拡張Jaccard係数に基づく撃針痕の3次元断面形状による異同識別

• 仁戸部 勤

  科学警察研究所

• 安野 拓也

  科学警察研究所

• 金子 俊一

  北海道大学大学院

書誌事項

タイトル別名

• Firearm Classification based on Extensive Jaccard Index of 3D Cross-sectioned Shape of Firing Pin Impression on Fired Cartridge Cases

抄録

A classification technique of using a new feature named ‘Extended Jaccard index” of cross-sectional shapes of firing pin impression is proposed. The three-dimensional data of the marks on the cartridge cases are measured by a confocal microscopy. After measurement of marks, horizontal and vertical cross-sectional shapes of firing pin impression are effectively extracted. A similarity between the two cartridge cases is designed on these shapes, and the similarities are divided into the identical firearm group and the different firearm group by the quadratic discriminant analysis. As a result, the new feature-based cross-sectional shape evaluation is effective in firearm classification.

収録刊行物

• 精密工学会誌

  精密工学会誌 83 (4), 355-360, 2017

  公益社団法人 精密工学会

キーワード

• cartridge case
• firing pin impression
• cross section
• similarity
• firearms identification
• Jaccard index

詳細情報

• CRID: 1390282679805516672
• NII論文ID: 130005548961
• DOI: 10.2493/jjspe.83.355
• ISSN: 1882675X
• ISSN: 09120289
• Web Site: https://www.jstage.jst.go.jp/article/jjspe/83/4/83_355/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可