Keynote Speech

Computational Design of Freeform Origami

Tomohiro Tachi

Origami is the traditional art of folding a sheet of paper into various forms, typically without cutting or gluing. Origami has also developed into an interdisciplinary research field bridging mathematics, physics, computer science, engineering, design, art, history, and more.
Origami engineering leads to the efficient fabrication of small and large 3D objects and the realization of portable, transformable architecture.
In the process of designing origami for art and engineering, computational origami, i.e., the geometry and algorithm of origami, is highly important. Without geometric considerations, one cannot design a form that can be folded from a sheet of paper, flatly collapsed, or continuously transformed in the desired way.
In this lecture, we present some recent studies on computational origami algorithms and interactive systems that enable the design of freeform origami. The topics include an algorithm for "origamizing" arbitrary polyhedral surfaces, obtaining freeform tessellated origami surfaces, and collapsible mechanisms enabled by rigid origami. The proposed systems are freely available from the lecturer’s website ( Rigid Origami Simulator, Origamizer, and Freeform Origami.

Tomohiro Tachi received his PhD in engineering from the University of Tokyo, Japan, in 2010. He is currently an assistant professor in the Department of General Systems Studies at the University of Tokyo. His research interests include origami engineering,
computational architecture, and digital fabrication.


June 2 NICOGRAPH International 2013 (1st day)

9:30 - 10:30 Registration / Annual Board Meeting
10:30 - 10:45 Opening Remark (Etsuo Genda and Shinya Miyazaki)
10:45 - 11:55 Session 1 (3D Modeling and Rendering)
Chair: Osama Halabi
  • * Micro-Geometric Skin Simulation for Face Impression Analysis
    Takayuki Itoh, Fumie Banba, Mami Inomata, Mihayu Kurokawa, Naruhito Toyoda, Hitomi Otaka and Hiromi Sasamoto
  • + An Interactive Tile-Based Modeling Interface
    Maki Terai and Reiji Tsuruno
  • * An Estimation of Earthenware’s Surface Shape Using Quadric Surfaces
    Tsutomu Kinoshita, Katsutsugu Matsuyama and Kouichi Konno
  • + An Automatic Generation of 3D Plant Models by Genetic Algorithms into Plant-hormones based Growth Model
    Kazuki Uehara, Yuhei Akamine, Satoshi Endo and Moeko Nerome

    *: full papers (20 min.)
    +: short papers (15 min.)
11:55 - 13:25 Lunch
13:25 - 14:25 Interactive Poster Session
Chair: Reiji Tsuruno
  • - Combustion Model for Animating Explosions Employing a Particle-based Approach
    Daiki Takeshita
  • - Automatic Recording System of the Chess Score Sheet using Piece Position Detection with the Optical Sensor
    Daiki Takeshita
  • - A Proposal of Patchwork Design Support System
    Masumi Hiraoka and Takeshi Toda
  • - Occurrence of Robot Control Feeling Using Motion Capture for Artifact Theater Project
    Toshihiko Ando and Kaoru Matsuyama
  • - Escher-Like Tiling Pattern Design by Interactive Iterative Genetic Algorithm
    Megumi Kisanuki, Satoshi Ono, Hirofumi Machii, Kazunori Mizuno and Shigeru Nakayama
  • - Gesture-based Multiuser Slide Interface
    Kazuma Miyanabe and Hiroki Takahashi
  • - Development of Motion Visualization System Using Wearable Inertial and Bio-signal Sensors
    Takashi Yoshinaga and Daisaku Arita
  • - Ground Truth Generation based on Geometrical Features of Lane Markers
    Jun Shiwaku and Hiroki Takahashi
  • - Study of the Generation of Nebuta-like Image from 3D Surface Model
    Tomoya Ito
  • - CUDA Accelerated Motion Computation of Square Lattice Elastic Models
    Shinya Miyazaki, Mamoru Endo, Masashi Yamada and Takami Yasuda
  • - Proposal and Evaluation of a Tone Mapping Technique Using Camera Response Functions
    Nobuo Takahashi, Kiyofumi Motoyama and Takami Yasuda
14:25 - 15:25 Keynote Speech
Chair: Kazunori Miyata
  • - Computational Design of Freeform Origami
    Tomohiro Tachi
(coffee break)
15:40 - 16:40 Session 2 (Visualization and Application)
Chair: Issei Fujishiro
  • + A Linked Visualization of Explanatory Variable and Objective Function Spaces for Multi-objective Optimization
    Maki Kubota and Takayuki Itoh
  • + Apple-Peel Fold-Out Nets of 4-D Regular Polytopes
    Haruki Chiba, Hikaru Arai and Keimei Kaino
  • + Effect of Animated Characters and Adjustable Tags in AR Storytelling
    R.P.C. Janaka Rajapakse and Yoshimasa Tokuyama
  • + Improvement of Diving Interface for Virtual Diving Experience Learning System
    Yasushi Hosokawa, Akio Doi, Toyoo Takata and Yoshihiko Abe

    *: full papers (20 min.)
    +: short papers (15 min.)
(coffee break)
16:55 - 17:55 Session 3 (Shading and Imaging)
Chair: Hiroki Takahashi
  • + Multi-Class Poisson Disk Sampling with Radius-Order Scan of Pixels
    Shaolong Li, Junsheng Tao and Kiichi Urahama
  • + Rendering Wayang Beber Pacitan Character's Cloth ; Shape, Color, and Pattern
    Banung Grahita, Toshihiro Komma and Kumiko Kushiyama
  • + A Photograph Browser Applying Photomosaic
    Kiho Sakamoto and Takayuki Itoh
  • + Effects of Depth in Digital Comics on 3D Displays
    Hideo Kasuga and Shunsuke Kobayashi

    *: full papers (20 min.)
    +: short papers (15 min.)
18:30 - Banquet at Hilton Fukuoka Sea Hawk

June 3 NICOGRAPH International 2013 (2nd day)

9:00 - 9:10 Registration
9:10 - 10:20 Session 4 (Contents Creation and Evaluation)
Chair: Toshihiro Komma
  • * Datamoshing Technique for Video Production
    Yuichi Ito, Carl Stone, Masashi Yamada and Shinya Miyazaki
  • * An Interactive Surface that Recognizes User Actions using Accelerometers
    Naoya Isoyama, Tsutomu Terada and Masahiko Tsukamoto
  • + Mobile Augmented Reality for Pedestrian Navigation
    Huda Abu Abdullah, Sumayia Alkaladi and Osama Halabi
  • + The Development of Mobile Apps not influenced by Version Upgrades in the Android OS
    Nobuhiko Takada,Issei Yoshida,Masami Suzuki,Ryoichi Yanagisawa

    *: full papers (20 min.)
    +: short papers (15 min.)
(coffee break)
10:35 - 12:05 Session 5 (Physics-based Simulation)
Chair: R.P.C. Janaka Rajapakse
  • * Langevin Rigid: Animating Immersed Rigid Bodies in Real-time
    Haoran Xie and Kazunori Miyata
  • + Visual Simulation of a Beach by a Particle-based Simulation of Breaking Waves and Foam
    Zhuge Shenping, Kouki Itoh and Tsukasa Kikuchi
  • * Anti-aliasing for Cubic Lattice Mass Spring Models
    Maciej Kot and Hiroshi Nagahashi
  • * Interactive Shape Control for Fluid Animation
    Jun Yoshino and Reiji Tsuruno
  • + The boundary condition of the Poisson type equation in MPS
    Motofumi Hattori, Yoshinori Tonooka, Yuki Nakajima, Kazuya Shibata and Seiichi Koshizuka

    *: full papers (20 min.)
    +: short papers (15 min.)
12:20 - 12:40 Closing Remarks (Takayuki Itoh)