کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
95169 160417 2016 10 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Virtual and simulated striated toolmarks for forensic applications
ترجمه فارسی عنوان
آثار ابزار مخطط مجازی و شبیه سازی شده برای برنامه های کاربردی پزشکی قانونی
کلمات کلیدی
آثار ابزار مجازی و شبیه سازی شده. مقایسه عینی؛ toolmarks مخطط؛ مدل ابزار 3D؛ موجک بر اساس تجزیه و تحلیل چند مقیاسی؛ تنوع Toolmark
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آنالیزی یا شیمی تجزیه
چکیده انگلیسی


• Virtual toolmark generation using 3D surface models of screwdrivers.
• Toolmark similarity & variability, dependent on angle of attack with high resolution.
• Automated recovery of the angle of attack used during toolmark creation.
• Simulation of realistic toolmark variation using wavelet analysis.

Large numbers of experimental toolmarks of screwdrivers are often required in casework of toolmark examiners and in research environments alike, to be able to recover the angle of attack of a crime scene mark and to determine statistically meaningful properties of toolmarks respectively. However, in practice the number of marks is limited by the time needed to create them.In this article, we present an approach to predict how a striated mark of a particular tool would look like, using 3D surface datasets of screwdrivers. We compare these virtual toolmarks qualitatively and quantitatively with real experimental marks in wax and show that they are very similar. In addition we study toolmark similarity, dependent on the angle of attack, with a very high angular resolution of 1°. The results show that for the tested type of screwdriver, our toolmark comparison framework yields known match similarity scores that are above the mean known non-match similarity scores, even for known match differences in angle of attack of up to 40°. In addition we demonstrate an approach to automatically recover the angle of attack of an experimental toolmark and experiments yield high accuracy and precision of 0.618 ± 4.179°. Furthermore, we present a strategy to study the structural elements of striated toolmarks using wavelet analysis, and show how to use the results to simulate realistic toolmarks.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Forensic Science International - Volume 261, April 2016, Pages 43–52
نویسندگان
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