弹头痕迹多尺度扩展分形检验分析  

Multiscale Extended Fractal Analysis for Identifying Bullet Engraving

作　　者：杨敏[1] 牟丽[2] 

机构地区：[1]广东警官学院刑事技术系,广东广州510232 [2]广东警官学院计算机系,广东广州510232

出　　处：《兵工学报》2009年第6期677-681,共5页Acta Armamentarii

基　　金：公安部科技资助项目(批准号:2007YYCXGDST077)

摘　　要：弹头痕迹的分析与比对是破获涉枪案件的关键之一,目前国内外在这方面主要采用对弹头痕迹的几何形态、位置及线条进行比对的方法。在分析弹头膛线痕迹区域形成特点的基础上,结合分形能够描述复杂自然物体表面的特点,提出了使用扩展分形模型描述弹头膛线区域痕迹,给出了弹头痕迹种类与同一检验的多尺度扩展分形分析方法及其相关算法。研究结果表明,该方法用于弹头痕迹检验是可行和有效的。本文的方法为枪弹痕迹的司法分析与鉴定提供了新的思路,扩展了司法弹道学的研究方法。Analysis and comparison of bullet engraving are one of the keys for unearthing the case relat- ed to the gun. A method of comparing geometric morphologies, positions and striations among the bullet engravings is mainly used domestically and abroad at present. An extended fractal model describing bullet engraving in rifle area was established, and the multiscale extended fractal analysis methods and their algorithms used for classifying and identifying individually were proposed, on the basis of analyzing forming characteristics of the engraving and describing complex surface characteristics of the natural body by fractal analysis. The researched results show that the methods are feasible and effective for checking bullet engraving. A new thinking of checking bullet engraving can be provided by the methods for judicial analysis and expert testimony, a researching method of judicial ballistics can be extended.

关 键 词：信息处理技术 弹头痕迹 多尺度 扩展分形 司法弹道学 

分 类 号：D918[政治法律—法学]