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Detection of traced handwriting by information sensing on the appearance of its strokes

Research Project

Project/Area Number 15K00260
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Perceptual information processing
Research InstitutionNational Research Institute of Police Science

Principal Investigator

Akao Yoshinori  科学警察研究所, 法科学第四部, 室長 (30356159)

Project Period (FY) 2015-04-01 – 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 2017: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Keywords情報センシング / 筆跡 / 質感 / 複眼画像
Outline of Final Research Achievements

Traced handwriting is a representative of unnatural handwriting which have to be detected in the process of forensic handwriting examination. Therefore in this study, a method and an index for the detection of traced handwriting was introduced by sensing the information related to material characteristics appeared on handwritten strokes. Compound-eye polarization imaging system with coaxial illumination module was newly developed for this purpose. The image information acquired by the system was processed and the relationship with dynamics of pen tip movement during handwriting behavior were analyzed. The relationship with experts’ point of view was also investigated. An experimental result for ballpoint pen showed that the ratio between two polarization images at different status was considered to be related with pen pressure.

Academic Significance and Societal Importance of the Research Achievements

本研究の成果は,筆跡の質感から知覚される書字運動に関する情報が,限られた部分ではあるが測定に基づいて得られることを示すものであり,知覚情報処理の学術分野に貢献した.また複眼光学系を用いて偏角反射特性を効率的に計測する手法は,新たな情報センシング手法を提供した.筆跡鑑定は,現状では熟練者の目視に頼っているが,その一部に測定を導入し,客観化と数量化できる可能性が見込まれるなどの社会的意義も認められた.

Report

(5 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report

Research Products

(20 results)

All 2018 2017 2016 2015

All Journal Article Presentation

  • [Journal Article] Differentiation of black writing ink on paper using luminescence lifetime by time-resolved luminescence spectroscopy2017

    • Author(s)
      Suzuki Mototsugu、Akiba Norimitsu、Kurosawa Kenji、Akao Yoshinori、Higashikawa Yoshiyasu
    • Journal Title

      Forensic Science International

      Volume: 279 Pages: 281-287

    • DOI

      10.1016/j.forsciint.2017.09.003

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 文書鑑定における画像情報の利用2017

    • Author(s)
      赤尾 佳則
    • Journal Title

      映像情報メディア学会誌

      Volume: 71 Pages: 508-512

    • NAID

      130007666629

    • Related Report
      2017 Research-status Report
  • [Journal Article] 文書鑑定における画像情報の利用2017

    • Author(s)
      赤尾佳則
    • Journal Title

      映像情報メディア学会誌

      Volume: 71

    • NAID

      130007666629

    • Related Report
      2016 Research-status Report
    • Peer Reviewed
  • [Presentation] Compound-imaging for forensic handwriting examination2018

    • Author(s)
      Yoshinori Akao
    • Organizer
      The Eighth Japan-Korea Workshop on Digital Holography and Information Photonics (DHIP2018)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] 複眼画像処理による筆跡画線の観察2018

    • Author(s)
      赤尾 佳則,菅原 滋,東川 佳靖,関 陽子
    • Organizer
      日本法科学技術学会第24回学術集会
    • Related Report
      2018 Annual Research Report
  • [Presentation] Evaluation of the distance between averaged handwritten shape and fonts by Earth Mover's Distance2017

    • Author(s)
      Yoshinori Akao, Yoshiyasu Higashikawa
    • Organizer
      IGS2017 (18th Biennial Conference of the International Graphonomics Society)
    • Place of Presentation
      Angioino-Aragonese Castle(Gaeta, ITALY)
    • Year and Date
      2017-06-18
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 同軸落射照明下での複眼画像観察における筆跡画線の表面反射光の低減2017

    • Author(s)
      赤尾 佳則
    • Organizer
      2017年第64回応用物理学会春季学術講演会
    • Place of Presentation
      パシフィコ横浜(神奈川県横浜市)
    • Year and Date
      2017-03-14
    • Related Report
      2016 Research-status Report
  • [Presentation] Compound-eye imaging for forensics2017

    • Author(s)
      Yoshinori Akao
    • Organizer
      The Seventh Korea-Japan Workshop on Digital Holography and Information Photonics (DHIP2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Evaluation of the distance between averaged handwritten shape and fonts by Earth Mover's Distance2017

    • Author(s)
      Yoshinori Akao, Yoshiyasu Higashikawa
    • Organizer
      18th Conference of the International Graphonomics Society (IGS2017)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] A Case Study of the Relationship between Local Pen Action and Three Dimensional Shapes of Handwritten Strokes2017

    • Author(s)
      Yoshinori Akao, Yoshiyasu Higashikawa
    • Organizer
      First International Workshop on Computational Document Forensics
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] Visualizing gloss area on handwritten strokes by compound-eye polarization images under coaxial illumination2017

    • Author(s)
      Yoshinori Akao
    • Organizer
      OPIC2017 (OPTICS & PHOTONICS International Congress 2017)
    • Related Report
      2017 Research-status Report 2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 深層学習による書体デザイン識別の試み2017

    • Author(s)
      赤尾 佳則,東川 佳靖,関 陽子
    • Organizer
      日本法科学技術学会第23回学術集会
    • Related Report
      2017 Research-status Report
  • [Presentation] 同軸落射照明型複眼カメラによる書字ダイナミクスの異なる筆跡画線の観察2017

    • Author(s)
      赤尾 佳則
    • Organizer
      Optics and Photonics Japan 2017
    • Related Report
      2017 Research-status Report
  • [Presentation] Integrating compound-eye image under coaxial illumination for analyzing gloss on handwritten strokes2016

    • Author(s)
      Yoshinori Akao
    • Organizer
      The Sixth Japan-Korea Workshop on Digital Holography and Information Photonics (DHIP2016)
    • Place of Presentation
      Sapporo Convention Center (Sapporo, Hokkaido, JAPAN)
    • Year and Date
      2016-12-19
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Presentation] 平均的な筆跡字形とフォントとの距離-EMDによる評価ー2016

    • Author(s)
      赤尾 佳則,東川佳靖
    • Organizer
      日本法科学技術学会第22回学術集会
    • Place of Presentation
      中野サンプラザ(東京都中野区)
    • Year and Date
      2016-11-10
    • Related Report
      2016 Research-status Report
  • [Presentation] 複眼カメラによるボールペン筆跡の光沢状態の観察2016

    • Author(s)
      赤尾 佳則
    • Organizer
      日本光学会年次学術講演会 Optics & Photonics Japan 2016
    • Place of Presentation
      筑波大学文京校舎(東京都文京区)
    • Year and Date
      2016-10-30
    • Related Report
      2016 Research-status Report
  • [Presentation] 文書鑑定に生きる光技術2015

    • Author(s)
      赤尾 佳則
    • Organizer
      2015年(平成27年度)応用物理学会九州支部講演会
    • Place of Presentation
      琉球大学(沖縄県西原町)
    • Year and Date
      2015-12-06
    • Related Report
      2015 Research-status Report
    • Invited
  • [Presentation] KDEとEMDによる平均的な筆跡字形との距離指標2015

    • Author(s)
      赤尾 佳則,東川 佳靖
    • Organizer
      日本法科学技術学会第21回学術集会
    • Place of Presentation
      柏の葉カンファレンスセンター(千葉県柏市)
    • Year and Date
      2015-11-12
    • Related Report
      2015 Research-status Report
  • [Presentation] 文書表面を観察するための複眼カメラ用同軸落射照明装置の開発2015

    • Author(s)
      赤尾 佳則,東川 佳靖,谷田 純
    • Organizer
      日本光学会年次学術講演会 Optics & Photonics Japan 2015
    • Place of Presentation
      筑波大学東京キャンパス(東京都文京区)
    • Year and Date
      2015-10-28
    • Related Report
      2015 Research-status Report
  • [Presentation] Gonio-observation of handwritten strokes by using coaxial illumination module and compound-eye image-capturing system2015

    • Author(s)
      Yoshinori Akao, Yoshiyasu Higashikawa, Jun Tanida
    • Organizer
      JSAP-OSA Joint Symposia 2015
    • Place of Presentation
      Nagoya Congress Center (Natoya, Aichi, JAPAN)
    • Year and Date
      2015-09-13
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research

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Published: 2015-04-16   Modified: 2020-03-30  

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