Changjian Li (李昌健)
Assistant Professor
Institute of Perception, Action and Behaviour (IPAB) |
I am an Assistant Professor in the School of Informatics at the University of Edinburgh. I have a board range of research interests in 3D Shape Creation and Analysis with applications in Sketch-based Modeling, Shape Reconstruction and Analysis from Point Clouds, and Medical Image Processing and Modeling. For sketch-based modeling (my representative line of research), we have recently developed two systems for easier CAD modeling by combining the advanced neural network and traditional optimization, where we translate intuitive sketches into CAD programs that greatly facilitate the downstream applications.
Before joining University of Edinburgh, I worked at Inria as a Starting Researcher working with Dr. Adrien Bousseau and did my postdoc in the Smart Geometry Processing Group at University College London (UCL) working with Prof. Niloy Mitra. I got my Ph.D. degree from the University of Hong Kong in 2019 supervised by Prof. Wenping Wang and got my Bachelor degree from Shandong University in 2014.
Accepting Students: I am looking for highly motivated students, feel free to drop me an email with your CV.
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DiffCSG: Differentiable CSG via Rasterization
Haocheng Yuan, Adrien Bousseau, Hao Pan, Chengquan Zhang, Niloy Mitra, Changjian Li. ACM Transactions on Graphics (SIGGRAPH Asia Conference Proceedings)- 2024. [Project page] [Paper] [Code]   [Video] |
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Geometry-Aware Attenuation Field Learning for Sparse-View CBCT Reconstruction
Zhentao Liu, Yu Fang, Changjian Li, Han Wu, Yuan Liu, Dinggang Shen, Zhiming Cui. IEEE Transactions on Medical Imaging (TMI), 2024. [Project page] [Paper] [Code] [DOI] |
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Odd-One-Out: Anomaly Detection by Comparing with Neighbors
Ankan Bhunia, Changjian Li, Hakan Bilen. ArXiv Preprint, 2024. [Project Page] [Paper] [Code] |
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Canonical Consolidation Fields: Reconstructing Dynamic Shapes from Point Clouds
Miaowei Wang, Changjian Li, Amir Vaxman. ArXiv Preprint, 2024. [Paper] |
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CADTalk: An Algorithm and Benchmark for Semantic Commenting of CAD Programs
Haocheng Yuan, Jing Xu, Hao Pan, Adrien Bousseau, Niloy Mitra, Changjian Li. IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2024. [Project page] [Paper] [Code] [Dataset] [Video]
Highlight (top 10%) 🎉🎉🎉 |
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ContextSeg: Sketch Semantic Segmentation by Querying the Context with Attention
Jiawei Wang, Changjian Li. IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2024. [Project page] [Paper] [Code,Data] [Video] |
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Looking 3D: Anomaly Detection with 2D-3D Alignment
Ankan Bhunia, Changjian Li, Hakan Bilen. IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR), 2024. [Project page] [Paper] [Code,Data] [Video] |
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iPUNet: Iterative Cross Field Guided Point Cloud Upsampling
Guangshun Wei, Hao Pan, Shaojie Zhuang, Yuanfeng Zhou, Changjian Li. IEEE Visualization and Computer Graphics (TVCG), 2023. [Project page] [Paper] [Code,Data] [DOI] |
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SNAF: Sparse-view CBCT Reconstruction with Neural Attenuation Fields
Yu Fang, Lanzhuju Mei, Changjian Li, Yuan Liu, Wenping Wang, Zhiming Cui, Dinggang Shen. ArXiv Preprint, 2022. [Paper] |
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ToothInpaintor: Tooth Inpainting from Partial 3D Dental Model and 2D Panoramic Image
Yuezhi Yang, Zhiming Cui, Changjian Li, Wenping Wang. ArXiv Preprint, 2022. [paper] |
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CAD2Sketch: Generating Concept Sketches from CAD Sequences
Felix Hähnlein, Changjian Li, Niloy Mitra, Adrien Bousseau. ACM Transaction on Graphics, 41(6), 2022, proceedings of SIGGRAPH Asia 2022. [Project page] [Paper] [Code] [DOI] |
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Free2CAD: Parsing Freehand Drawings into CAD Commands
Changjian Li, Hao Pan, Adrien Bousseau, Niloy Mitra. ACM Transaction on Graphics, 41(4), 2022, proceedings of SIGGRAPH 2022. [Project page] [Paper] [Code,Data] [Supl] [DOI]
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VertNet: Accurate Vertebra Localization and Identification Network from CT Images
Zhiming Cui, Changjian Li, Lei Yang, Chunfeng Lian, Feng Shi, Wenping Wang, Dijia Wu, Dinggang Shen. International Conference on Medical Image Computing and Computer Assisted Intervention (MICCAI), 2021. [Project Page] [Paper] |
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Structure-Driven Unsupervised Domain Adaptation for Cross-Modality Cardiac Segmentation
Zhiming Cui, Changjian Li, Zhixu Du, Nenglun Chen, Guodong Wei, Runnan Chen, Lei Yang, Wenping Wang. IEEE Transactions on Medical Imaging (TMI), 2021. [Project Page] [Paper] [Code] |
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ScaffoldGAN: Synthesis of Scaffold Materials based on Generative Adversarial Networks
Hui Zhang, Lei Yang, Changjian Li, Bojian Wu, Wenping Wang. Computer-Aided Design (CAD), 2021. [Paper] |
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Hierarchical Morphology-Guided Tooth Instance Segmentation from CBCT Images
Zhiming Cui*, Bojun Zhang*, Chunfeng Lian, Changjian Li#, Lei Yang, Min Zhu#, Wenping Wang, Dinggang Shen#. Information Processing in Medical Imaging (IPMI), 2021. [Project Page] [Paper]
Oral Presentation |
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Point2Skeleton: Learning Skeletal Representations from Point Clouds
Cheng Lin, Changjian Li#, Yuan Liu, Nenglun Chen, Yi-King Choi, Wenping Wang#. IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2021. [Project Page] [Paper] [Code]
Oral Presentation, Best Paper Candidate |
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TSegNet: an Efficient and Accurate Tooth Segmentation Network on 3D Dental Model
Zhiming Cui, Changjian Li, Nenglun Chen, Guodong Wei, Runnan Chen, Yuanfeng Zhou, Dinggang Shen, Wenping Wang. Medical Image Analysis (MIA) , 2021 [Project Page] [Paper] [Code] |
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RigidFusion: RGB-D Scene Reconstruction with Rigidly-moving Objects
Yushiang Wong, Changjian Li, Matthias Niessner, Niloy Mitra.    Eurographics (EG) , 2021. [Project Page] [Paper] |
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SEG-MAT: 3D Shape Segmentation Using Medial Axis Transform
Cheng Lin, Lingjie Liu, Changjian Li, Leif Kobbelt, Bin Wang, Shiqing Xin, Wenping Wang. IEEE Visualization and Computer Graphics (TVCG), 2020 [Project Page] [arXiv Preprint] |
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Sketch2CAD: Sequential CAD Modeling by Sketching in Context
Changjian Li, Hao Pan, Adrien Bousseau, Niloy Mitra. ACM Trans. Graph., 39(6), 2020, proceedings of SIGGRAPH Asia 2020 [Project page] [Paper] [Code,Data] [Supl] [DOI] |
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Floorplan-Jigsaw: Jointly Estimating Scene Layout and Aligning Partial Scans
Cheng Lin, Changjian Li, Wenping Wang. International Conference on Computer Vision (ICCV), 2019 [Project Page] [arXiv] [Paper] [Supl]
Our poster session is highlighted in the 'Computer Vision News, The magazine of the algorithm community': ICCV Daily 2019, Friday |
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ToothNet: Automatic Tooth Instance Segmentation and Identification from Cone Beam CT Images
Zhiming Cui, Changjian Li, Wenping Wang. IEEE Conference on Computer Vision and Pattern Recognition (CVPR), 2019. [Project page] [Paper]
Our poster session is highlighted in the technical news of IEEE Computer Society: Poster Sessions Provoke Deep Discussions at the 2019 Conference on CVPR. |
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Robust Flow-Guided Neural Prediction for Sketch-Based Freeform Surface Modeling
Changjian Li, Hao Pan, Yang Liu, Xin Tong, Alla Sheffer, Wenping Wang. ACM Trans. Graph., 37(6), 2018, proceedings of SIGGRAPH Asia 2018 [Project page] [Paper] [Code,Data] [Supl] [DOI]
Our Teaser image was selected as the cover image of Transaction on Graphics of year 2018. And it also was selected by ACM SIGGRAPH Asia for technical paper press release as research highlights. |
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BendSketch: Modeling Freeform Surfaces Through 2D Sketching
Changjian Li, Hao Pan, Yang Liu, Xin Tong, Alla Sheffer, Wenping Wang. ACM Trans. Graph., 36(4), 2017, proceedings of SIGGRAPH 2017 [Project page] [Paper] [Data] |
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Flow Aligned Surfacing of Curve Networks
Hao Pan, Yang Liu, Alla Sheffer, Nicholas Vining, Changjian Li, Wenping Wang. ACM Trans. Graph., 36(4), 2015, proceedings of SIGGRAPH 2015 [Project page] [Paper] [Data] |
Duolikun Danier (Postdoc) (with Oisin and Hakan) |
Haocheng Yuan (PhD) |
Yue Ruan (PhD) |
Lei Zhong (PhD) |
Ankan Bhunia (PhD) (with Hakan, secondary) |
Salvatore Esposito (PhD) (with Arno, Oisin, secondary) |
Kuankuan Cheng (Incoming MScR) |
Jiawei Wang (UG) (Research Intern - remote) |
Yi Yang (UG) (Research Intern) |
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MScR: |
Mingjun Yang, 2023.09-2024.08. Now: |
MSc: |
Longbin Ji, 2024.04-2024.09. Now: Intern at Tencent AI Lab |
Prakash, 2024.04-2024.09. Now: Researcher at Canon Medical Research Europe |
UG: |
Jing Xu, 2023.09-2023.12. Now: |
Shuyuan Zhang, 2023.06-2024.05. Now: MSc at Imperial College London |
2023-2024(S2) | INFR11140 - Image and Vision Computing | UoE Informatics |
2023-2024(S1) | INFR09051 - Informatics Large Practical | UoE Informatics |
2020-2021(S2) | COMP0119 - Acquisition and Processig of 3D Geometry | UCL CS |
2017-2018(S2) | COMP2396 - Object Oriented Programming and Java | HKU CS |
2016-2017(S1) | ENGG1111 - Computer Programming and Applications | HKU CS |
2015-2016(S1) | COMP7507 - Visualization and Visual Analytics | HKU CS |
2014-2015(S1) | ENGG1111 - Computer Programming and Applications | HKU CS |
GAMES: Graphics And Mixed Environment Seminar, China CADTalk: An Algorithm and Benchmark for Semantic Commenting of CAD Programs. |
Jun. 2024 |
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Keynote Speaker at DIRA Workshop, ECCV2022, Tel Aviv High-quality CAD modeling via Rough Sketching. |
Oct. 2022 |
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Invited workshop speaker at GDC, Qingdao, China Free2CAD: Parsing Freehand Drawings into CAD Commands. |
Aug. 2022 |
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School of Software, Tsinghua University, China Creating, Analyzing and Processing 3D Data: Applications to interactive 3D modeling and to medical imaging. |
Dec. 2021 |
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School of Informatics, University of Edinburgh, UK Creating, Analyzing and Processing 3D Data: Applications to interactive 3D modeling and to medical imaging. |
Oct. 2021 |
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Stanford Human-Computer Interaction group, Stanford Sketch2CAD: Sequential CAD Modeling by Sketching in Context. |
Jan. 2021 |
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AI Lab Sharing Session, Autodesk Sketch2CAD: Sequential CAD Modeling by Sketching in Context. |
Jan. 2021 |
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Software College, Shandong University, Jinan Sketch-based Freeform Surface Modeling. |
Oct. 2019 |
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iDDA, The Chinese University of Hong Kong, Shenzhen SketchAShape: Sketch-based Freeform Surface Modeling. |
Jul. 2019 |
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IRC Lab, Shandong University Robust Flow-Guided Neural Prediction for Sketch-Based Freeform Surface Modeling. Automatic Tooth Instance Segmentation and Identification from CBCT Images. |
Mar. 2019 |
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DGP Lab, University of Toronto BendSketch: Modeling Freeform Surfaces Through 2D Sketching. |
Sept. 2018 |
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GAMES: Graphics And Mixed Environment Seminar, China Robust Flow-Guided Neural Prediction for Sketch-Based Freeform Surface Modeling. |
Nov. 2018 |
• Associate Editor - IEEE TVCG (2024-present) |
• SIGGRAPH Asia |
• Technical Program Committee - 2023 |
• SIGGRAPH |
• Poster Jury Committee - 2023, 2024 |
• EuroGraphics |
• International Program Committee (IPC) - 2025 |
• State-of-the-art-report IPC - 2025 |
• Geometry Design and Computing (GDC) |
• Technical Program Committee 2022, 2023 |
ACM Transaction on Graphics (TOG) | 2022 |
ACM SIGGRAPH | 2021-2024 |
ACM SIGGRAPH Asia | 2015, 2019-2023 |
Conference on Computer Vision and Pattern Recognition (CVPR) | 2021, 2023, 2024 |
International Conference on Computer Vision (ICCV) | 2021 |
IEEE Transactions on Visualization & Computer Graphics (TVCG) | 2020-2024 |
Eurographics (EG) | 2019-2023,2025 |
ACM SIGCHI | 2020, 2023 |
AAAI | 2024 |
ACM Symposium on User Interface Software and Technology (UIST) | 2020 |
Computer-Aided Design (CAD) | 2019, 2022-2023 |
Computer Graphics Forum (CGF) | 2019 |
Journal of Computer Science and Technology (JCST) | 2019 |
Pacific Graphics (PG) | 2018, 2023, 2024 |
Eurographics Symposium on Geometry Processing (SGP) | 2018 |
International Conference on Computer-Aided Design and Computer Graphics (CAD&CG) | 2015, 2019 |
Geometry Design and Computing (GDC) | 2022, 2023 |
IEEE Transactions on Image Processing (TIP) | 2023 |
Journal of Computer Science and Technology (JCST) | 2023 |
The Visual Computer (TVCJ) | 2023 |