3D Shape Completion

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Overview

3D shape completion infers the unseen parts of an object or scene from incomplete observations, helping robots, 3D modeling systems, and medical tools reason about full geometry. Methods range from point-cloud, voxel, and implicit-shape models to statistical shape models and generative diffusion or flow priors, often guided by images, semantic features, or sensor physics. Evaluations span object benchmarks such as PCN and ShapeNet, indoor and driving scenes, and anatomical reconstruction from CT or ultrasound. A central challenge is balancing plausible missing geometry with faithful preservation of observed regions, especially when real-world occlusions differ from training data.

Latest papers

CardsList

23 papers1 paper in the last four weeks, down 67% on the four weeks before. 0.0% of all new papers.

  1. Plausible but Unimplantable: A Trustworthiness Audit of Shape Completion Foundation Models for Cranial Defect Reconstruction

    Oct 21, 2026Marek Wodzinski, Kamil Kwarciak, Daria Hemmerling +1Trustworthy AI3D Shape Completion

    AGH University of Krakow, Krakow, Poland · Sano Centre for Computational Medicine, Krakow, Poland

  2. UBone3D: Physics-Rectified Conditional Flow Matching for Anatomical 3D Shape Completion from Ultrasound

    Sep 10, 2026Weiying Chen, Yuchong Gao, Siyuan Li +3Physics-Informed Generative ModelingPoint Cloud Completion

    University of Alberta, Edmonton, AB, Canada

  3. GSComplete: Gaussian Splat Completion with 2D Diffusion Priors

    Sep 8, 2026Elias Brugger, Philipp Erler, Stefan Ohrhallinger +13D Gaussian Splatting3D Shape Completion

    1TU Wien, Austria · 2Adobe Research, United Kingdom

  4. Observation-Conditioned Latent Energy Priors for Sparse Implicit Neural Shape Completion

    Sep 3, 2026Paul Büschl, Ezequiel de la Rosa, Julia Wolleb +3Implicit Neural Representations3D Reconstruction

    Department of Quantitative Biomedicine, University of Zurich, Zurich, Switzerland · Department of Medical Oncology and Hematology, University Hospital Zurich, Zurich, Switzerland · ETH AI Center, ETH Zurich, Zurich, Switzerland +3

  5. ZODIAC: Zero-shot Octree-based Diffusion for Anatomical Completion

    Aug 25, 2026Miruna-Alexandra Gafencu, Vlad Bratulescu, Yordanka Velikova +23D Shape Completion3D Medical Imaging

    Chair for Computer Aided Medical Procedures (CAMP) Technical University of Munich, Boltzmannstr. 3, 85748 Garching, Germany · Munich Center for Machine Learning (MCML), Munich, Germany · Konrad Zuse School of Excellence in Reliable AI (relAI), Germany

  6. A Strong Linear Baseline for Whole-Heart Cardiac Shape Completion on CT, with an Open Eleven-Structure Statistical Shape Model

    Aug 20, 2026Matej Gazda, Jakub Gazda, Juraj Gazda +13D Shape CompletionStatistical Shape Modeling

    Department of Mathematics and Theoretical Informatics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Letná 1/9, 042 00 Košice, Slovakia · 2nd Department of Internal Medicine, Faculty of Medicine, Pavol Jozef Šafárik University and L. Pasteur University Hospital, Trieda SNP 1, 040 11 Košice, Slovakia · Department of Computers and Informatics, Faculty of Electrical Engineering and Informatics, Technical University of Košice, Letná 1/9, 042 00 Košice, Slovakia

  7. SUMI: Scalable Unified Model for 3D Point Cloud Inference

    Aug 8, 2026Yanlong LI, Kanchana ThilakarathnaPoint Cloud Completion3D Shape Completion

  8. Geospatial-Prior Guidance for 3D Semantic Scene Completion

    Aug 4, 2026Meng Wang, Shougao Zhang, Wenzhe He +43D Occupancy Prediction3D Shape Completion

    College of Computer Science and Electronic Engineering, Hunan University, Hunan, China

  9. Axolotl3D: a Unified Framework for Faithful 3D Shape Completion

    Jul 22, 2026Anita Hu, Maria Shugrina3D ReconstructionMulti-View 3D Reconstruction

    NVIDIA

  10. Restore3D: Breathing Life into Broken Objects with Shape and Texture Restoration

    Jul 1, 2026Xiaolong Shen, Zongxin Yang, Yi Yang3D ReconstructionMulti-View 3D Reconstruction

    ReLER, CCAI, Zhejiang University, Hangzhou, China

  11. CAOA -- Completion-Assisted Object-CAD Alignment

    Jun 16, 2026Hiranya Garbha Kumar, Minhas Kamal, Balakrishnan PrabhakaranPoint Cloud CompletionSymmetry-Aware Object Pose Estimation

    University at Albany Albany, NY, USA

  12. DinoComplete: 3D Shape Completion with Distilled Semantic Priors and State Space Models

    May 26, 2026Furkan Mert Algan, Eckehard Steinbach3D Reconstruction3D Shape Completion

    Chair of Media Technology · Munich Institute of Robotics and Machine Intelligence · School of Computation Information and Technology, Technical University of Munich

  13. I2PRef: Image-Driven Point Completion with Iterative Refinement

    May 26, 2026Azhar Hussian, Marina Ritthaler, André Kaup +1Point Cloud Completion3D Reconstruction

    Friedrich-Alexander-Universität Erlangen-Nürnberg

  14. EvObj: Learning Evolving Object-centric Representations for 3D Instance Segmentation without Scene Supervision

    May 13, 2026Jiahao Chen, Zihui Zhang, Yafei Yang +4Synthetic-to-Real Domain AdaptationObject-Centric Representation Learning

    Shenzhen Research Institute, The Hong Kong Polytechnic University · vLAR Group, The Hong Kong Polytechnic University

  15. ShapeGrasp: Simultaneous Visuo-Haptic Shape Completion and Grasping for Improved Robot Manipulation

    May 4, 2026Lukas Rustler, Matej HoffmannRobotic Grasping3D Reconstruction

    Department of Cybernetics, Faculty of Electrical Engineering, Czech Technical University in Prague, Prague, Czech Republic.

  16. Sketch2Arti: Sketch-based Articulation Modeling of CAD Objects

    Apr 28, 2026Yi Yang, Hao Pan, Yijing Cui +23D Shape Completion

    University of Edinburgh, Edinburgh, United Kingdom · Tsinghua University, Beijing, China · University of British Columbia, Vancouver, Canada

  17. GSCompleter: A Distillation-Free Plugin for Metric-Aware 3D Gaussian Splatting Completion in Seconds

    Apr 22, 2026Ao Gao, Jingyu Gong, Xin Tan +33D Gaussian Splatting3D Reconstruction

    School of Computer Science and Technology, East China Normal University, Shanghai, China · Shanghai Innovation Institute, Shanghai, China · Chongqing Key Laboratory of Precision Optics, Chongqing Institute of East China Normal University, Chongqing, China +2

  18. Generative Shape Reconstruction with Geometry-Guided Langevin Dynamics

    Mar 27, 2026Linus Härenstam-Nielsen, Dmitrii Pozdeev, Thomas Dagès +23D Reconstruction3D Shape Completion

    Technical University of Munich · Munich Center for Machine Learning

  19. From Synthetic Data to Real Restorations: Diffusion Model for Patient-specific Dental Crown Completion

    Mar 27, 2026Dávid Pukanec, Tibor Kubík, Michal Španěl3D Shape CompletionHealthcare

    Department of Computer Graphics and Multimedia, Brno University of Technology, Czechia

  20. OSCAR: Occupancy-based Shape Completion via Acoustic Neural Implicit Representations

    Mar 9, 2026Magdalena Wysocki, Kadir Burak Buldu, Miruna-Alexandra Gafencu +2Implicit Neural Representations3D Reconstruction

    Chair for Computer Aided Medical Procedures (CAMP) Technical University of Munich, Boltzmannstr. 3, 85748 Garching, Germany · Munich Center for Machine Learning (MCML), Munich, Germany · Konrad Zuse School of Excellence in Reliable AI (relAI), Germany

  21. RelaxFlow: Text-Driven Amodal 3D Generation

    Mar 5, 2026Jiayin Zhu, Guoji Fu, Xiaolu Liu +3Text-to-3D Generation3D Shape Completion

    National University of Singapore · Zhejiang University · University of Science and Technology of China

  22. LaS-Comp: Zero-shot 3D Completion with Latent-Spatial Consistency

    Feb 21, 2026Weilong Yan, Haipeng Li, Hao Xu +43D Shape Completion

    National University of Singapore · University of Electronic Science and Technology of China · The Chinese University of Hong Kong +1

  23. GENA3D: Generative Amodal 3D Modeling by Bridging 2D Priors and 3D Coherence

    Nov 26, 2025Junwei Zhou, Yu-Wing Tai3D ReconstructionGenerative Modeling

    Dartmouth College