Extreme subsea environments often cause severe feature de-gradation and estimator divergence in underwater visual-inertial SLAM. Although sensors like Doppler Velocity Logs (DVL) and pressure gauges provide auxiliary constraints, robust multi-sensor fusion during intermittent visual failure remains challenging. To address this, we present APVI-SLAM, a real-time multi-sensor fusion SLAM system that achieves both accurate underwater localization and photorealistic mapping. Our approach introduces a reliability-aware localization framework that dynamically reweights sensor estimators and employs a sliding-window freezing strategy to recover from tracking failures, substantially enhancing system robustness. Furthermore, for high-fidelity scenes reconstruction, we propose an efficient quadtree-guided mapping module that facilitates incremental water-medium modeling and 3D Gaussian optimization. Recognizing the lack of benchmark for underwater mapping evaluation, we also contribute a coral reef surveying dataset with synchronized multi-modality data. Extensive experiments on public and our proposed benchmarks demonstrate that APVI-SLAM achieves state-of-the-art localization and reconstruction quality at real-time speeds.
WaterSplat-SLAM: Photorealistic Monocular SLAM in Underwater Environment
Department of Electronic Engineering, Tsinghua University（清华大学电子工程系）；Key Laboratory of Marine Robotics, Shenyang（沈阳海洋机器人重点实验室）；University of Chinese Academy of Sciences（中国科学院大学）；Department of Electronic and Computer Engineering, The Hong Kong University of Science and Technology（香港科技大学电子及计算机工程学系）
EGS-SLAM: RGB-D Gaussian Splatting SLAM with Events
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore（南洋理工大学电子与电气工程学院）；School of Instrumentation and Optoelectronics Engineering, Beihang University, Beijing, China（北京航空航天大学仪器与光电工程学院）
本文提出 EGS-SLAM 框架，通过融合事件数据与 RGB-D 输入并建模相机连续曝光轨迹，有效解决运动模糊问题，实现了高精度的稳健跟踪与高保真 3D 高斯泼溅重建。
MAGS-SLAM: Monocular Multi-Agent Gaussian Splatting SLAM for Geometrically and Photometrically Consistent Reconstruction
ETH Zurich（苏黎世联邦理工学院）；Harbin Engineering University（哈尔滨工程大学）；University of Liverpool（利物浦大学）；University of Macau（澳门大学）；University of Ottawa（多伦多大学）；Wuhan University（武汉大学）；Imperial College London（伦敦帝国学院）
RMGS-SLAM: Real-time Multi-sensor Gaussian Splatting SLAM
Advanced Robotics Centre, National University of Singapore（新加坡国立大学先进机器人中心）；School of Aeronautics and Astronautics, Shanghai Jiao Tong University（上海交通大学航空宇航学院）；College of Computer Science, Sichuan University（四川大学计算机学院）；Singapore-MIT Alliance for Research and Technology（新加坡-麻省理工联合研究技术联盟）
Monocular simultaneous localisation and mapping (SLAM) is a cheap and energy efficient way to enable Unmanned Aerial Vehicles (UAVs) to safely navigate managed forests and gather data crucial for monitoring tree health. SLAM research, however, has mostly been conducted in structured human environments, and as such is poorly adapted to unstructured forests. In this paper, we compare the performance of state of the art monocular SLAM systems on forest data and use visual appearance statistics to characterise the differences between forests and other environments, including a photorealistic simul…
Medical endoscopy remains a challenging application for simultaneous localization and mapping (SLAM) due to the sparsity of image features and size constraints that prevent direct depth-sensing. We present a SLAM approach that incorporates depth predictions made by an adversarially-trained convolutional neural network (CNN) applied to monocular endoscopy images. The depth network is trained with synthetic images of a simple colon model, and then fine-tuned with domain-randomized, photorealistic images rendered from computed tomography measurements of human colons. Each image is paired with an …
Robust Gaussian Splatting SLAM by Leveraging Loop Closure
School of Communication Engineering, Hangzhou Dianzi University（杭州电子科技大学通信工程学院）；Lishui Institute of Hangzhou Dianzi University（杭州电子科技大学丽水研究院）；School of Automation, Hangzhou Dianzi University（杭州电子科技大学自动化学院）；Faculty of Applied Sciences, Macao Polytechnic University（澳门理工大学应用科学学院）；School of Electrical and Electronics Engineering, Nanyang Technological University（南洋理工大学电气与电子工程学院）；School of Software, Tsinghua University（清华大学软件学院）；Technical University of Munich（慕尼黑工业大学）
MCGS-SLAM: A Multi-Camera SLAM Framework Using Gaussian Splatting for High-Fidelity Mapping
Department of Mathematics, ETH Zurich（苏黎世联邦理工学院数学系）；Department of Mechanical and Process Engineering, ETH Zurich（苏黎世联邦理工学院机械与工艺工程系）；Department of Informatics, University of Zurich（苏黎世大学信息系）；Institute for Photogrammetry, University of Stuttgart（斯图加特大学摄影测量研究所）；Computer Vision and Geometry Group, ETH Zurich（苏黎世联邦理工学院计算机视觉与几何组）；Microsoft Spatial AI Lab（微软空间AI实验室）；Computer Vision Research Group, University of Amsterdam（阿姆斯特丹大学计算机视觉研究组）
MMD-SLAM: Structure-Enhanced Multi-Meta Gaussian Distribution-Guided Visual SLAM
HFIPS, Chinese Academy of Sciences（中国科学院合肥物质科学研究院）；University of Science and Technology of China（中国科学技术大学）；Aarhus University（奥胡斯大学）；University of Tokyo（东京大学）；Beijing University of Chemical Technology（北京化工大学）；North China Electric Power University（华北电力大学）
VIO has been widely used and researched to control and aid the automation of navigation of robots especially in the absence of absolute position measurements, such as GPS. However, when observable landmarks in the scene lie far away from the robot's sensor suite, as it is the case at high altitude flights, the fidelity of estimates and the observability of the metric scale degrades greatly for these methods. Aiming to tackle this issue, in this article, we employ two UAVs equipped with one monocular camera and one IMU each, to exploit their view overlap and relative distance measurements betwe…
LIV-GaussMap: LiDAR-Inertial-Visual Fusion for Real-time 3D Radiance Field Map Rendering
The Hong Kong University of Science and Technology（香港科技大学）；The Hong Kong University of Science and Technology (Guangzhou)（香港科技大学（广州））；The University of Hong Kong（香港大学）
The University of Adelaide（阿德莱德大学）；InnoPeak Technology, Inc.（InnoPeak科技公司）；Monash University（莫纳什大学）；Australian National University（澳大利亚国立大学）
A high-quality 3D reconstruction of a scene from a collection of 2D images can be achieved through offline/online mapping methods. In this paper, we explore active mapping from the perspective of implicit representations, which have recently produced compelling results in a variety of applications. One of the most popular implicit representations - Neural Radiance Field (NeRF), first demonstrated photorealistic rendering results using multi-layer perceptrons, with promising offline 3D reconstruction as a by-product of the radiance field. More recently, researchers also applied this implicit re…
Adaptive World Memory 3D Foundation Model for Scalable 3D Mapping, Localization, and Rendering
Shanghai Jiao Tong University（上海交通大学）；State Key Laboratory of Avionics Integration and Aviation System-of-Systems Synthesis（航空电子综合与航空系统体系综合国家重点实验室）；Shanghai Key Laboratory of Navigation and Location Based Services（上海市导航与位置服务重点实验室）；Nanyang Technological University（南洋理工大学）；University of Technology Nuremberg（纽伦堡工业大学）
