Yiheng Zhang 张一恒

I am an incoming PhD student at Intelligent Graphics Lab at Hong Kong University of Science and Technology (HKUST), supervised by Professor Yuan Liu. Now I am a research scientist intern at Tencent Games AI Center, collaborating with Professor Cheng Lin, Wenping Wang and Le Wan.

Prviously, I received my M. Eng. degree from National University of Singapore. I also worked as an research intern at Tsinghua University with Researcher Yuwang Wang and Academian Qionghai Dai. I am truly fortunate that my interest in computer graphics was sparked and nurtured under the guidance of Professor Mirela Ben-Chen at the Center for Graphics and Geometric Computing in Technion - Israel Institute of Technology.

Email  /  CV  /  Linkedin  /  Github

profile photo

News

[Feb 2026] M3DLayout & FlashMesh have been accepted to CVPR 2026!
[Feb 2026] I will join Hong Kong University of Science and Technology (HKUST) as a PhD student!
[Jan 2026] PartSAM has been accepted to ICLR 2026!

Research Experience

  • Sep. 2025 – Now :  Research Scientist Intern, Tencent Games AI Center.
  • June. 2025 – Now :  Remote Research Intern, Intelligent Graphics Lab (HKUST).
  • Oct. 2024 – Aug. 2025 :  Research Intern, Tsinghua University.
  • Jul. 2024 – Aug. 2024 :  Summer Research Intern, Center for Graphics and Geometric Computing (Technion) .
    • Tencent Games AI Center HKUST Tsinghua Technion

    Research

    My research interest lies in:

    • 3D Vision: Object & Scene-level Generation,
    • Computer Graphics: Geometry Processing and Geometric Learning (Operators & Quad),
    • Agent: Agentic Game/Movie Understanding & Design,
    • Robotics: Physics-based & Cognitive/Psychological Simulation.

    💡 I am always open to discussions and collaborations, feel free to contact me anytime!

    		QuadLink: Autoregressive Quad-Dominant Mesh Generation via Point-Relation Learning
    Under Review

    Yiheng Zhang, Zhe Zhu, Tingrui Shen, Zhuojiang Cai, Tianxiao Li, Zixing Zhao, Qiujie Dong, Zhiyang Dou, Jiepeng Wang, Le Wan, Yuwang Wang, Wengping Wang, Yuan Liu†, Cheng Lin†
    under review, 2026

    		M3DLayout: A Multi-Source Dataset of 3D Indoor Layouts and Structured Descriptions for 3D Generation
    CVPR 2026

    Yiheng Zhang*, Zhuojiang Cai*, Mingdao Wang*, Meitong Guo, Tianxiao Li, Li Lin, Yuwang Wang†
    Conference on Computer Vision and Pattern Recognition (CVPR), 2026
    project page / arXiv / Github

    		FlashMesh: Faster and Better Autoregressive Mesh Synthesis via Structured Speculation
    CVPR 2026

    Tingrui Shen*, Yiheng Zhang*, Chen Tang, Chuan Ping, Zixing Zhao, Le Wan, Yuwang Wang, Ronggang Wang, Shengfeng He†
    Conference on Computer Vision and Pattern Recognition (CVPR), 2026
    project page / arXiv / Github

    		PartSAM: A Scalable Promptable Part Segmentation Model Trained on Native 3D Data
    ICLR 2026

    Zhe Zhu, Le Wan, Rui Xu, Yiheng Zhang, Honghua Chen, Zhiyang Dou, Cheng Lin, Yuan Liu†, Mingqiang Wei†
    International Conference on Learning Representations (ICLR), 2026
    project page / arXiv / Github

    		LSS3D: Learnable Spatial Shifting for Consistent and High-Quality 3D Generation from Single-Image
    IEEE MMSP 2025

    Zhuojiang Cai*, Yiheng Zhang*, Meitong Guo, Mingdao Wang, Yuwang Wang†
    accepted by IEEE MMSP, 2025 (IF: 7.3)
    arXiv

    		Animation image transfer using CycleGAN
    ICCAID 2022

    Zhixun Liu*, Yiheng Zhang*, Xinyao Han, Wanting Zhou
    accepted by ICCAID, 2022

    Project
    		Tri2Quad: Geometry-Aware Triangle-to-Quad Mesh Conversion Operator
    Advisor: Professor Cheng Lin, Professor Yuan Liu, Professor Wenping Wang

    Github

    I Developed a high-performance triangle-to-quad dominant conversion operator, formulated as a maximum-weight matching problem on the triangle adjacency graph and solved with modified Blossom matchers for quad-dominant remeshing, which integrated rich geometric filters into candidate edge generation before optimization to improve solver efficiency, with globally consistent normals' ensurance. The operator has been the key data-curation step of my HybridGen SIGGRAPH paper and deployed in Tencent's production pipeline, achieving state-of-the-art quad quality compared with PyMeshLab, Blender's built-in remesher, and Hunyuan's ILP-based operator.

    		Hybrid Intrinsic–Extrinsic Spectral Operators for DiffusionNet
    Advisor: Professor Mirela Ben-Chen

    Github

    Replaced and complemented the standard Laplace-Beltrami operator in DiffusionNet with Steklov and elastic-basis operators, enabling the network to jointly encode intrinsic surface geometry and extrinsic embedding information. Demonstrated consistent improvements over the original DiffusionNet baseline on mesh segmentation, correspondence, and feature extraction benchmarks, showcasing a concrete case where classical geometry-processing operators and deep learning architectures are tightly integrated for better geometric understanding.

    Miscellaneous

    Horse My Chinese zodiac sign is 'Horse', and my favorite color is blue.

    My hobbies include playing soccerSoccer & badmintonBadminton & Chinese chessChinese Chess, fitnessFitness, and traveling all around the worldTravelling.