Design of knowledge extraction system for medical data using computational geometry

2012 Fiscal Year Final Research Report

• Project/Area Number: 23700006
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Fundamental theory of informatics
• Research Institution: Tohoku University
• Principal Investigator: CHUN Jnhee 東北大学, 大学院・情報科学研究科, 准教授 (80431550)
• Project Period (FY): 2011 – 2012
• Keywords: アルゴリズム / 計算理論 / 知識検出 / 情報システム

Research Abstract

In this research gives optimal approximation algorithms for medical image data and numerical data as a theoretical hierarchical segmentation. A given pixel grid and baselines, one can compute in polynomial time a maximum-weight region that can be decomposed into disjoint base-monotone regions. To finding the maximum weight region that is the union of elementary shapes for the corresponding cases. We proved to be NP-hard. This result shows improve to relation of computational complexity and geometric properties.

Research Products

• [Journal Article] Base location problems for base-monotone regions (2013)
  • Author(s): Jinhee Chun, Takashi Horiyama, Takehiro Ito, Natsuda Kaothanthong, Hirotaka Ono, Yota Otachi, Takeshi Tokuyama, Ryuhei Uehara, Takeaki Uno
  • Journal Title: Algorithms and Computation Lecture Notes in Computer Science Volume: LNCS7748 Pages: 53-64
  • DOI: DOI:10.1007/978-3-642-36065-7_7
  • Peer Reviewed
• [Journal Article] A Unified View to Greedy Geometric Routing Algorithms in Ad Hoc Networks (2012)
  • Author(s): Jinhee Chun, Akiyoshi Shioura, Truong Minh Tien and Takeshi Tokuyam
  • Journal Title: Algorithms for Sensor Systems Lecture Notes in Computer Science Volume: LNCS7718 Pages: 54-65
  • DOI: DOI:10.1007/978-3-642-36092-3_7
  • Peer Reviewed
• [Journal Article] Algorithms for computing the maximum weight region decomposable into elementary shapes (2012)
  • Author(s): Jinhee Chun, Natsuda Kaothanthong, Ryosei Kasai, Matias Korman, Martin Nollenburg, Takeshi Tokuyama
  • Journal Title: Computer Vision and Image Understanding Volume: Vol.116, no.7 Pages: 83-814
  • DOI: DOI:10.1016/j.cviu.2012.03.003
  • Peer Reviewed
• [Journal Article] Image Retrieval System Using Distance-Based Shape Recognition (2011)
  • Author(s): Natsuda Kaothanthong, Yoshiki Ota, Jinhee Chun, Takeshi Tokuyama
  • Journal Title: Proceedings of The 14th Korea-Japan Joint Workshop on Algorithms and Computation Volume: Vol.14 Pages: 137-144
  • Peer Reviewed
• [Journal Article] Distance-Based Shape Invariants for Image Retrieval (2011)
  • Author(s): Jinhee Chun, Natsuda Kaothanthong, Yoshiki Ota, and Takeshi Tokuyama
  • Journal Title: Proceedings of The 4th Annual Meeting of the Asian Association for Algorithms and Computation Volume: Vol 4 Pages: 40
  • Peer Reviewed
• [Presentation] Space-efficient polygon reconstruction from visibility angle information (2013)
  • Author(s): Jinhee Chun, Ricardo Gonzaro and Takeshi Tokuyama
  • Organizer: 6th Annual Meeting of the Asian Association for Algorithms and Computation (AAAC2013)
  • Place of Presentation: Matsushima, Japan
  • Year and Date: 2013-04-21
• [Presentation] Shape Description using Classified Distances (2013)
  • Author(s): Jinhee Chun, Natsuda Kaothanthong and TakeshiTokuyama
  • Organizer: 6th Annual Meeting of the Asian Association forAlgorithms and Computation (AAAC2013)
  • Place of Presentation: Matsushima, Japan
  • Year and Date: 2013-04-20
• [Presentation] Base location problems for base-monotone regions (2013)
  • Author(s): Jinhee Chun, Takashi Horiyama, Takehiro Ito, Natsuda Kaothanthong, Hirotaka Ono, Yota Otachi, Takeshi Tokuyama, Ryuhei Uehara, Takeaki Uno
  • Organizer: 7th International Workshop on Algorithms and Computation
  • Place of Presentation: Kharagpur, India
  • Year and Date: 2013-02-15
• [Presentation] Algorithms for Computing Optimal Image Segmentation using Quadtree Decomposition (2012)
  • Author(s): Jinhee Chun, Takasi Horiyama, Takehiro Ito, Natsuda Kaothanthong, Hirotaka Ono, Yota Otachi, Takeshi Tokuyama, Ryuhei Uehara and Takeaki Uno
  • Organizer: Thailand-Japan Joint Conference on Computational Geometry and Graphs(TJJCCGG2012)
  • Place of Presentation: Bangkok, Thailand
  • Year and Date: 2012-12-06
• [Presentation] A Unified View to Greedy Geometric Routing Algorithms in Ad Hoc Networks (2012)
  • Author(s): Jinhee Chun, Akiyoshi Shioura, Truong Minh Tien and Takeshi Tokuyam
  • Organizer: 8th International Symposium on Algorithms for Sensor Systems
  • Place of Presentation: Ljubljana, Slovenia
  • Year and Date: 2012-09-13
• [Presentation] A Unified View to Greedy Routing Algorithms in Ad Hoc Networks (2012)
  • Author(s): Jinhee Chun, Akiyoshi Shioura, Truong Minh Tien and Takeshi Tokuyama
  • Organizer: 15th Korea-Japan Joint Workshop on Algorithms and Computation(WAAC2012)
  • Place of Presentation: Tokyo, Japan
  • Year and Date: 2012-07-10
• [Presentation] Optimal Grid Decomposition for Maximum Weight Region Computation with Application to Image Segmentation (2012)
  • Author(s): Jinhee Chun, Natsuda Kaothanthong, Hiromi Takahashi, Takeshi Tokuyama
  • Organizer: Computational Geometry: Young Researchers Forum(CG:YRF)
  • Place of Presentation: Chapel Hill, USA
  • Year and Date: 2012-06-19
• [Presentation] How to cut a complicated figure by using scissors? Computing the maximum weight region consisting of base monotone regions (2012)
  • Author(s): Jinhee Chun, Natsuda Kaothanthong, Hiromi Takahashi, Takeshi Tokuyama
  • Organizer: The 5th Annual Meeting of the Asian Association for Algorithms andComputation (AAAC2012)
  • Place of Presentation: Shanghai, China
  • Year and Date: 2012-04-21
• [Presentation] An Algorithm for Optimally Locating Baselines using Quad Decomposition (2012)
  • Author(s): Jinhee Chun, Natsuda Kaothanthong, Yota Otachi, Hiromi Takahashi, and Takeshi Tokuyama
  • Organizer: 2012 年電子情報通信学会 総合大会
  • Place of Presentation: 岡山
  • Year and Date: 2012-03-21
• [Presentation] An Image Segmentation using Maximum Weight Region with Shape Constraint (2012)
  • Author(s): Jinhee Chun, Natsuda Kaothanthong, Hiromi Takahashi, and Takeshi Tokuyama
  • Organizer: The First ETH-JAPAN Workshop on Science and Computing
  • Place of Presentation: Engelberg, Switzerland
  • Year and Date: 2012-03-13
• [Presentation] Image Segmentation Using Maximum Weight Region (2011)
  • Author(s): Jinhee Chun,Natsuda Kaothanthong, Takeshi Tokuyama
  • Organizer: 電子情報 通信学会コンピューテション研究会
  • Place of Presentation: 名古屋
  • Year and Date: 2011-12-16
• [Presentation] Image Retrieval Using Shape Recognition (2011)
  • Author(s): Natsuda Kaothanthong,Yoshiki Ota, Jinhee Chun , Takeshi Tokuyama
  • Organizer: 第10回情報科学技術フォーラム (FIT2011)
  • Place of Presentation: 函館
  • Year and Date: 2011-09-08
• [Presentation] Image Retrieval System Using Distance-Based Shape Recognition (2011)
  • Author(s): Natsuda Kaothanthong,Yoshiki Ota, Jinhee Chun,Takeshi Tokuyama
  • Organizer: The 14th Korea-Japan Joint Workshop on Algorithms and Computation (WAAC2011)
  • Place of Presentation: Pusan, Korea
  • Year and Date: 2011-07-09
• [Presentation] Distance-Based Shape Invariants for Image Retrieval (2011)
  • Author(s): Jinhee Chun, Natsuda Kaothanthong, Yoshiki Ota, and Takeshi Tokuyama
  • Organizer: The 4th Annual Meeting of the Asian Association for Algorithms and Computation(AAAC2011)
  • Place of Presentation: HsinChu, Taiwan
  • Year and Date: 2011-04-16