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NCJ Number: NCJ 182567   Add to Shopping cart   Find in a Library
Title: Ballistics Matching Using 3D Images of Bullets and Cartridge Cases: Final Report
  Document URL: PDF 
Author(s): Benjamin Bachrach
Corporate Author: Intelligent Automation, Inc
United States of America
Date Published: 1999
Page Count: 55
  Annotation: This report presents the methodology and findings of a study designed to determine whether three-dimensional (3D) information from a bullet's surface can be successfully exploited to improve the matching rate of existing automated search and retrieval systems.
Abstract: This required the development and implementation of all the elements of an acquisition component. Moreover, this particular acquisition component operated based on 3D captured data, as opposed to 2D captured data. Together with the acquisition component, a preliminary version of a correlation component was developed to verify the usefulness of the 3D captured data. The complete automated search and retrieval system was tested by two types of independent evaluations. The first evaluation involved bullets being fired by three different guns whose barrels were manufactured consecutively. The challenge to the system was to group the different bullets correctly. This set of bullets was used to "tune" the many parameters in the numerical algorithms of the system. The second type of evaluation was meant to emulate a more "real life" situation. These evaluations involved so-called "blind tests." Researchers were provided with both control bullets from different guns and with questioned bullets. The task was to identify which gun fired each of the questioned bullets based on the data obtained from the control bullets. Two sets of tests were performed, the first with six guns and the second with five guns. In both cases the system was able to correctly identify which gun fired each of the questioned bullets. 22 exhibits
Main Term(s): Police management
Index Term(s): Evidence collection ; Ballistics ; Firearms identification ; Forensics/Forensic Sciences
Sponsoring Agency: National Institute of Justice (NIJ)
US Department of Justice
Office of Justice Programs
United States of America
Grant Number: 97-LB-VX-0008
Sale Source: NCJRS Photocopy Services
Box 6000
Rockville, MD 20849-6000
United States of America

Intelligent Automation, Inc
15400 Calhoun Drive, Suite 400
Rockville, MD 20855
United States of America
Type: Report (Study/Research)
Country: United States of America
Language: English
Note: Dataset may be archived by the NIJ Data Resources Program at the National Archive of Criminal Justice Data
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