弹头痕迹图像分形动力学研究

发布时间：2018-02-03 15:22

本文关键词： 刑法学弹头痕迹分形维数多重分形分形动力学磨损程度司法弹道学分形结构痕迹图像多度域分形　出处：《兵工学报》2009年04期 　论文类型：期刊论文

【摘要】：弹头痕迹的分析与比对是破获涉枪案件的关键,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,提出了使用分形理论分析弹头痕迹的新方法,将弹头痕迹的图像映射到一维目标信号,通过对目标信号进行频率域分形维数分析,发现弹头痕迹频率域具有多度域分形特征,且其分形结构与枪膛对应部位的磨损状况有对应关系,得到一些有意义的结论。研究结论表明,所提出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。
[Abstract]:The analysis and comparison of warhead trace is the key to solve the case of gun. At present, the geometric form of warhead trace is mainly used in this field at home and abroad. On the basis of analyzing the forming characteristics of warhead rifling trace area, combining with fractal can describe the characteristics of complex natural object surface. A new method of warhead trace analysis based on fractal theory is proposed. The image of warhead trace is mapped to one dimensional target signal, and the fractal dimension of target signal is analyzed in frequency domain. It is found that the frequency domain of warhead trace has the fractal characteristic of multi-degree domain, and its fractal structure has the corresponding relation with the wear condition of the corresponding part of the gun, and some meaningful conclusions are obtained. The proposed method provides a new idea for the judicial analysis and identification of bullet traces, and extends the research method of judicial ballistics.
【作者单位】：广东警官学院刑事技术系;广东警官学院计算机科学与技术系;
【基金】：公安部科技应用创新项目(2007YYCXGDST077)
【分类号】：D918.2
【正文快照】： 0引言近年来,我国持枪犯罪案件数量以及犯罪分子用于作案的枪种均呈增加的趋势,需要作刑事鉴定的弹头、弹壳数量极大,枪弹痕迹趋于复杂化[1]。准确快速地鉴定和分析枪弹痕迹将对持枪案件的侦破起着重要作用。目前,对弹头痕迹的识别仍然采用直接观察比对(用眼睛或仪器)的经验

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