photo

Kun Xu (Kun Xu)

I am an associate professor in the Department of Computer Science and Technology of Tsinghua University. I received my doctor and bachelor degree from Department of Computer Science and Technology, Tsinghua University in 2009 and in 2005, respectively.

My research interests include: real-time rendering, image/video editing, and 3D scene synthesis.

My contact info:
Email: xukun (at) tsinghua.edu.cn
Office: East Main Building 9-213, Tsinghua Univeristy, Beijing, P.R. China, P.C.: 100084

Academic Services

Awards

Publications

2021
Ensemble Denoising for Monte Carlo Renderings

Shaokun Zheng, Fengshi Zheng, Kun Xu, Ling-Qi Yan

ACM Transactions on Graphics 40(6), 274:1 – 274:17, 2021 (SIGGRAPH Asia 2021)

@article{Zheng:2021:EnsembleDenoising,
author    = {Zheng, Shaokun and Zheng, Fengshi and Xu, Kun and Yan, Ling-Qi},
title     = {Ensemble Denoising for Monte Carlo Renderings},
journal   = {ACM Transactions on Graphics},
volume    = {40},
number    = {6},
year      = {2021},
articleno = {274},
numpages = {17},
pages = {274:1--274:17}
}
Fast and Accurate Spherical Harmonics Products

Hanggao Xin, Zhiqian Zhou, Di An, Ling-Qi Yan, Kun Xu, Shi-Min Hu, and Shing-Tung Yau

ACM Transactions on Graphics 40(6), 280:1-280:14, 2021 (SIGGRAPH Asia 2021)

@article{Xin:2021:SHProducts,
author    = {Xin, Hanggao and Zhou, Zhiqian and An, Di and Yan, Ling-Qi and Xu, Kun and Hu, Shi-Min and Yau, Shing-Tung},
title     = {Fast and Accurate Spherical Harmonics Products},
journal   = {ACM Transactions on Graphics},
volume    = {40},
number    = {6},
year      = {2021},
articleno = {280},
numpages = {14},
pages = {280:1--280:14}
}
Video Recoloring via Spatial-Temporal Geometric Palettes

Zheng-Jun Du, Kai-Xiang Lei, Kun Xu, Jianchao Tan, Yotam Gingold

ACM Transactions on Graphics, 40(4), 150:1-150:16,2021 (SIGGRAPH 2021)

@article{Du:2021:VRS,
author    = {Du, Zheng-Jun and Lei, Kai-Xiang and Xu, Kun and Tan, Jianchao and Gingold, Yotam},
title     = {Video Recoloring via Spatial-Temporal Geometric Palettes},
journal   = {ACM Transactions on Graphics},
volume    = {40},
number    = {4},
year      = {2021},
month     = aug,
articleno = {150},
numpages = {16},
keywords = {free-viewpoint, neural rendering, relighting},
pages = {150:1--150:16},
keywords  = {Palette, Color, Grading, Painting, Image, Video, Spatial-temporal, Recoloring, Layer, RGB}
}
Hierarchical Layout-Aware Graph Convolutional Network for Unified Aesthetics Assessment

Dongyu She, Yu-Kun Lai, Gaoxiong Yi, Kun Xu

In Proceedings of IEEE CVPR 2021.

@InProceedings{She:2021:AestheticsAssessment,
    author    = {She, Dongyu and Lai, Yu-Kun and Yi, Gaoxiong and Xu, Kun},
    title     = {Hierarchical Layout-Aware Graph Convolutional Network for Unified Aesthetics Assessment},
    booktitle = {Proceedings of the IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)},
    month     = {June},
    year      = {2021},
    pages     = {8475-8484}
}
2020
Deferred Neural Lighting: Free-viewpoint Relighting from Unstructured Photographs

Duan Gao, Guojun Chen, Yue Dong, Pieter Peers, Kun Xu, Xin Tong

ACM Transactions on Graphics, 39(6), 258:1-258:15,2020 (SIGGRAPH Asia 2020)

@article{Gao2020DeferredNeuralLighting,
author = {Gao, Duan and Chen, Guojun and Dong, Yue and Peers, Pieter and Xu, Kun and Tong, Xin},
title = {Deferred Neural Lighting: Free-Viewpoint Relighting from Unstructured Photographs},
year = {2020},
volume = {39},
number = {6},
doi = {10.1145/3414685.3417767},
journal = {ACM Transactions on Graphics},
month = nov,
articleno = {258},
numpages = {15},
keywords = {free-viewpoint, neural rendering, relighting},
pages = {258:1--258:15},
}
Lightweight Bilateral Convolutional Neural Networks for Interactive Single-bounce Diffuse Indirect Illumination

Hanggao Xin, Shaokun Zheng, Kun Xu, Ling-Qi Yan

IEEE Transactions on Visualization and Computer Graphics, 2020, accepted.

@ARTICLE{Xin2020BilateralCNN,
  author={Xin, Hanggao and Zheng, Shaokun and Xu, Kun and Yan, Ling-Qi},
  journal={IEEE Transactions on Visualization and Computer Graphics}, 
  title={Lightweight Bilateral Convolutional Neural Networks for Interactive Single-bounce Diffuse Indirect Illumination}, 
  year={2020},
  volume={},
  number={},
  pages={1-1},
  doi={10.1109/TVCG.2020.3023129}
}

2019
Adversarial Monte Carlo denoising with conditioned auxiliary feature modulation

Bing Xu, Junfei Zhang, Rui Wang, Kun Xu, Yong-Liang Yang, Chuan Li, Rui Tang

ACM Transactions on Graphics, 38(6), 224:1--224:12, 2019. (SIGGRAPH Asia 2019)

@article{Xu2019AdversarialMCDenoising,
 author = {Bing Xu and Junfei Zhang and Rui Wang and Kun Xu and Yong-Liang Yang and Chuan Li and Rui Tang},
 title = {Adversarial Monte Carlo Denoising with Conditioned Auxiliary Feature},
 journal = {ACM Transactions on Graphics},
 volume = {38},
 number = {6},
 year = {2019},
 pages = {224:1--224:12},
 articleno = {224},
 numpages = {12},
}
An Improved Geometric Approach for Palette‐based Image Decomposition and Recoloring

Yili Wang, Yifan Liu, Kun Xu

Computer Graphics Forum 38(7), 11-22, 2019. (PG 2019)

@article{Wang2019ImprovedPalette,
author = {Wang, Yili and Liu, Yifan and Xu, Kun},
title = {An Improved Geometric Approach for Palette-based Image Decomposition and Recoloring},
journal = {Computer Graphics Forum},
volume = {38},
number = {7},
pages = {11--22},
year = {2019}
}
Adaptive BRDF-Aware Multiple Importance Sampling of Many Lights

Yifan Liu, Kun Xu, Ling-Qi Yan

Computer Graphics Forum 38(4), 123-133, 2019. (EGSR 2019)

@article{Liu2019BRDFOrientedSampling,
author = {Liu, Yifan and Xu, Kun and Yan, Ling-Qi},
title = {Adaptive BRDF-Oriented Multiple Importance Sampling of Many Lights},
journal = {Computer Graphics Forum},
volume = {38},
number = {4},
pages = {123--133},
year = {2019}
}
Deep Inverse Rendering for High-resolution SVBRDF Estimation from an Arbitrary Number of Images

Duan Gao, Xiao Li, Yue Dong, Pieter Peers, Kun Xu, Xin Tong

ACM Transactions on Graphics, 38(4), 134:1-134:15, 2019. (SIGGRAPH 2019)

@article{Gao2019EstimationSVBRDF,
 author = {Gao, Duan and Li, Xiao and Dong, Yue and Peers, Pieter and Xu, Kun and Tong, Xin},
 title = {Deep Inverse Rendering for High-resolution SVBRDF Estimation from an Arbitrary Number of Images},
 journal = {ACM Transactions on Graphics},
 issue_date = {July 2019},
 volume = {38},
 number = {4},
 month = jul,
 year = {2019},
 issn = {0730-0301},
 pages = {134:1--134:15},
 articleno = {134},
 numpages = {15},
 doi = {10.1145/3306346.3323042},
}
Two-Layer QR Codes

Tailing Yuan, Yili Wang, Kun Xu, Ralph R. Martin, Shi-Min Hu

IEEE Transactions on Image Processing, 28(9):4413-4428,2019.

@article{Yuan19TwoLayerQRCodes,
  author = {Tailing Yuan and Yili Wang and Kun Xu and Ralph R. Martin and Shi-Min Hu},
  title = {Two-Layer QR Codes},
  journal = {IEEE Transactions on Image Processing},
  volume = {28},
  number = {9},
  year = {2019},
  pages = {4413--4428},
}
A Large Chinese Text Dataset in the Wild

Tai-Ling Yuan, Zhe Zhu, Kun Xu, Cheng-Jun Li, Tai-Jiang Mu, Shi-Min Hu

Journal of Computer Science and Technology, 34(3), 509-521, 2019.

@article{Yuan19CTW,
  author = {Tai-Ling Yuan and Zhe Zhu and Kun Xu and Cheng-Jun Li and Tai-Jiang Mu and Shi-Min Hu},
  title = {A Large Chinese Text Dataset in the Wild},
  journal = {Journal of Computer Science and Technology},
  volume = {34},
  number = {3},
  year = {2019},
  pages = {509--521},
}

2018
Real-time High-fidelity Surface Flow Simulation

Bo Ren, Tailing Yuan, Chenfeng Li, Kun Xu, and Shi-Min Hu

IEEE Transactions on Visualization and Computer Graphics, 24(8), 2411-2423, 2018.

@article{Ren18SurfaceFlow,
  author = {Bo Ren and Tailing Yuan and Chenfeng Li and Kun Xu and Shi-Min Hu},
  title = {Real-time High-fidelity Surface Flow Simulation},
  journal = {IEEE Transactions on Visualization and Computer Graphics},
  volume = {24},
  number = {8},
  year = {2018},
  pages = {2411--2423},
}
Computational Design of Transforming Pop-up Books

Nan Xiao, Zhe Zhu, Ralph R. Martin, Kun Xu, Jia-Ming Lu, and Shi-Min Hu

ACM Transactions on Graphics, 37(1), 8:1--8:14, 2018. (presented at SIGGRAPH 2018)

@article{Xiao18TransformPopup,
  author = {Xiao, Nan and Zhu, Zhe and Martin, Ralph R. and Xu, Kun and Lu, Jia-Ming and Hu, Shi-Min},
  title = {Computational Design of Transforming Pop-up Books},
  journal = {ACM Transactions on Graphics},
  volume = {37},
  number = {1},
  year = {2018},
  pages = {8:1--8:14},
}

2017
A survey of image synthesis and editing with generative adversarial networks

Xian Wu, Kun Xu, and Peter Hall

Tsinghua Science and Technology, 22(6), 660-674, 2017.

@article{Wu17GANSurvey,
  author = {Xian Wu and Kun Xu and Peter Hall},
  title = {A survey of image synthesis and editing with generative adversarial networks},
  journal = {Tsinghua Science and Technology},
  volume = {22},
  number = {6},
  year = {2017},
  pages = {660--674},
}
Static Scene Illumination Estimation from Video with Applications

Bin Liu, Kun Xu, and Ralph R. Martin

Journal of Computer Science and Technology, 32(3), 430-442, 2017.

@article{Liu17VideoInsert,
  author = {Bin Liu and Kun Xu and Ralph Martin},
  title = {Static Scene Illumination Estimation from Video with Applications},
  journal = {Journal of Computer Science and Technology},
  volume = {32},
  number = {3},
  year = {2017},
  pages = {430--442},
}

2016
Efficient, Edge-Aware, Combined Color Quantization and Dithering

Hao-Zhi Huang, Kun Xu, Ralph R. Martin, Fei-Yue Huang, and Shi-Min Hu

IEEE Transactions on Image Processing, 25(3), 1152-1162, 2016.

@article{Huang16ColorQuantization,
  author = {Hao-Zhi Huang and Kun Xu and Ralph R. Martin and Fei-Yue Huang and Shi-Min Hu},
  title = {Efficient, Edge-Aware, Combined Color Quantization and Dithering},
  journal = {IEEE Transactions on Image Processing},
  volume = {25},
  number = {3},
  year = {2016},
  pages = {1152--1162},
}
Faithful Completion of Images of Scenic Landmarks using Internet Images

Zhe Zhu, Hao-Zhi Huang, Zhi-Peng Tan, Kun Xu, and Shi-Min Hu

IEEE Transactions on Visualization and Computer Graphics, 22(8), 1945 - 1958, 2016.

@article{Zhu16FaithfulCompletion,
  author = {Zhu, Zhe and Huang, Hao-Zhi and Tan, Zhi-Peng and Xu, Kun and Hu, Shi-Min},
  title = {Faithful Completion of Images of Scenic Landmarks using Internet Images},
  journal = {IEEE Transactions on Visualization and Computer Graphics},
  volume = {22},
  number = {8},
  year = {2016},
  pages = {1945--1958},
}

2015
Magic Decorator: Automatic Material Suggestion for Indoor Digital Scenes

Kang Chen, Kun Xu, Yizhou Yu, Tian-Yi Wang, Shi-Min Hu

ACM Transactions on Graphics, 34(6), 232:1 - 232:11, 2015. (SIGGRAPH Asia 2015)

@article{Chen15MagicDecorator,
  author = {Chen, Kang and Xu, Kun and Yu, Yizhou and Wang, Tian-Yi and Hu, Shi-Min},
  title = {Magic Decorator: Automatic Material Suggestion for Indoor Digital Scenes},
  journal = {ACM Transactions on Graphics},
  volume = {34},
  number = {6},
  year = {2015},
  pages = {232:1--232:11},
}

2014
A Practical Algorithm for Rendering Interreflections with All-frequency BRDFs

Kun Xu, Yan-Pei Cao, Li-Qian Ma, Zhao Dong, Rui Wang, Shi-Min Hu

ACM Transactions on Graphics, 33(1), 10:1 - 10:16, 2014. (presented at SIGGRAPH 2014)

@article{Xu14Interreflection,
  author = {Xu, Kun and Cao, Yan-Pei and Ma, Li-Qian and Dong, Zhao and Wang, Rui and Hu, Shi-Min},
  title = {A Practical Algorithm for Rendering Interreflections with All-frequency BRDFs},
  journal = {ACM Transactions on Graphics},
  volume = {33},
  number = {1},
  year = {2014},
  pages = {10:1--10:16},
}

2013
Anisotropic Spherical Gaussians

Kun Xu, Wei-Lun Sun, Zhao Dong, Dan-Yong Zhao, Run-Dong Wu, Shi-Min Hu

ACM Transactions on Graphics 32(6), 209:1 - 209:11, 2013. (SIGGRAPH Asia 2013).

@article{Xu13AnisotropicSG,
  author = {Kun Xu and Wei-Lun Sun and Zhao Dong and Dan-Yong Zhao and Run-Dong Wu and Shi-Min Hu},
  title = {Anisotropic Spherical Gaussians},
  journal = {ACM Transactions on Graphics},
  volume = {32},
  number = {6},
  year = {2013},
  pages = {209:1--209:11},
}
Inverse Image Editing: Recovering a Semantic Editing History from a Before-and-After Image Pair

Shi-Min Hu, Kun Xu, Li-Qian Ma, Bin Liu, Bi-Ye Jiang, Jue Wang

ACM Transactions on Graphics 32(6), 194:1 - 194:11, 2013. (SIGGRAPH Asia 2013).

@article{Hu13InverseImageEditing,
  author = {Shi-Min Hu and Kun Xu and Li-Qian Ma and Bin Liu and Bi-Ye Jiang and Jue Wang},
  title = {Inverse Image Editing: Recovering a Semantic Editing History from a Before-and-After Image Pair},
  journal = {ACM Transactions on Graphics},
  volume = {32},
  number = {6},
  year = {2013},
  pages = {194:1--194:11},
}
Change Blindness Images

Li-Qian Ma, Kun Xu, Tien-Tsin Wong, Bi-Ye Jiang, Shi-Min Hu

IEEE Transactions on Visualization and Computer Graphics 19(11),1808-1819, 2013.

@article{Ma13ChangeBlindness,
  author = {Li-Qian Ma and Kun Xu and Tien-Tsin Wong and Bi-Ye Jiang and Shi-Min Hu},
  title = {Change Blindness Images},
  journal = {IEEE Transactions on Visualization and Computer Graphics},
  volume = {19},
  number = {11},
  year = {2013},
  pages = {1808--1819},
}
Sketch2Scene: Sketch-based Co-retrieval and Co-placement of 3D Models

Kun Xu, Kang Chen, Hongbo Fu, Wei-Lun Sun, Shi-Min Hu

ACM Transactions on Graphics 32(4), 123:1-123:12, 2013. (SIGGRAPH 2013).

@article{Xu12Sketch2scene,
  author = {Kun Xu and Kang Chen and Hongbo Fu and Wei-Lun Sun and Shi-Min Hu},
  title = {Sketch2Scene: sketch-based co-retrieval and co-placement of 3D models},
  journal = {ACM Transactions on Graphics},
  volume = {32},
  number = {4},
  year = {2013},
  pages = {123:1--123:12},
}

2012
Accurate Translucent Material Rendering under Spherical Gaussian Lights

Ling-Qi Yan, Yahan Zhou, Kun Xu, Rui Wang

Computer Graphics Forum 31(7), 2267–2276, 2012. (Pacific Graphics 2012)

@article{Yan12GaussianTranslucent,
  author = {Ling-Qi Yan and Yahan Zhou and Kun Xu and Rui Wang},
  title = {Accurate Translucent Material Rendering under Spherical Gaussian Lights},
  journal = {Computer Graphics Forum},
  volume = {31},
  number = {7},
  year = {2012},
  pages = {2267-–2276},
}
Efficient Antialiased Edit Propagation for Images and Videos

Li-Qian Ma, Kun Xu

Computer & Graphics 36(8), 1005–1012, 2012.

@article{Ma12AntialiasedEditPropagation,
  author = {Li-Qian Ma and Kun Xu},
  title = {Efficient Antialiased Edit Propagation for Images and Videos},
  journal = {Computer and Graphics},
  volume = {36},
  number = {8},
  year = {2012},
  pages = {1005–-1012},
}

2011
Interactive Hair Rendering and Appearance Editing under Environment Lighting

Kun Xu, Li-Qian Ma, Bo Ren, Rui Wang, Shi-Min Hu

ACM Transactions on Graphics 30(6), 173:1-173:10, 2011. (SIGGRAPH Asia 2011)

@article{Xu11sigasia,
  author = {Kun Xu and Li-Qian Ma and Bo Ren and Rui Wang and Shi-Min Hu},
  title = {Interactive Hair Rendering and Appearance Editing under Environment Lighting},
  journal = {ACM Transactions on Graphics},
  volume = {30},
  number = {6},
  year = {2011},
  pages = {173:1--173:10},
  articleno = {173},
}

2009
Efficient Affinity-based Edit Propagation using K-D Tree

Kun Xu, Yong Li, Tao Ju, Shi-Min Hu, Tian-Qiang Liu

ACM Transactions on Graphics 28(5), 118:1-118:6, 2009. (SIGGRAPH Asia 2009)

@article{Xu09sigasia,
  author = {Kun Xu and Yong Li and Tao Ju and Shi-Min Hu and Tian-Qiang Liu},
  title = {Efficient Affinity-based Edit Propagation using K-D Tree},
  journal = {ACM Transactions on Graphics},
  volume = {28},
  number = {5},
  year = {2009},
  pages = {118:1--118:6},
  articleno = {118},
}
Edit Propagation on Bidirectional Texture Functions

Kun Xu, Jiaping Wang, Xin Tong, Shi-Min Hu, Baining Guo

Computer Graphics Forum 28(7), 1871-1877, 2009. (Pacific Graphics 2009)

@article{Xu09pg,
  author = {Kun Xu and Jiaping Wang and Xin Tong and Shi-Min Hu and Baining Guo },
  title = {Edit Propagation on Bidirectional Texture Functions},
  journal = {Computer Graphics Forum},
  volume = {28},
  number = {7},
  year = {2009},
  pages = {1871--1877},
}

2008
Spherical Piecewise Constant Basis Functions for All-Frequency Precomputed Radiance Transfer

Kun Xu, Yun-Tao Jia, Hongbo Fu, Shi-Min Hu, Chiew-Lan Tai

IEEE Transaction on Visualization and Computer Graphics 14(2), 454-467, 2008.

@article{Xu08tvcg,
  author = {Kun Xu and Yun-Tao Jia and Hongbo Fu and Shi-Min Hu and Chiew-Lan Tai},
  title = {Spherical Piecewise Constant Basis Functions for All-Frequency Precomputed Radiance Transfer},
  journal = {IEEE Transaction on Visualization and Computer Graphics},
  volume = {14},
  number = {2},
  year = {2008},
  pages = {454--467},
}

2007
Real-time homogeneous translucent material editing

Kun Xu, Yue Gao, Yong Li, Tao Ju, Shi-Min Hu

Computer Graphics Forum 26(3), 545-552, 2007. (EuroGraphics 2007)

@article{Xu07eg,
  author = {Kun Xu and Yue Gao and Yong Li and Tao Ju and Shi-Min Hu},
  title = {Real-time Homogenous Translucent Material Editing},
  journal = {Computer Graphics Forum},
  volume = {26},
  number = {3},
  year = {2007},
  pages = {545--552},
}

2006
Spherical Harmonics Scaling

Jiaping Wang, Kun Xu, Kun Zhou, Stephen Lin, Shi-Min Hu, Baining Guo

Pacific Conference on Computer Graphics and Applications, Oct 2006.
The Visual Computer, Volume 22, p713-720, Sept 2006.

@article{Wang06pg,
  author = {Jiaping Wang and Kun Xu and Kun Zhou and Stephen Lin and Shi-Min Hu and Baining Guo},
  title = {Spherical Harmonics Scaling},
  journal = {The Visual Computer},
  volume = {22},
  month = {Sept},
  year = {2006},
  pages = {713-720}
}