日本字筆跡の変動解析と筆跡個性に関する基礎的検討(第2報) Experimental Analysis of Variation and Individuality of Japanese Handwriting -Second Report-

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著者

    • 上田 勝彦 UEDA Katsuhiko
    • 大阪電気通信大学短期大学部電子情報学科 Department of Electronics and Information Technology, Osaka Electro-Communication Junior College

抄録

問題となる文書中の筆跡からその筆者を特定する,いわゆる筆跡鑑定,筆者照合,筆者識別などの研究は,個々の筆者は他人の筆跡とは異なる安定した筆跡(筆跡個性)を持っているという仮説に基づいている.この仮説は,長年にわたる多数の事例研究をとおして経験的に広く認められている.しかし鑑定結果の法科学的証拠としての信頼性を高めるためには,科学的・定量的に厳密に検証されなければならない.著者らは先にこのような立場から日本字署名を対照として,変動エントロピーと呼ばれる量と筆者照合実験によって筆跡個性の存在を検証する方法を提案した.本報告では,この手法を日本字の通常筆跡に適用した結果について述べる.さらに,この結果と先の署名筆跡に対する結果とを比較して,筆跡個性の表れ方の字種依存性と筆者依存性について検討し,筆跡個性に関する仮説の成立要件を考察する.The handwriting analysis to determine the writer, such as so-called handwriting examination, writer verification and writer identification is based on the hypothesis that each individual person has consistent handwriting that is distinct from the handwriting of other individuals. This hypothesis has been accepted subjectively through many case studies. However this hypothesis must be established with scientific and quantitative rigor in order to raise its admissibility as forensic evidence. From this point of view, the author proposed a method to validate individuality of Japanese signature by variation entropy and a writer verification experiment previously. This report describes the result that applied this method to normal Japanese handwriting. The author discusses on difference of a property of individuality expression between normal handwriting and signatures. The author discusses also a condition to which the hypothesis about handwriting individuality is accepted.

The handwriting analysis to determine the writer, such as so-called handwriting examination, writer verification and writer identification is based on the hypothesis that each individual person has consistent handwriting that is distinct from the handwriting of other individuals. This hypothesis has been accepted subjectively through many case studies. However this hypothesis must be established with scientific and quantitative rigor in order to raise its admissibiliry as forensic evidence. From this point of view, the author proposed a method to validate individuality of Japanese signature by variation entropy and a writer verification experiment previously. This report describes the result that applied this method to normal Japanese handwriting. The author discusses on difference of a property of individuality expression between normal handwriting and signatures. The author discusses also a condition to which the hypothesis about handwriting individuality is accepted.

収録刊行物

  • 情報処理学会研究報告人文科学とコンピュータ(CH)

    情報処理学会研究報告人文科学とコンピュータ(CH) 2008(8(2008-CH-077)), 27-34, 2008-01-25

    一般社団法人情報処理学会

参考文献:  7件中 1-7件 を表示

各種コード

  • NII論文ID(NAID)
    110006623400
  • NII書誌ID(NCID)
    AN1010060X
  • 本文言語コード
    JPN
  • 資料種別
    Technical Report
  • ISSN
    09196072
  • NDL 記事登録ID
    9373180
  • NDL 雑誌分類
    ZM13(科学技術--科学技術一般--データ処理・計算機)
  • NDL 請求記号
    Z14-1121
  • データ提供元
    CJP書誌  NDL  NII-ELS  IPSJ 
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