3D Semantic Segmentation

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Overview

3D semantic segmentation labels the parts of a three-dimensional scene, helping robots, vehicles, and mapping systems understand both what objects are and where they are. Common approaches process point clouds with point or voxel transformers, fuse LiDAR with camera features, or transfer 2D foundation-model predictions into 3D; newer work also segments Gaussian-splatting and mesh representations. Indoor benchmarks such as ScanNet and S3DIS and outdoor benchmarks such as SemanticKITTI and nuScenes measure progress, alongside few-shot, unsupervised, and open-vocabulary settings that reduce dependence on dense labels. A central challenge is making accurate boundaries and fine-grained predictions transfer across sensors, viewpoints, and domains without excessive annotation or computation.

Latest papers

CardsList

137 papers12 papers in the last four weeks, down 37% on the four weeks before. 0.1% of all new papers.

  1. Uncertainty-aware Prototype Learning with Variational Inference for Few-shot Point Cloud Segmentation

    Mar 20, 2026Yifei Zhao, Fanyu Zhao, Yinsheng LiFew-Shot Semantic Segmentation3D Point Cloud Segmentation

    Fudan University, Shanghai, China

  2. TCATSeg: A Tooth Center-Wise Attention Network for 3D Dental Model Semantic Segmentation

    Mar 17, 2026Qiang He, Wentian Qu, Jiajia Dai +93D Semantic Segmentation3D Point Cloud Segmentation

    Institute of Software, Chinese Academy of Sciences · University of Chinese Academy of Sciences · Department of Computer Science and Technology, Tsinghua University +2

  3. SCOPE: Scene-Contextualized Incremental Few-Shot 3D Segmentation

    Mar 6, 2026Vishal Thengane, Zhaochong An, Tianjin Huang +5Few-Shot Semantic Segmentation3D Semantic Segmentation

    University of Surrey, UK · University of Wollongong, Australia · University of Copenhagen, Denmark +2

  4. P-SLCR: Unsupervised Point Cloud Semantic Segmentation via Prototypes Structure Learning and Consistent Reasoning

    Mar 6, 2026Lixin Zhan, Jie Jiang, Tianjian Zhou +33D Point Cloud Segmentation3D Semantic Segmentation

    College of Systems Engineering, National University of Defense Technology · Laboratory for Big Data and Decision, National University of Defense Technology

  5. Adaptive Augmentation-Aware Latent Learning for Robust LiDAR Semantic Segmentation

    Mar 1, 2026Wangkai Li, Zhaoyang Li, Yuwen Pan +33D Point Cloud Segmentation3D Semantic Segmentation

    University of Science and Technology of China · National Key Laboratory of Deep Space Exploration, Deep Space Exploration Laboratory

  6. MME: Mixture of Mesh Experts with Random Walk Transformer Gating

    Feb 28, 2026Amir Belder, Ayellet TalMixture-of-Experts ModelsExpert Routing

    Technion - Israel Institute of Technology, Israel

  7. Unsupervised Semantic Segmentation in Synchrotron Computed Tomography with Self-Correcting Pseudo Labels

    Feb 27, 2026Austin Yunker, Peter Kenesei, Hemant Sharma +3Unsupervised Image Segmentation3D Semantic Segmentation

    Data Science and Learning Division, Argonne National Laboratory, Lemont, IL USA · X-Ray Science Division, Argonne National Laboratory, Lemont, IL USA

  8. Enhancing 3D LiDAR Segmentation by Shaping Dense and Accurate 2D Semantic Predictions

    Feb 21, 2026Xiaoyu Dong, Tiankui Xian, Wanshui Gan +1Multimodal Semantic Segmentation3D Semantic Segmentation

    The University of Tokyo, Tokyo, Japan · RIKEN AIP, Tokyo, Japan

  9. Cross-view Domain Generalization via Geometric Consistency for LiDAR Semantic Segmentation

    Feb 16, 2026Jindong Zhao, Yuan Gao, Yang Xia +4Domain Generalization3D Semantic Segmentation

    School of Aeronautic Engineering, Changsha University of Science and Technology, Hunan, China, 410004. · Aerospace Information Research Institute, Chinese Academy of Sciences, Beijing, China, 100094. · School of Automation, Central South University, Changsha 410083, China +1

  10. DivAS: Interactive 3D Segmentation by Depth-Weighted Voxel Aggregation

    Jan 8, 2026Ayush Pande, Mayank VatsaImage Segmentation3D Semantic Segmentation

    Department of Computer Science and Engineering Indian Institute of Technology Kanpur · Department of Computer Science and Engineering Indian Institute of Technology Jodhpur

  11. G2P: Gaussian-to-Point Attribute Alignment for Boundary-Aware 3D Segmentation

    Jan 7, 2026Hojun Song, Chae-yeong Song, Jeong-hun Hong +53D Point Cloud Segmentation3D Semantic Segmentation

    Kyungpook National University · Korea Electronics Technology Institute · Adobe Research +1

  12. Label-Efficient 3D Forest Mapping: Self-Supervised and Transfer Learning for Instance Segmentation, Semantic Segmentation, and Species Classification

    Nov 9, 2025Aldino Rizaldy, Fabian Ewald Fassnacht, Ahmed Jamal Afifi +3Self-Supervised LearningTree Species Classification

    Helmholtz-Zentrum Dresden-Rossendorf (HZDR), Helmholtz Institute Freiberg for Resource Technology (HIF), 09599 Freiberg, Germany. · Institute of Geomatics, BOKU University, 1190 Vienna, Austria · Remote Sensing and Geoinformatics, Freie Universität Berlin, 12249 Berlin, Germany +1

  13. BikeScenes: LiDAR Semantic Segmentation for Bicycles

    Oct 29, 2025Denniz Goren, Holger CaesarAutonomous Driving Perception3D Semantic Segmentation

  14. Few to Big: Prototype Expansion Network via Diffusion Learner for Point Cloud Few-shot Semantic Segmentation

    Sep 16, 2025Qianguang Zhao, Dongli Wang, Yan Zhou +23D Point Cloud SegmentationPrototype Learning

    School of Mathematics and Computational Science, Xiangtan University, Xiangtan 411105, China · School of Automation and Electronics Information, Xiangtan University, Xiangtan 411105, China · School of Automation, Shanghai Jiao Tong University, Shanghai 200232, China

  15. CoRe-GS: Coarse-to-Refined Gaussian Splatting with Semantic Object Focus

    Sep 5, 2025Hannah Schieber, Dominik Frischmann, Victor Schaack +43D Gaussian Splatting3D Reconstruction

    Technical University of Munich · Human-Centered Computing and Extended Reality Lab · TUM University Hospital, Clinic for Orthopedics and Sports Orthopedics +3

  16. PointGauss: Point Cloud-Guided Multi-Object Segmentation for Gaussian Splatting

    Aug 1, 2025Wentao Sun, Yiping Chen, John S. Zelek +13D Gaussian Splatting3DGS Segmentation

    University of Waterloo, Waterloo, ON N2L 3G1, Canada · Sun Yat-Sen University, Zhuhai 519082, China

  17. EPMF: Efficient Perception-aware Multi-sensor Fusion for 3D Semantic Segmentation

    Jun 21, 2021Mingkui Tan, Zhuangwei Zhuang, Sitao Chen +4Camera-LiDAR FusionAutonomous Driving Perception

    School of Software Engineering, South China University of Technology · Pazhou Laboratory, Guangzhou, China · School of Electronic and Information Engineering, South China University of Technology +2