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Analysis of Handwriting Variation and Development of High Performance Computer-Based System to Support Forensic Examination of Japanese Documents

Research Project

Project/Area Number 15500163
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field 情報図書館学・人文社会情報学
Research InstitutionNara National College of Technology

Principal Investigator

UEDA Katsuhiko  Nara National College of Technology, Department of Information Engineering, Professor, 情報工学科, 教授 (30043459)

Co-Investigator(Kenkyū-buntansha) MATSUO Ken'ichi  Nara National College of Technology, Department of Information Engineering, Associate Professor, 情報工学科, 助教授 (10259913)
NAKAMURA Yoshikazu  Nara National College of Technology, Department of Electrical Engineering, Associate Professor, 電気工学科, 助教授 (20110249)
Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥3,000,000 (Direct Cost: ¥3,000,000)
Fiscal Year 2004: ¥1,300,000 (Direct Cost: ¥1,300,000)
Fiscal Year 2003: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsHandwriting examination / Analysis of handwriting variation / Handwriting individuality / Extraction of handwriting / Document image analysis / 筆跡変動解析 / 筆跡鑑定支援システム / 対話型支援システム / 文書画像処理
Research Abstract

This research project has been carried out over two years (2003-2004). The aims of this research project are to establish individuality of handwriting and to develop a high performance support system for forensic document examination. We were able to achieve the aim of this research project. The summary of results obtained by the research project are as follows :
(1) We have improved a handwriting extraction method by adding color information to the conventional extraction method. Through an experiment, it confirmed that this extraction method can extract precisely handwriting and seal imprint from various types of documents, even if handwriting and seal imprint are superimposed each other.
(2) Forensic handwriting examination is based on the hypothesis that each individual person has consistent handwriting that is distinct from the handwriting of other individuals. This hypothesis has accepted subjectively through many case studies. However the individuality of handwriting has not been established with scientific and quantitative rigor, therefore its admissibility as forensic evidence can be questioned. We proposed a method for validating handwriting individuality using a "variation entropy" and a writer verification experiment based on the pattern matching method. Through the experiments, it was confirmed that the variation entropy was appropriate for evaluating the variation of handwriting as whole shape. We got a prospect to be possible of validating handwriting individuality by combining the variation entropy and writer verification results.
(3) We have developed a measurement tool of handwriting stroke structure. We are now investigating on the individuality of stroke structures of handwriting by using a statistical analysis method.
We aim to develop a complete system to support forensic document examination by combining above results in the future.

Report

(3 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • Research Products

    (16 results)

All 2005 2004 2003 Other

All Journal Article (12 results) Publications (4 results)

  • [Journal Article] A Computer-Based System to Support Forensic Analysis of Japanese Handwriting2005

    • Author(s)
      Katsuhiko Ueda
    • Journal Title

      Journal of Forensic Document Examination 16(in Press)

      Pages: 41-56

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A Computer-Based System to Support Forensic Analysis of Japanese Handwriting.2005

    • Author(s)
      Katsuhiko Ueda
    • Journal Title

      Journal of Forensic Document Examination 16(in Press)

      Pages: 41-56

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A Computer-Based System to Support Forensic Analysis of Japanese Handwriting2005

    • Author(s)
      Katsuhiko Ueda
    • Journal Title

      Journal of Forensic Document Examination 16(掲載予定)

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A Comparison of the Arabic Numerals One through Nine Written by Adults from Native English Speaking vs. Non-native English Speaking Countries2004

    • Author(s)
      Marvin L.Simner
    • Journal Title

      Journal of Forensic Document Examination 15

      Pages: 1-16

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Automatic Extraction of Filled-in Items from Bank-check Images2004

    • Author(s)
      Katsuhiko Ueda
    • Journal Title

      Proceedings of the 6^<th> IAPR International Workshop on Document Analysis Systems

      Pages: 225-228

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Annual Research Report 2004 Final Research Report Summary
  • [Journal Article] A Comparison of the Arabic Numerals One through Nine Written by Adults from Native English Speaking vs. Non-native English Speaking Countries.2004

    • Author(s)
      Marvin L. Simner
    • Journal Title

      Journal of Forensic Document Examination 15

      Pages: 1-16

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] 日本字筆跡の変動解析と筆跡個性に関する基礎的検討2004

    • Author(s)
      上田勝彦
    • Journal Title

      情報処理学会人文科学とコンピュータ研究会研究報告 2004-CH-63

      Pages: 1-6

    • NAID

      110002911121

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Investigation of Off-Line Japanese Signature Verification Using a Pattern Matching2003

    • Author(s)
      Katsuhiko Ueda
    • Journal Title

      Proceedings of the 7^<th> International Conference on Document Analysis and Recognition

      Pages: 951-955

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] OCR-Aided Preparation of Handwriting Comparison Charts for the Forensic Examination of Japanese Documents2003

    • Author(s)
      Katsuhiko Ueda
    • Journal Title

      Forensic Science International 136・Suppl.1

      Pages: 79-79

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A Computer-Based System to Support Forensic Analysis of Japanese Handwriting2003

    • Author(s)
      Katsuhiko Ueda
    • Journal Title

      Proceedings of the 11^<th> Conference of the International Graphonomics Society

      Pages: 286-290

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] OCR-Aided Preparation of Handwriting Comparison Charts for the Forensic Examination of Japanese Documents.2003

    • Author(s)
      Katsuhiko Ueda
    • Journal Title

      Forensic Science International 136,Suppl.1

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] A Computer-Based System to Support Forensic Analysis of Japanese Handwriting.2003

    • Author(s)
      Katsuhiko Ueda
    • Journal Title

      Proceedings of the 11^<th> Conference of the International Graphonomics Society

      Pages: 286-290

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Publications] Katsuhiko Ueda: "Investigation of Off-Line Japanese Signature Verification Using a Pattern Matching"Proceedings of the 7^<th> International Conference on Document Analysis and Recognition. 951-955 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Katsuhiko Ueda: "OCR-Aided Preparation of Handwriting Comparison Charts for the Forensic Examination of Japanese Documents"Forensic Science International. 136・Suppl.1. 79 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Katsuhiko Ueda: "A Computer-Based System to Support Forensic Analysis of Japanese Handwriting"Proceedings of the 11^<th> Conference of the International Graphonomics Society. (掲載予定). 286-290 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Marvin L.Simner: "A Comparison of the Arabic Numerals One through Nine Written by Adults from Native English Speaking vs. Non-native English Speaking Countries"Journal of Forensic Document Examination. (2004)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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