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Distance Set as a Local Shape Descriptor and its Improvement

Research Project

Project/Area Number 16K00308
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Intelligent informatics
Research InstitutionHiroshima City University

Principal Investigator

Iwata Kazunori  広島市立大学, 情報科学研究科, 准教授 (20405492)

Project Period (FY) 2016-10-21 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords形状認識 / 形状検索 / 形状クラスタリング / 距離集合 / ヒルベルト距離 / フルプロクルステス距離 / 距離計量学習 / 通常プロクルステス二乗和 / プロクルステス解析 / クラスタリング / EMアルゴリズム / k-meansアルゴリズム / 形状解析 / ランドマーク / 非等方的スケーリング / 局所記述子 / 統計的パターン認識 / 線描画
Outline of Final Research Achievements

A shape is formed of contours, such as line drawings by pen or boundaries obtained through image segmentation. The contours can be represented as a finite set of points using contour sampling. Such a finite set of points is called a sample set.
Considering the geometrical configuration of a sample set we presented several methods for shape classification. As an example of considering the geometrical configuration, the classification results do not depend on the similarity transformations to each shape, which consist of translation, rotation, and isotropic scaling. In this series of studies, matching shapes indicates determining the correspondence between their respective sample sets, and is consistently an underlying fundamental process in shape classification. Such matching-based approach gives several merits: for example, we can visually check the matching and clearly confirm the computational reasons for the classification results.

Academic Significance and Societal Importance of the Research Achievements

研究成果で得られた方法は,手書き文字など特定の種類の形状に対して特化したようなものではなく,線描画や輪郭線なども統一して扱うことのできる用途の広いものである.また,形状の検索,分類,クラスタリングといった様々な解析の手段を与えている.
近年はスマートフォンやタブレットなどタッチパネルを備えた器機が急速に普及してきていることから,研究成果の応用例として,タッチパネルに指を使って描いた線描画をクエリーとしたインターネット上の画像検索システムの開発を考えている.

Report

(4 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (25 results)

All 2019 2018 2017 2016 Other

All Journal Article (1 results) (of which Peer Reviewed: 1 results) Presentation (22 results) (of which Int'l Joint Research: 7 results) Remarks (2 results)

  • [Journal Article] Extending the Peak Bandwidth of Parameters for Softmax Selection in Reinforcement Learning2017

    • Author(s)
      Kazunori Iwata
    • Journal Title

      IEEE Transactions on Neural Networks and Learning Systems

      Volume: 28 Issue: 8 Pages: 1865-1877

    • DOI

      10.1109/tnnls.2016.2558295

    • NAID

      120006353329

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Presentation] 観測ノイズを伴うコヒーレンスが大きい線形観測によるLassoの性能評価2019

    • Author(s)
      井原みのり, 岩田一貴, 三村和史
    • Organizer
      第3回情報理論および符号理論とその応用ワークショップ (ICA 2019)
    • Related Report
      2018 Annual Research Report
  • [Presentation] 観測ノイズと大きなコヒーレンスがある線形観測によるL1正則化回帰の性能評価2019

    • Author(s)
      井原みのり, 岩田一貴, 三村和史
    • Organizer
      電子情報通信学会情報理論研究会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Performance of Lasso from Linear Measurements with Large Coherence2018

    • Author(s)
      Minori Ihara, Kazunori Iwata, Nobuo Suematsu, and Kazushi Mimura
    • Organizer
      EASITC 2018
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 大きなコヒーレンスを持つ観測によるスパース推定の性能評価2018

    • Author(s)
      井原みのり, 岩田一貴, 末松伸朗, 三村和史
    • Organizer
      平成30年度(第69回)電気・情報関連学会中国支部連合大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ランドマークに基づく形状間の距離の学習2018

    • Author(s)
      岡本司, 岩田一貴, 末松伸朗, 三村和史
    • Organizer
      平成30年度(第69回)電気・情報関連学会中国支部連合大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] 追加コスト関数を用いた形状間の対応付けの拡張2018

    • Author(s)
      山本大貴, 岩田一貴, 末松伸朗, 三村和史
    • Organizer
      平成30年度(第69回)電気・情報関連学会中国支部連合大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Typical Performance of Sparse Signal Recovery from a Linear Measurement with Large Coherence2018

    • Author(s)
      Minori Ihara, Kazunori Iwata, Nobuo Suematsu, and Kazushi Mimura
    • Organizer
      The 2018 International Symposium on Information Theory and Its Applications (ISITA2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] コヒーレンスが大きい線形観測によるLassoの近似的性能評価2018

    • Author(s)
      井原みのり, 岩田一貴, 末松伸朗, 三村和史
    • Organizer
      第21回情報論的学習理論ワークショップ (IBIS 2018)
    • Related Report
      2018 Annual Research Report
  • [Presentation] 形状検索のための距離計量学習2018

    • Author(s)
      岡本司, 岩田一貴, 末松伸朗, 三村和史
    • Organizer
      第21回情報論的学習理論ワークショップ (IBIS 2018)
    • Related Report
      2018 Annual Research Report
  • [Presentation] 形状局所記述子を用いた形状整合の新しい枠組み2018

    • Author(s)
      山本大貴, 岩田一貴, 末松伸朗, 三村和史
    • Organizer
      第21回情報論的学習理論ワークショップ (IBIS 2018)
    • Related Report
      2018 Annual Research Report
  • [Presentation] A Shape Matching Method Considering Computational Feasibility2018

    • Author(s)
      Hiroki Yamamoto, Kazunori Iwata, Nobuo Suematsu, and Kazushi Mimura
    • Organizer
      The 2018 International Conference on Signal Processing and Machine Learning (SPML 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Shape Clustering as a Type of Procrustes Analysis2018

    • Author(s)
      Kazunori Iwata
    • Organizer
      The 25th International Conference on Neural Information Processing (ICONIP 2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] コヒーレンスが大きい線形観測によるLASSOの近似的性能評価2018

    • Author(s)
      井原みのり, 岩田一貴, 末松伸朗, 三村和史
    • Organizer
      第41回情報理論とその応用シンポジウム (SITA 2018)
    • Related Report
      2018 Annual Research Report
  • [Presentation] A Sampling Method for Processing Contours Drawn with an Uncertain Stroke Order and Number2017

    • Author(s)
      Kazuya Ose, Kazunori Iwata, and Nobuo Suematsu
    • Organizer
      The 15th IAPR International Conference on Machine Vision Applications
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] 非等方的スケーリングに基づく形状間の距離を用いた形状検索2017

    • Author(s)
      岡本 司, 岩田 一貴, 末松 伸朗
    • Organizer
      第20回画像の認識・理解シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] マルコフ連鎖モンテカルロ法を用いた画像レジストレーション2017

    • Author(s)
      嶋本 義己, 末松 伸朗, 岩田 一貴
    • Organizer
      第20回画像の認識・理解シンポジウム
    • Related Report
      2017 Research-status Report
  • [Presentation] 近傍標本点の対応を考慮した形状整合の高速化2017

    • Author(s)
      山本 大貴, 岩田 一貴, 末松 伸朗
    • Organizer
      平成29年度(第68回)電気・情報関連学会中国支部連合大会
    • Related Report
      2017 Research-status Report
  • [Presentation] ノンパラメトリックベイズ時系列整列法の高速化2017

    • Author(s)
      柴田 悠雅, 末松 伸朗, 岩田 一貴
    • Organizer
      平成29年度(第68回)電気・情報関連学会中国支部連合大会
    • Related Report
      2017 Research-status Report
  • [Presentation] フルプロクルステス距離の拡張とその距離計量学習2017

    • Author(s)
      岡本 司, 岩田 一貴, 末松 伸朗
    • Organizer
      第20回情報論的学習理論ワークショップ
    • Related Report
      2017 Research-status Report
  • [Presentation] 近傍標本点の対応を考慮した形状間の対応づけとその計算コストの削減2017

    • Author(s)
      山本 大貴, 岩田 一貴, 末松 伸朗
    • Organizer
      第20回情報論的学習理論ワークショップ
    • Related Report
      2017 Research-status Report
  • [Presentation] Extending the Full Procrustes Distance to Anisotropic Scale in Shape Analysis2017

    • Author(s)
      Tsukasa Okamoto, Kazunori Iwata, and Nobuo Suematsu
    • Organizer
      The 4th IAPR Asian Conference on Pattern Recognition
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Reducing the Computational Cost of Shape Matching with the Distance Set2016

    • Author(s)
      Kazunori Iwata
    • Organizer
      The 23rd International Conference on Pattern Recognition
    • Place of Presentation
      Cancun (Mexico)
    • Year and Date
      2016-12-04
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Remarks] Dr. Kazunori Iwata's Home Page

    • URL

      http://www.prl.info.hiroshima-cu.ac.jp/~kiwata/

    • Related Report
      2018 Annual Research Report 2017 Research-status Report
  • [Remarks] Kazunori Iwata's Home Page

    • URL

      http://www.prl.info.hiroshima-cu.ac.jp/~kiwata/

    • Related Report
      2016 Research-status Report

URL: 

Published: 2016-10-24   Modified: 2020-03-30  

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