieldscited by 364
- 2022Fast Dynamic Radiance Fields with Time-Aware Neural Voxelscited by 346
- 2023GaussianEditor: Swift and Controllable 3D Editing with Gaussian Splattingcited by 335
- 2022Rodin: A Generative Model for Sculpting 3D Digital Avatars Using Diffusioncited by 309
- 2023GS-SLAM: Dense Visual SLAM with 3D Gaussian Splattingcited by 278
- 2022Tensor4D : Efficient Neural 4D Decomposition for High-fidelity Dynamic Reconstruction and Renderingcited by 217
- 2020D3VO: Deep Depth, Deep Pose and Deep Uncertainty for Monocular Visual Odometrycited by 206
- 2022NeRF-SLAM: Real-Time Dense Monocular SLAM with Neural Radiance Fieldscited by 188
- 2023Co-SLAM: Joint Coordinate and Sparse Parametric Encodings for Neural Real-Time SLAMcited by 184
- 2023GaussianEditor: Editing 3D Gaussians Delicately with Text Instructionscited by 168
- 2023Point-SLAM: Dense Neural Point Cloud-based SLAMcited by 160
- 2017CNN-SLAM: Real-time dense monocular SLAM with learned depth predictioncited by 152
- 2016Voxblox: Incremental 3D Euclidean Signed Distance Fields for On-Board MAV Planningcited by 150
- 2022Vox-Fusion: Dense Tracking and Mapping with Voxel-based Neural Implicit Representationcited by 149
- 2023NeuSG: Neural Implicit Surface Reconstruction with 3D Gaussian Splatting Guidancecited by 138
- 2023ASH: Animatable Gaussian Splats for Efficient and Photoreal Human Renderingcited by 104
- 2022Orbeez-SLAM: A Real-time Monocular Visual SLAM with ORB Features and NeRF-realized Mappingcited by 79
- 2023Learning Neural Volumetric Representations of Dynamic Humans in Minutescited by 70
- 2023GAvatar: Animatable 3D Gaussian Avatars with Implicit Mesh Learningcited by 63
- 2023Gaussian Shell Maps for Efficient 3D Human Generationcited by 61
- 2023NeO 360: Neural Fields for Sparse View Synthesis of Outdoor Scenescited by 53
- 2023DeformGS: Scene Flow in Highly Deformable Scenes for Deformable Object Manipulationcited by 42
- 2021TANDEM: Tracking and Dense Mapping in Real-time using Deep Multi-view Stereocited by 39
- 2023SplatArmor: Articulated Gaussian splatting for animatable humans from monocular RGB videoscited by 35
- 2023CP-SLAM: Collaborative Neural Point-based SLAM Systemcited by 32
- 2023Multi-Modal Neural Radiance Field for Monocular Dense SLAM with a Light-Weight ToF Sensorcited by 30
- 2022DELTAR: Depth Estimation from a Light-weight ToF Sensor and RGB Imagecited by 26
- 2023UncLe-SLAM: Uncertainty Learning for Dense Neural SLAMcited by 19
- 2023SceNeRFlow: Time-Consistent Reconstruction of General Dynamic Scenescited by 11
- 2023NeRF-VINS: A Real-time Neural Radiance Field Map-based Visual-Inertial Navigation Systemcited by 7
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Citing papers per year: 2024: 17; 2025: 28; 2026: 16.
61 papers.
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- 2024AbsGS: Recovering Fine Details for 3D Gaussian Splattingcited by 82
- 20243D Gaussian Splatting: Survey, Technologies, Challenges, and Opportunitiescited by 78
- 2025WildGS-SLAM: Monocular Gaussian Splatting SLAM in Dynamic Environmentscited by 50
- 2025CityGS-X: A Scalable Architecture for Efficient and Geometrically Accurate Large-Scale Scene Reconstructioncited by 26
- 2024MG-SLAM: Structure Gaussian Splatting SLAM with Manhattan World Hypothesiscited by 22
- 2025Outdoor Monocular SLAM with Global Scale-Consistent 3D Gaussian Pointmapscited by 22
- 2024Drone-assisted Road Gaussian Splatting with Cross-view Uncertaintycited by 20
- 2024IncEventGS: Pose-Free Gaussian Splatting from a Single Event Cameracited by 20
- 2026Multiplayer Interactive World Models with Representation Autoencoderscited by 19
- 2025RGB-Only Gaussian Splatting SLAM for Unbounded Outdoor Scenescited by 18
- 2024Advancing Extended Reality with 3D Gaussian Splatting: Innovations and Prospectscited by 17
- 2024VDG: Vision-Only Dynamic Gaussian for Driving Simulationcited by 16
38 more
- 2025DenseSplat: Densifying Gaussian Splatting SLAM with Neural Radiance Priorcited by 14
- 2024BlinkVision: A Benchmark for Optical Flow, Scene Flow and Point Tracking Estimation using RGB Frames and Eventscited by 13
- 2024MAGiC-SLAM: Multi-Agent Gaussian Globally Consistent SLAMcited by 12
- 2024CoSurfGS:Collaborative 3D Surface Gaussian Splatting with Distributed Learning for Large Scene Reconstructioncited by 11
- 2025SEGS-SLAM: Structure-enhanced 3D Gaussian Splatting SLAM with Appearance Embeddingcited by 11
- 2025GaussianUpdate: Continual 3D Gaussian Splatting Update for Changing Environmentscited by 11
- 2025Gaussian-Plus-SDF SLAM: High-fidelity 3D Reconstruction at 150+ fpscited by 11
- 2025Online Language Splattingcited by 10
- 2026DROID-SLAM in the Wildcited by 10
- 2025ARTDECO: Towards Efficient and High-Fidelity On-the-Fly 3D Reconstruction with Structured Scene Representationcited by 9
- 2025VTGaussian-SLAM: RGBD SLAM for Large Scale Scenes with Splatting View-Tied 3D Gaussianscited by 8
- 2024MGSO: Monocular Real-time Photometric SLAM with Efficient 3D Gaussian Splattingcited by 7
- 2025PhysGS: Bayesian-Inferred Gaussian Splatting for Physical Property Estimationcited by 7
- 2024ETO:Efficient Transformer-based Local Feature Matching by Organizing Multiple Homography Hypothesescited by 6
- 2025These Magic Moments: Differentiable Uncertainty Quantification of Radiance Field Modelscited by 6
- 2025GauRast: Enhancing GPU Triangle Rasterizers to Accelerate 3D Gaussian Splattingcited by 6
- 2025UP-SLAM: Adaptively Structured Gaussian SLAM with Uncertainty Prediction in Dynamic Environmentscited by 6
- 2025DINO-SLAM: DINO-informed RGB-D SLAM for Neural Implicit and Explicit Representationscited by 6
- 2025VIGS-SLAM: Visual Inertial Gaussian Splatting SLAMcited by 6
- 2025OpenGS-Fusion: Open-Vocabulary Dense Mapping with Hybrid 3D Gaussian Splatting for Refined Object-Level Understandingcited by 5
- 2024GSplatLoc: Ultra-Precise Camera Localization via 3D Gaussian Splattingcited by 4
- 2025FGS-SLAM: Fourier-based Gaussian Splatting for Real-time SLAM with Sparse and Dense Map Fusioncited by 4
- 2025ContraGS: Codebook-Condensed and Trainable Gaussian Splatting for Fast, Memory-Efficient Reconstructioncited by 4
- 2024OG-Mapping: Octree-based Structured 3D Gaussians for Online Dense Mappingcited by 3
- 2025On-the-fly Large-scale 3D Reconstruction from Multi-Camera Rigscited by 3
- 2026VarSplat: Uncertainty-aware 3D Gaussian Splatting for Robust RGB-D SLAMcited by 3
- 2025DNRSelect: Active Best View Selection for Deferred Neural Renderingcited by 2
- 2025Robust and High-Fidelity 3D Gaussian Splatting: Fusing Pose Priors and Geometry Constraints for Texture-Deficient Outdoor Scenescited by 2
- 2026The Semantic Lifecycle in Embodied AI: Acquisition, Representation and Storage via Foundation Modelscited by 2
- 2026Towards Next-Generation SLAM: A Survey on 3DGS-SLAM Focusing on Performance, Robustness, and Future Directionscited by 2
- 2024PH-Dropout: Practical Epistemic Uncertainty Quantification for View Synthesiscited by 1
- 2025S3LAM: Surfel Splatting SLAM for Geometrically Accurate Tracking and Mappingcited by 1
- 2025Pseudo Depth Meets Gaussian: A Feed-forward RGB SLAM Baselinecited by 1
- 2025Smol-GS: Compact Representations for Abstract 3D Gaussian Splattingcited by 1
- 2026SCE-SLAM: Scale-Consistent Monocular SLAM via Scene Coordinate Embeddingscited by 1
- 2026RU4D-SLAM: Reweighting Uncertainty in Gaussian Splatting SLAM for 4D Scene Reconstructioncited by 1
- 2026SGAD-SLAM: Splatting Gaussians at Adjusted Depth for Better Radiance Fields in RGBD SLAMcited by 1
- 2026DeGS: A Scalable 3DGS Architecture via Decoupled Workload Parsing and Reorganizationcited by 1
50 most cited of 61 All 61 (JSON)
- 2026Cube-Splat: High-Fidelity 360deg Gaussian Splatting SLAM via Cubemap Factorization and Adjoint-Consistent Optimization18 Sep 2026
- 2026RawSLAM: Online HDR Gaussian SLAM from Linear Radiance17 Sep 2026
- 2026DSG: Dynamic 3D Scene Graph Construction for Embodied Agents in Changing Indoor Environments1 Sep 2026
- 2026CGS-SLAM: Collaborative Gaussian Splatting based SLAM for Multi-Agent Reconstruction27 Aug 2026
- 2026DeGS: A Scalable 3DGS Architecture via Decoupled Workload Parsing and Reorganization3 Aug 2026
- 2026Stipple: Real-Time Incremental Gaussian Splatting with Visual-Inertial Tracking2 Aug 2026
- 2026Multiplayer Interactive World Models with Representation Autoencoders6 Jul 2026
- 2026Robust and Efficient Monocular 3D Gaussian SLAM for Kilometer-Scale Outdoor Scenes29 Jun 2026
- 2026Compact Keyframe-Optimized Multi-Agent Gaussian Splatting SLAM1 Apr 2026
- 2026SGAD-SLAM: Splatting Gaussians at Adjusted Depth for Better Radiance Fields in RGBD SLAM22 Mar 2026
- 2026DROID-SLAM in the Wild19 Mar 2026
- 2026VarSplat: Uncertainty-aware 3D Gaussian Splatting for Robust RGB-D SLAM10 Mar 2026
38 more
- 2026RU4D-SLAM: Reweighting Uncertainty in Gaussian Splatting SLAM for 4D Scene Reconstruction24 Feb 2026
- 2026Towards Next-Generation SLAM: A Survey on 3DGS-SLAM Focusing on Performance, Robustness, and Future Directions4 Feb 2026
- 2026SCE-SLAM: Scale-Consistent Monocular SLAM via Scene Coordinate Embeddings14 Jan 2026
- 2026The Semantic Lifecycle in Embodied AI: Acquisition, Representation and Storage via Foundation Models12 Jan 2026
- 2025On-the-fly Large-scale 3D Reconstruction from Multi-Camera Rigs9 Dec 2025
- 2025VIGS-SLAM: Visual Inertial Gaussian Splatting SLAM2 Dec 2025
- 2025Smol-GS: Compact Representations for Abstract 3D Gaussian Splatting30 Nov 2025
- 2025PhysGS: Bayesian-Inferred Gaussian Splatting for Physical Property Estimation23 Nov 2025
- 2025Robust and High-Fidelity 3D Gaussian Splatting: Fusing Pose Priors and Geometry Constraints for Texture-Deficient Outdoor Scenes10 Nov 2025
- 2025ARTDECO: Towards Efficient and High-Fidelity On-the-Fly 3D Reconstruction with Structured Scene Representation9 Oct 2025
- 2025ConfidentSplat: Confidence-Weighted Depth Fusion for Accurate 3D Gaussian Splatting SLAM21 Sep 2025
- 2025Gaussian-Plus-SDF SLAM: High-fidelity 3D Reconstruction at 150+ fps15 Sep 2025
- 2025ContraGS: Codebook-Condensed and Trainable Gaussian Splatting for Fast, Memory-Efficient Reconstruction3 Sep 2025
- 2025Online 3D Gaussian Splatting Modeling with Novel View Selection19 Aug 2025
- 2025GaussianUpdate: Continual 3D Gaussian Splatting Update for Changing Environments12 Aug 2025
- 2025Pseudo Depth Meets Gaussian: A Feed-forward RGB SLAM Baseline6 Aug 2025
- 2025OpenGS-Fusion: Open-Vocabulary Dense Mapping with Hybrid 3D Gaussian Splatting for Refined Object-Level Understanding2 Aug 2025
- 2025S3LAM: Surfel Splatting SLAM for Geometrically Accurate Tracking and Mapping28 Jul 2025
- 2025DINO-SLAM: DINO-informed RGB-D SLAM for Neural Implicit and Explicit Representations25 Jul 2025
- 2025Outdoor Monocular SLAM with Global Scale-Consistent 3D Gaussian Pointmaps4 Jul 2025
- 2025VTGaussian-SLAM: RGBD SLAM for Large Scale Scenes with Splatting View-Tied 3D Gaussians3 Jun 2025
- 2025UP-SLAM: Adaptively Structured Gaussian SLAM with Uncertainty Prediction in Dynamic Environments28 May 2025
- 2025WildGS-SLAM: Monocular Gaussian Splatting SLAM in Dynamic Environments4 Apr 2025
- 2025CityGS-X: A Scalable Architecture for Efficient and Geometrically Accurate Large-Scale Scene Reconstruction29 Mar 2025
- 2025GauRast: Enhancing GPU Triangle Rasterizers to Accelerate 3D Gaussian Splatting20 Mar 2025
- 2025These Magic Moments: Differentiable Uncertainty Quantification of Radiance Field Models18 Mar 2025
- 2025Online Language Splatting12 Mar 2025
- 2025FGS-SLAM: Fourier-based Gaussian Splatting for Real-time SLAM with Sparse and Dense Map Fusion3 Mar 2025
- 2025RGB-Only Gaussian Splatting SLAM for Unbounded Outdoor Scenes21 Feb 2025
- 2025DenseSplat: Densifying Gaussian Splatting SLAM with Neural Radiance Prior13 Feb 2025
- 2025DNRSelect: Active Best View Selection for Deferred Neural Rendering21 Jan 2025
- 2025SEGS-SLAM: Structure-enhanced 3D Gaussian Splatting SLAM with Appearance Embedding9 Jan 2025
- 2024GSplatLoc: Ultra-Precise Camera Localization via 3D Gaussian Splatting28 Dec 2024
- 2024CoSurfGS:Collaborative 3D Surface Gaussian Splatting with Distributed Learning for Large Scene Reconstruction23 Dec 2024
- 2024Advancing Extended Reality with 3D Gaussian Splatting: Innovations and Prospects9 Dec 2024
- 2024MAGiC-SLAM: Multi-Agent Gaussian Globally Consistent SLAM25 Nov 2024
- 2024XRDSLAM: A Flexible and Modular Framework for Deep Learning based SLAM31 Oct 2024
- 2024ETO:Efficient Transformer-based Local Feature Matching by Organizing Multiple Homography Hypotheses30 Oct 2024
50 newest of 61 All 61 (JSON)
- 2024AbsGS: Recovering Fine Details for 3D Gaussian Splattingcited by 82
- 20243D Gaussian Splatting: Survey, Technologies, Challenges, and Opportunitiescited by 78
- 2025WildGS-SLAM: Monocular Gaussian Splatting SLAM in Dynamic Environmentscited by 50
- 2025CityGS-X: A Scalable Architecture for Efficient and Geometrically Accurate Large-Scale Scene Reconstructioncited by 26
- 2024MG-SLAM: Structure Gaussian Splatting SLAM with Manhattan World Hypothesiscited by 22
- 2025Outdoor Monocular SLAM with Global Scale-Consistent 3D Gaussian Pointmapscited by 22
- 2024Drone-assisted Road Gaussian Splatting with Cross-view Uncertaintycited by 20
- 2024IncEventGS: Pose-Free Gaussian Splatting from a Single Event Cameracited by 20
- 2025RGB-Only Gaussian Splatting SLAM for Unbounded Outdoor Scenescited by 18
- 2024Advancing Extended Reality with 3D Gaussian Splatting: Innovations and Prospectscited by 17
- 2025DenseSplat: Densifying Gaussian Splatting SLAM with Neural Radiance Priorcited by 14
- 2024BlinkVision: A Benchmark for Optical Flow, Scene Flow and Point Tracking Estimation using RGB Frames and Eventscited by 13
12 most cited of 57 All 57 (JSON)
- 2026Cube-Splat: High-Fidelity 360deg Gaussian Splatting SLAM via Cubemap Factorization and Adjoint-Consistent Optimization18 Sep 2026
- 2026RawSLAM: Online HDR Gaussian SLAM from Linear Radiance17 Sep 2026
- 2026CGS-SLAM: Collaborative Gaussian Splatting based SLAM for Multi-Agent Reconstruction27 Aug 2026
- 2026DeGS: A Scalable 3DGS Architecture via Decoupled Workload Parsing and Reorganization3 Aug 2026
- 2026Stipple: Real-Time Incremental Gaussian Splatting with Visual-Inertial Tracking2 Aug 2026
- 2026Robust and Efficient Monocular 3D Gaussian SLAM for Kilometer-Scale Outdoor Scenes29 Jun 2026
- 2026Compact Keyframe-Optimized Multi-Agent Gaussian Splatting SLAM1 Apr 2026
- 2026SGAD-SLAM: Splatting Gaussians at Adjusted Depth for Better Radiance Fields in RGBD SLAM22 Mar 2026
- 2026DROID-SLAM in the Wild19 Mar 2026
- 2026VarSplat: Uncertainty-aware 3D Gaussian Splatting for Robust RGB-D SLAM10 Mar 2026
- 2026RU4D-SLAM: Reweighting Uncertainty in Gaussian Splatting SLAM for 4D Scene Reconstruction24 Feb 2026
- 2026Towards Next-Generation SLAM: A Survey on 3DGS-SLAM Focusing on Performance, Robustness, and Future Directions4 Feb 2026
12 newest of 57 All 57 (JSON)