A new mechanism for motion generation and control of virtual agent with 3D non-rigid shape

• Project/Area Number: 24300035
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Media informatics/Database
• Research Institution: Tokyo Institute of Technology
• Principal Investigator: NAGAHASHI Hiroshi 東京工業大学, 像情報工学研究所, 教授 (20143084)
• Co-Investigator(Kenkyū-buntansha): AOKI Kota 東京工業大学, 像情報工学研究所, 助教 (90447532)
• Project Period (FY): 2012-04-01 – 2015-03-31
• Project Status: Completed (Fiscal Year 2014)
• Budget Amount: ¥11,440,000 (Direct Cost: ¥8,800,000、Indirect Cost: ¥2,640,000); Fiscal Year 2014: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2013: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000); Fiscal Year 2012: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
• Keywords: 3次元エージェント / ばね質点モデル / パラメータ化 / 反応拡散系 / 活性因子 / モデル非剛体変形 / ＬＯＤ表現 / 変形活動発生機構 / 変形活動学習機構 / 機械学習 / ばねモデル / モデル変形 / 動的特性 / 非剛体形状モデル / 自律的機能獲得 / Mass Spring Model / LOD表現 / メッシュ再分割

Outline of Final Research Achievements

This study proposed a new mechanism for generating and controlling autonomous motions of non-rigid 3D objects, and constructed its prototype system. In the proposed system, a 3D object with non-rigid shape is regarded as a virtual agent and autonomously acquires a best motion by a certain kind of unsupervised learning according to its physical properties and external environment. The system also enables to represent elastic characteristics of real materials for approximating physical phenomena.
It proved to be available for generating natural autonomous motion of non-rigid 3D objects.

Research Products

• [Journal Article] Resolution Scaling for Mass Spring Model Simulations (2014)
  • Author(s): Maciej KOT, Hiroshi NAGAHASHI, Krzysztof GRACKI
  • Journal Title: IEICE Trans. on Information & Systems Volume: E97-D Pages: 2138-2146
  • NAID: 130004679294
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Elastic moduli of simple mass spring models (2014)
  • Author(s): Maciej Kot, Hiroshi Nagahashi, Piotr Szymczak
  • Journal Title: Visual Computer Volume: 04 Sept. Issue: 10 Pages: 1-12
  • DOI: 10.1007/s00371-014-1015-5
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Border Limited Adaptive Subdivision Based on Triangle Meshes (2013)
  • Author(s): Pichayut Peerasathien and Hiroshi Nagahashi
  • Journal Title: World Academy of Science, Engineering and Technology (ICCGIP2013) Volume: 73 Pages: 600-604
  • Peer Reviewed
• [Journal Article] Simplification of mass spring models (2012)
  • Author(s): Maciej Kot, Hiroshi Nagahashi and K Gracki
  • Journal Title: The 2012 Int. Con￡on Computer Graphics and Virtual Reality(CGVR' 12) Pages: 90-96
  • Peer Reviewed
• [Presentation] Second Degree of Freedom of Elastic Objects: Adjustable Poisson's Ratio for Mass Spring Models (2015)
  • Author(s): Maciej Kot and Hiroshi Nagahashi
  • Organizer: 10th Int. Conf. on Computer Graphics Theory and Applications
  • Place of Presentation: Berlin, Germanny
  • Year and Date: 2015-03-11 – 2015-03-14
• [Presentation] A Homotopy Surface Cutting using Paths Crossing in Geodesic Distance (2015)
  • Author(s): Anuwat Dechvijankit, Hiroshi Nagahashi and Kota Aoki
  • Organizer: 10th Int. Conf. on Computer Graphics Theory and Applications
  • Place of Presentation: Berlin, Germanny
  • Year and Date: 2015-03-11 – 2015-03-14
• [Presentation] 三次元超音波画像における高密度な長時間動態解析 (2015)
  • Author(s): 横山 諒, 青木 工太, 長橋 宏
  • Organizer: 画像電子学会第272回研究会
  • Place of Presentation: 和歌山大学，和歌山市
  • Year and Date: 2015-02-27 – 2015-02-28
• [Presentation] Dense motion analysis and segmentation of ultrasound images (2015)
  • Author(s): Ryo Yokoyama, Kota Aoki and Hiroshi Nagahashi
  • Organizer: SPIE, Multimodal Biomedical Imaging
  • Place of Presentation: San Francisco, California, USA
  • Year and Date: 2015-02-07 – 2015-02-12
• [Presentation] 超音波画像における動態の長時間解析 (2014)
  • Author(s): 横山諒，青木工太，長橋宏
  • Organizer: 日本医用画像工学会
  • Place of Presentation: 東京慈恵会医科大学，東京都港区
  • Year and Date: 2014-07-24 – 2014-07-26
• [Presentation] Collision Response in Mass Spring Model Simulations (2014)
  • Author(s): Maciej Kot, Hiroshi Nagahashi
  • Organizer: 電子情報通信学会技術研究報告，IMQ2013-82
  • Place of Presentation: 大分県別府市
• [Presentation] 反応拡散系を制御空間とする３Ｄモデルの自律的な動作獲得 (2014)
  • Author(s): 河西 純，青木 工太，長橋 宏
  • Organizer: 電子情報通信学会技術研究報告，IMQ2013-84
  • Place of Presentation: 大分県別府市
• [Presentation] Anti-aliasing for Cubic Lattice Mass Spring Models (2013)
  • Author(s): Maciej Kot and Hiroshi Nagahashi
  • Organizer: NICOGRAPH International 2013
  • Place of Presentation: 福岡県福岡市
• [Presentation] An Optimization of Square Parameterization (2013)
  • Author(s): Anuwat Dechvijankit, Hiroshi Nagahashi and Kota Aoki
  • Organizer: 21st Int. Conf. in Central Europe on Computer Graphics, Visualization and Computer Vision'2013
  • Place of Presentation: Plzen, Czech Republic