Online Event Wellington, New Zealand
October 18 – 21, 2021
General Co-Chairs
Taehyun Rhee, Victoria University of Wellington Shi-Min Hu, Tsinghua University
Holly Rushmeier, Yale University
Program Co-Chairs
Fang-Lue Zhang, Victoria University of Wellington Elmar Eisemann, Delft University of Technology
Karan Singh, University of Toronto
Conference Paper Co-Chairs Sung-Hee Lee, KAIST
Stefanie Zollmann, University of Otago Makoto Okabe, Shizuoka University Burkhard Wünsche, The University of Auckland
Local Co-Chairs
Alex Doronin, Victoria University of Wellington Neil Dodgson, Victoria University of Wellington Andrew Chalmers, Victoria University of Wellington
DOI: 10.1111/cgf.14422 https://www.eg.org https://diglib.eg.org
Sponsors
Preface
The 28th and 29th Pacific Conference on Computer Graphics and Applications (Pacific Graphics 20+21) are jointly hosted in Wellington, New Zealand. As a highly successful conference series, Pacific Graphics provides a premium forum for researchers, developers, and practitioners from around the world in com- puter graphics and related areas. The 2021 call for papers also changed the submission procedure and a call for Journal and Conference papers was released to further enrich the program. The joint PG 20+21 conference is a great platform for celebrating recent research achievements and, unifying years of con- tents, offers a very large selection of top contributions. Due to the world-wide travel restrictions during the COVID-19 pandemic, the conference is held fully online.
Pacific Graphics 2021 received 81 valid full paper submissions for the journal track. With the help of 76 international experts in our Program Committee and 71 external reviewers, we were able to evaluate each submission in a rigorous review process. By matching the paper research topics with the expertise and preferences of committee members, the program co-chairs assigned one primary and two secondary reviewers from the Program Committee to each paper. In case additional expertise was required, the primary reviewer could invite additional external reviewers. After the first cycle review, the authors could provide their rebuttal to address the major concerns from all the reviewers. The primary led a post-rebuttal discussion phase to form the senior recommendation based on a consensus among the reviewers, during which the reviewers were also asked to consider potential ethical issues that they could raise to the chairs, which were escalated to the steering committee when needed. Conditionally accepted full/short papers underwent a second review cycle by the primary reviewer to include the revisions required in the review summary.
Out of 81 journal track submissions, 26 full papers (acceptance rate: 32.1%) were finally accepted. All the full papers are published in the special issue of Computer Graphics Forum. There are eight more papers, which were referred to the regular submission process of Computer Graphics Forum due to required major revisions. The conference track is an important part of the conference technical program, including short papers, work-in-progress papers and poster papers. Three journal track submissions were instead accepted as conference short papers. All accepted conference track papers are invited to be presented at PG20+21 and published electronically through the EG Digital Library.
We would like to thank all the people that generously offered their time and energy to contribute to the review process and a successful technical programme of PG2021, including the authors of all submitted papers, the members of PG2021 Program Committees, and all the external reviewers. We also thank Stefanie Behnke for her handling and setup of the submission system, Bedrich Benes for his support regarding the reviewing schedule and for handling the referrals to CGF, Marc Stamminger for his help regarding the conference management and communication with EG. Finally, we would like to thank the Pacific Graphics Steering Committee for their great support.
Program Co-Chairs Elmar Eisemann Karan Singh Fang-Lue Zhang
International Program Committee
Mridul Aanjaneya (Rutgers) Noam Aigerman (Adobe) Yagiz Aksoy (SFU)
Rahul Arora (University of Toronto) Christopher Batty (University of Waterloo) Bedrich Benes (Purdue)
Mikhail Bessmeltsev (University de Montreal) Tamy Boubekeur (Telecom Paristech)
Byungkuk Choi (Weta Digital)
Yoshinori Dobashi (Hokkaido University) Haekwang Eom (Weta Digital)
Hongbo Fu (City University of Hong Kong, China) Lin Gao (Institute of Computing, CAS)
Ioannis Gkioulekas (CMU) Enrico Gobbetti (CRS4)
Xianfeng Gu (Stony Brook University) Min H. Kim (KAIST)
Vastimil Havran (CTU Prague) Philipp Herholz (ETH Zurich) Stefan Jeschke (NVIDIA) Joaquim Jorge (Uni. Lisboa) Anton Kaplanyan (Oculus) Jiri Kosinka (Groningen) Yukun Lai (Cardiff University) Yoonsang Lee (Hanyang University)
Wen-Chieh Lin (National Chiao Tung University) Tiantian Liu (MSRA)
Hsueh-Ti Liu (University of Toronto) Yong-Jin Liu (Tsinghua University) Shaoping Lu (Nankai University) Lin Lu (Shandong University)
Kwan-Liu Ma (University of California at Davis, USA) Pooran Memari (CNRS)
Jean Michel Dischler (Univ. Strasbourg) Karol Myszkowski (MPI for Informatics)
Rahul Narain (Indian Institute of Technology Delhi) Junyong Noh (KAIST)
Miguel Otaduy (URJC Madrid) Anjul Patney (NVIDIA)
Fabio Pellacini (Sapienza University of Rome) Tiberiu Popa (Concordia)
Hong Qin (Stony Brook University) Christian Roessl (Uni Magdeburg)
International Program Committee
Craig Schroeder (University of California at Riverside) Eston Schweickart (Weta Digital)
Alla Sheffer (University of British Columbia, Canada) Gurprit Singh (MPI for Informatics)
Melina Skouras (Inria)
Philipp Slusallek (Saarland University) Cyril Soler (Inria)
Marc Stamminger (Univ. of Erlangen) Markus Steinberger (TU Graz)
Kartic Subr (Edinburgh) Shinjiro Sueda (Texas A&M) Jianchao Tan (Kwai)
Min Tang (Zhejiang University) Marco Tarini (Univ. Milano / CNR) Holger Theisel (Univ. of Magdeburg) Amir Vaxman (Utrecht University) Etienne Vouga (UT Austin)
Wenping Wang (The University of Hong Kong) Jue Wang (Megvii)
Rui Wang (University of Massachusetts) Miao Wang (Beihang University)
Tien-Tsin Wong (The Chinese University of Hong Kong) Hongzhi Wu (Zhejiang University)
Chris Wyman (NVIDIA Research) Chunxia Xiao (Wuhan University)
Kai Xu (National University of Defense Technology) Lingqi Yan (UCSB)
Sung-Eui Yoon (KAIST)
Lei Zhang (Beijing Institute of Technology)
Yun Zhang (Communication University of Zhejiang) Bo Zhu (Dartmouth College)
Zhe Zhu (Duke University) Changqing Zou (UMIACS)
External Reviewers
Alldieck, Thiemo Ashtari, Amirsaman Bi, Sai
Bommes, David Bousseau, Adrien Bruckner, Stefan Cao, Ying
Cherchi, Gianmarco Deng, Yu
Dong, Yue
Dvoroznak, Marek Frey, Steffen Froehlich, Bernd Frühstück, Anna Gautron, Pascal Grosset, Pascal Gruson, Adrien Guo, Jie
Habib, Rubaiat Hädrich, Torsten Han, Daseong He, Shengfeng Hu, Xiaowei Huang, Ruqi Huang, Xiaolei
Iglesias-Guitian, Jose A.
Iwasaki, Kei Kagami, Shingo Kelly, Tom Kim, Byungsoo
Kohlbrenner, Maximilian Krishna Reddy, Mahesh Kumar Kwon, Taesoo
Le, Binh
Leimkuehler, Thomas Li, Kun
Li, Xiaoyu Lin, I-Chen Liu, Yang Luan, Fujun Lun, Zhaoliang Maciel, Anderson Masia, Belen Mo, Haoran
Mouscadet, Benjamin Paquette, Eric
Pereira, João Madeiras Rosin, Paul
Santesteban, Igor Sauvage, Basile Sintorn, Erik Song, Dan Soomin, Kim Texler, Ondˇrej Trnkova, Maria van Toll, Wouter Vining, Nicholas Wan, Liang Wang, Meili Wang, Xiaogang Wei, Li-Yi Wei, Mingqiang Wolper, Joshuah Xi, Junhua Xu, Kun Xue, Tao Yang, Jie Zhang, Juyong Zhang, Rui-Si Zhong, Rui Zhuang, Yixin
Author Index
Aanjaneya, Mridul . . . 97
Arleo, Alessio . . . 241
Bai, Junxuan . . . 71
Borowski, Judy . . . 253
Cao, Ruizhi . . . 1
Cao, Yan-Pei . . . 217
Chen, Luanmin . . . 265
Chen, Minchan . . . 229
Cheng, Zhanglin . . . 289
Choi, Hajin . . . 121
Collon, Pauline . . . 277
Curtis, Cassidy . . . 21
Dai, Ju . . . 71
Doi, Kohei . . . 11
Dong, Bo . . . 181
Eisemann, Elmar . . . 109, 141 Endo, Yuki . . . 205
Galin, Eric . . . 277
Gao, Chengying . . . 1
Guérin, Eric . . . 277
Guo, Jerry Jinfeng . . . 109
Han, Chengguizi . . . 97
Hasani, Ramin . . . 253
Havran, Vlastimil . . . 161
He, Zhenbang . . . 289
Hu, Ruizhen . . . 265
Hua, Binh-Son . . . 131
Huang, Haibin . . . 265
Huang, Hui . . . 265
Huang, Ze-Huan . . . 217
Jiang, Yuntao . . . 85
Jung, Sunjin . . . 45
Kán, Peter . . . 241
Kanamori, Yoshihiro . . . 205
Kelly, Tom . . . 193
Kerbl, Bernhard . . . 57
Kikuchi, Kotaro . . . 33
Kim, Dongjoon . . . 149
Kim, Seonghyeon . . . 45
Knecht, Wolfgang . . . 241
Kye, Heewon . . . 149
Lan, Yingjie . . . 85
Lau, Manfred . . . 229
Lechner, Mathias . . . 253
Liu, Ligang . . . 173
Liu, Wentao . . . 181
Long, Chengjiang . . . 181
Meister, Daniel . . . 131
Mo, Haoran . . . 1
Moon, Bochang . . . 121
Morimoto, Yuki . . . 11
Mukherjee, Sabyasachi . . . 131
Mukherjee, Sayan . . . 131
Noh, Junyong . . . 45
Otani, Mayu . . . 33
Pan, Junjun . . . 71
Paris, Axel . . . 277
Pernsteiner, Jakob . . . 57
Peytavie, Adrien . . . 277
Platkeviˇc, Adam . . . 21
Ribera, Roger Blanco i . . . 45
Ruit, Mark van de . . . 141
Seo, Kwanggyoon . . . 45
Shen, Pengfei . . . 173
Shen, Zhi-Meng . . . 217
Sietzen, Stefan . . . 253
Simo-Serra, Edgar . . . 33
Sloup, Jaroslav . . . 161
Sorger, Johannes . . . 241
Sýkora, Daniel . . . 21
Tajima, Daichi . . . 205
Tsuruno, Reiji . . . 11
Umetani, Nobuyuki . . . 131
Unterguggenberger, Johannes . . . 57
Waldner, Manuela . . . 241, 253 Wan, Pengfei . . . 217
Wang, Beibei . . . 173
Wang, Chuan . . . 265
Wang, Miao . . . 217
Wang, Siyuan . . . 71
Wang, Yunhai . . . 289
Wimmer, Michael . . . 57
Xiao, Chunxia . . . 181
Xu, Juzhan . . . 265
Xu, Xiang . . . 217
Xue, Tao . . . 97
Yamaguchi, Kota . . . 33
Yu, Hanning . . . 181
Author Index
Zhang, Jia-Qi . . . 217
Zhao, Yang . . . 217
Zhu, Jialin . . . 193
Zhuang, Tao . . . 173
Zou, Qin . . . 181
TABLE OF CONTENTS Stylization and Layout
Line Art Colorization Based on Explicit Region Segmentation Ruizhi Cao, Haoran Mo, and Chengying Gao
1
Global Illumination-Aware Stylised Shading Kohei Doi, Yuki Morimoto, and Reiji Tsuruno
11
Fluidymation: Stylizing Animations Using Natural Dynamics of Artistic Media Adam Platkeviˇc, Cassidy Curtis, and Daniel Sýkora
21
Modeling Visual Containment for Web Page Layout Optimization Kotaro Kikuchi, Mayu Otani, Kota Yamaguchi, and Edgar Simo-Serra
33
Animation
Deep Learning-Based Unsupervised Human Facial Retargeting
Seonghyeon Kim, Sunjin Jung, Kwanggyoon Seo, Roger Blanco i Ribera, and Junyong Noh
45
Conservative Meshlet Bounds for Robust Culling of Skinned Meshes
Johannes Unterguggenberger, Bernhard Kerbl, Jakob Pernsteiner, and Michael Wimmer
57
Diverse Dance Synthesis via Keyframes with Transformer Controllers Junjun Pan, Siyuan Wang, Junxuan Bai, and Ju Dai
71
A Dynamic Mixture Model for Non-equilibrium Multiphase Fluids Yuntao Jiang and Yingjie Lan
85
A Lagrangian Particle-based Formulation for Coupled Simulation of Fracture and Diffusion in Thin Membranes
Chengguizi Han, Tao Xue, and Mridul Aanjaneya
97
Global Illumination
Geometric Sample Reweighting for Monte Carlo Integration Jerry Jinfeng Guo and Elmar Eisemann
109
Consistent Post-Reconstruction for Progressive Photon Mapping Hajin Choi and Bochang Moon
121
Neural Sequence Transformation
Sabyasachi Mukherjee, Sayan Mukherjee, Binh-Son Hua, Nobuyuki Umetani, and Daniel Meister
131
A Multi-pass Method for Accelerated Spectral Sampling Mark van de Ruit and Elmar Eisemann
141
Real-Time Rendering
Z-Thickness Blending: Effective Fragment Merging for Multi-Fragment Rendering Dongjoon Kim and Heewon Kye
149
Optimizing Ray Tracing of Trimmed NURBS Surfaces on the GPU Jaroslav Sloup and Vlastimil Havran
161
Real-time Denoising Using BRDF Pre-integration Factorization Tao Zhuang, Pengfei Shen, Beibei Wang, and Ligang Liu
173
TABLE OF CONTENTS Image Synthesis and Enhancement
Luminance Attentive Networks for HDR Image and Panorama Reconstruction Hanning Yu, Wentao Liu, Chengjiang Long, Bo Dong, Qin Zou, and Chunxia Xiao
181
Seamless Satellite-image Synthesis Jialin Zhu and Tom Kelly
193
Relighting Humans in the Wild: Monocular Full-Body Human Relighting with Domain Adap- tation
Daichi Tajima, Yoshihiro Kanamori, and Yuki Endo
205
Interaction and Interfaces
Write-An-Animation: High-level Text-based Animation Editing with Character-Scene Inter- action
Jia-Qi Zhang, Xiang Xu, Zhi-Meng Shen, Ze-Huan Huang, Yang Zhao, Yan-Pei Cao, Pengfei Wan, and Miao Wang
217
A Motion-guided Interface for Modeling 3D Multi-functional Furniture Minchan Chen and Manfred Lau
229
Egocentric Network Exploration for Immersive Analytics
Johannes Sorger, Alessio Arleo, Peter Kán, Wolfgang Knecht, and Manuela Waldner
241
Interactive Analysis of CNN Robustness
Stefan Sietzen, Mathias Lechner, Judy Borowski, Ramin Hasani, and Manuela Waldner
253
Modelling
UprightRL: Upright Orientation Estimation of 3D Shapes via Reinforcement Learning Luanmin Chen, Juzhan Xu, Chuan Wang, Haibin Huang, Hui Huang, and Ruizhen Hu
265
Synthesizing Geologically Coherent Cave Networks
Axel Paris, Eric Guérin, Adrien Peytavie, Pauline Collon, and Eric Galin
277
Manhattan-world Urban Building Reconstruction by Fitting Cubes Zhenbang He, Yunhai Wang, and Zhanglin Cheng
289
Invited Talk
Creative AI: Turning 3D Virtual Worlds into Experimental Testbeds for Scientists Marie-Paule Cani
Abstract
Visual representations are essential in science, as they facilitate intuition and ease communication. While the 2D sketches used for centuries recently evolved into 3D contents, the latter are generally not responsive: they do not allow scientists to interact with their models, change hypotheses on the fly and experiment their effects. In this talk, we explore the use of smart 3D environments as visual testbeds in science. We show that a combination of efficient procedural models expressing knowledge, expressive sculpting or sketching interfaces, and learning mechanisms, can help to reach this goal. We illustrate this through a variety of examples, from sculpting eroding mountains that express geological knowledge to helping prehistorians explore past ecosystems with flora and animated fauna.
Short Biography
Marie-Paule Cani is a Professor of Computer Science at Ecole Polytechnique (IP-Paris, France). Her research fo- cuses on shape modelling and animation, with contributions to implicit surfaces, adaptive simulation methods and interactive natural scenes. She developed expressive ways to create them by combining sketching interfaces with models based on knowledge and learning. She received the Eurographics outstanding technical contributions award in 2011, was Siggraph Technical Papers Chair in 2017, joined the Siggraph Academy in 2019 and the French Academy of Sciences in 2020.
Invited Talk AI for Perceiving Humans
Jan Kautz
Abstract
Perceiving humans, such as their pose, gaze, etc., of great interest for many practical applications, including human- machine interaction, activity recognition, video analytics, visual effects, gaming, and any other application involving humans in the scenes. I’ll present a our work focusing on a detailed understanding of the human body from monoc- ular RGB images. Specifically, I’ll present deep learning methods for body pose estimation, hand pose estimation, fiducial landmark detection, and eye gaze estimation and redirection. We’ll show how deep learning models can be made robust to face challenges posed by real-world scenarios and address the problem of data scarcity for training these methods.
Short Biography
Jan Kautz is VP of Learning and Perception Research at NVIDIA. Jan and his team pursue fundamental research in the areas of computer vision and deep learning, including visual perception, geometric vision, generative models, and efficient deep learning. Their work has been awarded various awards and has been regularly featured in the media. Before joining NVIDIA in 2013, Jan was a tenured faculty member at University College London. He holds an undergraduate degree in Computer Science (Universität Erlangen-Nürnberg), an MMath (University of Waterloo), a PhD degree (Max-Planck-Institut für Informatik), and worked as a post-doctoral researcher at the Massachusetts Institute of Technology.
Invited Talk Facing the Future
Mark Sagar
Abstract
Creating intelligent and emotive interactive computer generated humans and characters capable of face to face interactions involves drawing on multiple disciplines.
Mark has been developing technology for digital faces for over twenty years (and counting). This talk will touch on some of the key factors in his journey.
Short Biography
Double Academy Award winner Dr. Mark Sagar is the Co-Founder and CEO of Soul Machines and director of the Laboratory for Animate Technologies at the Auckland Bioengineering Institute.
Mark and his team are bringing technology to life, pioneering the creation of autonomously animated virtual humans with virtual brains and nervous systems, capable of highly expressive face to face interaction and real-time learning and emotional response, to create the next generation of human interaction with artificial intelligence.
Mark has a Ph.D. in Engineering from the University of Auckland, and was a post-doctoral fellow at M.I.T. He previously worked as the Special Projects Supervisor at Weta Digital and Sony Pictures Imageworks and developed technology for the digital characters in blockbusters such Avatar, King Kong, and Spiderman 2. His pioneering work in computer-generated faces was recognized with two consecutive Scientific and Engineering Oscars in 2010 and 2011.
Mark was elected as a fellow of the Royal Society of New Zealand in 2019.
