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]

Biography

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.

News

Publications

	CrossSDF: 3D Reconstruction of Thin Structures From Cross-Sections Thomas Walker*, Salvatore Esposito*, Daniel Rebain, Amir Vaxman, Arno Onken, Changjian Li, Oisin Mac Aodha.   ArXiv Preprint, 2024. [Paper]
	PCDreamer: Point Cloud Completion Through Multi-view Diffusion Priors Guangshun Wei, Yuan Feng, Long Ma, Chen Wang, Yuanfeng Zhou, Changjian Li.   ArXiv Preprint, 2024. [Paper]
	VQ-SGen: A Vector Quantized Stroke Representation for Sketch Generation Jiawei Wang, Zhiming Cui, Changjian Li.   ArXiv Preprint, 2024. [Paper]
	DepthCues: Evaluating Monocular Depth Perception in Large Vision Models Duolikun Danier, Mehmet Aygün, Changjian Li, Hakan Bilen, Oisin Mac Aodha.   ArXiv Preprint, 2024. [Project Page]  [Paper]  [Code]
	Odd-One-Out: Anomaly Detection by Comparing with Neighbors Ankan Bhunia, Changjian Li, Hakan Bilen.   ArXiv Preprint, 2024. [Project Page]  [Paper]  [Code]
	CanFields: Consolidating 4D Dynamic Shapes from Raw Scans Miaowei Wang, Changjian Li, Amir Vaxman.   ArXiv Preprint, 2024. [Paper]
	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]
	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]
	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%) 🎉🎉🎉
	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]
	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]
	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]
	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]
	ToothInpaintor: Tooth Inpainting from Partial 3D Dental Model and 2D Panoramic Image Yuezhi Yang, Zhiming Cui, Changjian Li, Wenping Wang. ArXiv Preprint, 2022. [paper]
	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]

Team

Current Postdocs and Students

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)

Visiting and Intern Students

Kuankuan Cheng (Incoming MScR)	Jiawei Wang (UG) (Research Intern - remote)	Yi Yang (UG) (Research Intern)

Teaching

Invited Talks

Recent Professional Services

Editorial Posts

Committee Service

Reviewer Service

©Changjian Li.  Last update: August, 2024.