Changjian Li (李昌健) Assistant Professor Institute of Perception, Action and Behaviour (IPAB) School of Informatics University of Edinburgh Address: Room 1.10, Informatics Forum, 10 Crichton Street, Edinburgh, EH8 9AB, United Kingdom Email: Changjian.li@ed.ac.uk [CV]    [Google Scholar]    [Edinburgh PURE]

Short Bio

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.

Publications

# Corresponding author; * Equal contribution

	SNAF: Sparse-view CBCT Reconstruction with Neural Attenuation Fields Yu Fang, Lanzhuju Mei, Changjian Li, Yuan Liu, Wenping Wang, Zhiming Cui, Dinggang Shen. [ArXiv]
	ToothInpaintor: Tooth Inpainting from Partial 3D Dental Model and 2D Panoramic Image Yuezhi Yang, Zhiming Cui, Changjian Li, Wenping Wang. [ArXiv]
	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]
	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] Best Paper Honorable Mention Award
	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]
	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]
	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]
	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
	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
	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]
	RigidFusion: RGB-D Scene Reconstruction with Rigidly-moving Objects Yushiang Wong, Changjian Li, Matthias Niessner, Niloy Mitra.     Eurographics (EG) , 2021. [Project Page]  [Paper]
	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]
	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]
	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
	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.
	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.
	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]
	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]

Research Experiences

Oct. 2021 - July 2022	Starting Researcher	Dr. Adrien Bousseau
Oct. 2019 - Sept. 2021	Postdoctoral Research Associate	Prof. Niloy Mitra
Feb. 2016  - Aug. 2018	Research Intern (multiple times), Microsoft Research Asia	Dr. Hao Pan and Dr. Yang Liu
Feb. 2014  - May 2014	Research Assistant, The University of Hong Kong	Prof. Wenping Wang and Dr. Hao Pan

Invited Talks

Keynote Speaker at DIRA Workshop, ECCV2022, Tel Aviv     High-quality CAD modeling via Rough Sketching.	Oct. 2022
Invited workshop speaker at GDC, Qingdao, China     Free2CAD: Parsing Freehand Drawings into CAD Commands.	Aug. 2022
School of Software, Tsinghua University, China     Creating, Analyzing and Processing 3D Data: Applications to interactive 3D modeling and to medical imaging.	Dec. 2021
School of Informatics, University of Edinburgh, UK     Creating, Analyzing and Processing 3D Data: Applications to interactive 3D modeling and to medical imaging.	Oct. 2021
Stanford Human-Computer Interaction group, Stanford     Sketch2CAD: Sequential CAD Modeling by Sketching in Context.	Jan. 2021
AI Lab Sharing Session, Autodesk     Sketch2CAD: Sequential CAD Modeling by Sketching in Context.	Jan. 2021
Software College, Shandong University, Jinan     Sketch-based Freeform Surface Modeling.	Oct. 2019
iDDA, The Chinese University of Hong Kong, Shenzhen     SketchAShape: Sketch-based Freeform Surface Modeling.	Jul. 2019
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
DGP Lab, University of Toronto     BendSketch: Modeling Freeform Surfaces Through 2D Sketching.	Sept. 2018
GAMES: Graphics And Mixed Environment Seminar, China     Robust Flow-Guided Neural Prediction for Sketch-Based Freeform Surface Modeling.	Nov. 2018

Conference Program Committees

ACM SIGGRAPH Asia	2023
ACM SIGGRAPH Poster	2023
Geometry Design and Computing (GDC)	2022, 2023

Reviewer Service

ACM Transaction on Graphics (TOG)	2022
ACM SIGGRAPH	2021, 2022
ACM SIGGRAPH Asia	2015, 2019-2022
Conference on Computer Vision and Pattern Recognition (CVPR)	2021
International Conference on Computer Vision (ICCV)	2021
IEEE Transactions on Visualization & Computer Graphics (TVCG)	2020, 2021
Eurographics (EG)	2019,2021,2022
ACM SIGCHI	2022
ACM Symposium on User Interface Software and Technology (UIST)	2020
Computer-Aided Design (CAD)	2022
Computer Graphics Forum (CGF)	2019
Journal of Computer Science and Technology (JCST)	2019
Pacific Graphics (PG)	2018
Eurographics Symposium on Geometry Processing (SGP)	2018
International Conference on Computer-Aided Design and Computer Graphics (CAD&CG)	2015
Geometry Design and Computing (GDC)	2022
Sensors	2020

Teaching

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

©Changjian Li.  Last update: March, 2023.