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A Study on Robust Spline-based Super Compression of Digital-Ink with Pen Slips

Research Project

Project/Area Number 16K00315
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Intelligent informatics
Research InstitutionFukuoka Institute of Technology

Principal Investigator

Fujioka Hiroyuki  福岡工業大学, 情報工学部, 教授 (10349798)

Co-Investigator(Kenkyū-buntansha) 狩野 弘之  東京電機大学, 理工学部, 教授 (00246654)
Project Period (FY) 2016-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2018: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2017: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2016: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Keywordsスプライン / デジタルインク / 筆滑り / 超圧縮法 / データ圧縮 / スプラインベースドアプローチ / ディープラーニング / スパースコーディング / 筆すべり / 情報基礎 / 超圧縮
Outline of Final Research Achievements

Main purpose of this study was to develop of highly compressing the data called “Digital-Ink” which is a sequence of position data sampled from the traced curve at a sampling rate. Also, we assume that such a digital-ink may include some pen-slips. Here, three issues were considered: (1) Finding out the mechanism of pen-slip from a statistical viewpoint, (2) development of robust compression method of Digital-Ink with Pen-Slips, (3) development of super compression method based on sparse coding and dictionary learning. As for (3), employing a method of dictionary learning called "K-SVD algorithm", we particularly created the best dictionary so that the digital-ink can be represented sparsely and then developed a super compression method of digital-ink based on LASSO.

Academic Significance and Societal Importance of the Research Achievements

文字の書き間違いに関する研究はあっても、ごく自然に起こり得る筆滑りについて研究されたものは文字パターン認識をはじめとする関連分野で皆無である。本研究を通して、筆滑りはデジタルインクの「外れ値」ではなく、「バースト(塊)」として出現、同時に速度や加速度レベルで急激な時系列振る舞いが代わる「変化点」としてみなせることが分かったことは重要な基礎結果である。本課題はそのような筆滑りに対してロバストなデジタルインクの圧縮法の確立を目指すといった独創的な研究であり、オンライン文字認識をはじめ手書き文字を扱う様々な応用面での理論を発展させる上で重要な意義がある。

Report

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

    (21 results)

All 2019 2018 2017 2016 Other

All Int'l Joint Research (2 results) Journal Article (3 results) (of which Peer Reviewed: 3 results,  Open Access: 2 results) Presentation (15 results) (of which Int'l Joint Research: 9 results) Remarks (1 results)

  • [Int'l Joint Research] キングモンクット工科大学(タイ)

    • Related Report
      2018 Annual Research Report
  • [Int'l Joint Research] キングモンクット工科大学(タイ)

    • Related Report
      2017 Research-status Report
  • [Journal Article] Design of Compact Planar B-spline Curves using DP Control Point Selection with Multi-level Error Functions : Towards Usability Improvement in Design of Dynamic Font-based Characters2019

    • Author(s)
      Soontornvorn Rachanart、Fujioka Hiroyuki
    • Journal Title

      IEIE Transactions on Smart Processing & Computing

      Volume: 8 Issue: 2 Pages: 108-120

    • DOI

      10.5573/ieiespc.2019.8.2.108

    • Related Report
      2018 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] Spline Trajectory Planning for Road-Like Path with Piecewise Linear Boundaries Allowing Double Corner Points2018

    • Author(s)
      H. Kano and H. Fujioka
    • Journal Title

      SICE Journal of Control, Measurement, and System Integration

      Volume: 印刷中

    • Related Report
      2017 Research-status Report
    • Peer Reviewed
  • [Journal Article] Basic Study of Soft Actuator Using Anisotropic Gel Hybridized with Nanosheet Liquid Crystal: Analysis of Heat Characteristics and Length Control2017

    • Author(s)
      H. Kino, N. Samrejfuangfoo, K. Tsuda, T. Kato, H. Fujioka
    • Journal Title

      Journal of Procedia Computer Science

      Volume: 105 Pages: 62-67

    • DOI

      10.1016/j.procs.2017.01.199

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] Pix2Pixを用いた古典籍くずし字画像の裏抜け除去2019

    • Author(s)
      植田ちひろ、藤岡寛之、日高章理
    • Organizer
      情報処理学会第81回全国大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] ニューラル画像対画像変換による毛筆体文字の生成2019

    • Author(s)
      島崎早智、多田信洋、藤岡寛之、日高章理
    • Organizer
      情報処理学会第81回全国大会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Design of Compact Planar B-spline Curves Using DP Control Point Selection : - Towards Usability Improvement in Design of Dynamic Font-based Characters -2018

    • Author(s)
      Soontornvorn Rachanart、Fujioka Hiroyuki
    • Organizer
      TENCON 2018 - 2018 IEEE Region 10 Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] B-Spline Trajectory Planning with Curvature Constraint2018

    • Author(s)
      Hiroyuki Kano、Hiroyuki Fujioka
    • Organizer
      2018 American Control Conference
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Constructing Compact Planar B-spline Curves Using Dynamic Programming-based Control Point Selection2018

    • Author(s)
      Soontornvorn Rachanart、Fujioka Hiroyuki
    • Organizer
      電気関係学会九州支部第71回連合大会発表
    • Related Report
      2018 Annual Research Report
  • [Presentation] Design of Hairy Brush Characters Using Convolutional Encoder-Decoder Network2018

    • Author(s)
      J. Sawanphol, R. Soontornvorn and H. Fujioka
    • Organizer
      電気関係学会九州支部第71回連合大会発表
    • Related Report
      2018 Annual Research Report
  • [Presentation] B-Spline Trajectory Planning with Curvature Constraint2018

    • Author(s)
      H. Kano and H. Fujioka
    • Organizer
      2018 American Control Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Modeling ECG Waveform Using Optimal Smoothing B´ezier-Bernstein Curves2017

    • Author(s)
      R. Soontornvorn, H. Fujioka, V. Chutchavongz and K. Janchitrapongvej
    • Organizer
      TENCON 2017 - 2017 IEEE Region 10 Conference
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Design of Compact B-spline Curves Using Optimal Control Point Selection2017

    • Author(s)
      H. Fujioka, R. Soontornvorn and H.Kano
    • Organizer
      49th ISCIE International Symposium on Stochastic Systems Theory and Its Applications
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Reconstructing Dynamic Font-based Chinese Characters using Support Vector Machine2017

    • Author(s)
      H. Fujioka, W. Zhu, A. Hidaka and H.Kano
    • Organizer
      IEEE International Conference on Systems, Man, and Cybernetics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Development of TANZAKU Calligraphy Training System using Augmented Reality and Dynamic Font2016

    • Author(s)
      Rachanart Soontornvorn, Hiroyuki Fujioka and Takeshi Shimoto
    • Organizer
      TENCON 2016 - 2016 IEEE Region 10 Conference
    • Place of Presentation
      Marina Bay Sands, Singapore
    • Year and Date
      2016-11-22
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Spline Trajectory Planning for Path with Piecewise Linear Boundaries2016

    • Author(s)
      Hiroyuki Kano and Hiroyuki Fujioka
    • Organizer
      The 9th Eurosim Congress on Modelling and Simulation (EUROSIM2016)
    • Place of Presentation
      Oulu, Finland
    • Year and Date
      2016-11-12
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] Data compression of Digital-Ink using B-spline approach with sparse coding2016

    • Author(s)
      Hiroyuki Fujioka and Hiroyuki Kano
    • Organizer
      The 2016 IEEE International Conference on Systems, Man, and Cybernetics (SMC 2016)
    • Place of Presentation
      Budapest, Hungary
    • Year and Date
      2016-10-09
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Training System on TANZAKU Calligraphy Skills by Augmented Reality2016

    • Author(s)
      Rachanart Soontornvorn and Hiroyuki Fujioka
    • Organizer
      平成28年度(第69回)電気・情報関係学会九州支部連合大会
    • Place of Presentation
      宮崎大学・宮崎市
    • Year and Date
      2016-09-29
    • Related Report
      2016 Research-status Report
  • [Presentation] ダイナミックフォント法を用いた中国語フォントの再設計法2016

    • Author(s)
      朱文莉、藤岡寛之
    • Organizer
      平成28年度(第69回)電気・情報関係学会九州支部連合大会
    • Place of Presentation
      宮崎大学・宮崎市
    • Year and Date
      2016-09-29
    • Related Report
      2016 Research-status Report
  • [Remarks]

    • URL

      http://www.fit.ac.jp/~fujioka

    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2020-03-30  

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