Filters








116 Hits in 5.2 sec

Ballistics Image Processing and Analysis for Firearm Identification [chapter]

Dongguang Li
2009 Image Processing  
All these would bring many difficulties to feature extracting and identifying. The lighting conditions for the image capturing of cartridge case is crucially importance.  ...  Forensic ballistics imaging has the capacity to produce highresolution digital images of cartridge cases and projectiles for matching to a library of ballistics images [9] .  ...  Ballistics Image Processing and Analysis for Firearm Identification, Image Processing, Yung-Sheng Chen (Ed.), ISBN: 978-953-307-026-1, InTech, Available from: http://www.intechopen.com/books/image-processing  ... 
doi:10.5772/7050 fatcat:k5es6ihxgfay7jhnhswm7vplcq

Firearm Classification Based on Numerical Features of the Firing Pin Impression

Choong-Yeun Liong, Nor Azura Md Ghani, Saadi Bin Ahmad Kamaruddin, Abdul Aziz Jemain
2012 Procedia Computer Science  
In this study, a total of 68 features of firing pin impression images -20 basic statistical features, and 48 geometric moment features up to the sixth orderwere extracted from three regions of the firing  ...  In order to solve the crime cases, firearm identification is becoming vital. Unique marks are left on the bullet and the cartridge case when a firearm is fired.  ...  In addition, special gratitude to University Kebangsaan Malaysia and the Ministry of Higher Education Malaysia (MOHE) for the Research Grant No. UKM-ST-06-FRGS0183-2010.  ... 
doi:10.1016/j.procs.2012.09.123 fatcat:hk6fj2zqcneafbbiydxhfv656u

Automated bullet-identification system based on surface topography techniques

F. Xie, S. Xiao, L. Blunt, W. Zeng, X. Jiang
2009 Wear  
A 3D quantitative approach for bullet identification is proposed in this paper. In this system the surface topography of the whole bullet can be acquired for analysis and identification.  ...  In the past decade, engineers have created automated ballistics identification systems that meld traditional comparison microscopes with digital cameras, computers, huge databases, and image analysis techniques  ...  Feature extraction of bullet marks based on surface topography techniques Firearm identification is concerned with two types of characteristics of firearm: class and individual.  ... 
doi:10.1016/j.wear.2008.04.081 fatcat:47yagruncnexrn27mw53wvmbc4

A survey of image processing techniques and statistics for ballistic specimens in forensic science

George Gerules, Sanjiv K. Bhatia, Daniel E. Jackson
2013 Science & justice  
of recent investigations on the image processing techniques used to match spent bullets and cartridge cases.  ...  We also provide a discussion of the strengths and weaknesses of these methods for both image matching and statistical uniqueness.  ...  Comparing images of ballistic specimens After processing the images to remove noise and extract the objects of interest, we need to compare the images for a match.  ... 
doi:10.1016/j.scijus.2012.07.002 pmid:23601735 fatcat:ok7tmmxvgjbrrdj4yrporgj4yu

A Quick Fired Case-Firearm Determination from the 102 Mass Shooting Incidents in the U.S

John Zheng Wang
2016 Foresic Research & Criminology International Journal  
Based on ballistic design features, ten categories of fired cartridge cases were collected and analyzed for a quick determination between a fired cartridge case and a firearm.  ...  A quick determination of the type of a firearm involved is always a crucial factor for the police to process a shooting scene properly.  ...  Finally, a ballistic design analysis with identification tips summarizes the key features of each individual type of fired cartridge case-firearm relationship.  ... 
doi:10.15406/frcij.2016.03.00088 fatcat:qsorb7zenfajrn7kmx3hni7dmm

Learning-based ballistic breech face impression image matching

Joseph Roth, Andrew Carriveau, Xiaoming Liu, Anil K. Jain
2015 2015 IEEE 7th International Conference on Biometrics Theory, Applications and Systems (BTAS)  
Specifically, after a global alignment between the reference and probe images, we unroll them into the polar coordinate for robust feature extraction and global registration.  ...  Ballistic images of a cartridge case or bullet carry distinct "fingerprints" of the firearm, which is the foundation of widely used forensic examination in criminal investigations.  ...  Acknowledgment The authors thank Xiaoyu Zheng, John Song, Theodore Vorburger, Mingsi Tong, Gregoire Michaud, and the anonymous reviewers for their constructive comments.  ... 
doi:10.1109/btas.2015.7358774 dblp:conf/btas/RothCLJ15 fatcat:iphxlghf6jhklhaggtk7oritay

Topography measurements and applications in ballistics and tool mark identifications

T V Vorburger, J Song, N Petraco
2015 Surface Topography Metrology and Properties  
We describe here some of these measurement methods as well as several analytical methods for assessing similarities and differences among pairs of surfaces.  ...  We also provide a few examples of research results to identify cartridge cases originating from the same firearm or tool marks produced by the same tool.  ...  Acknowledgments The authors are grateful to J Yen and B Muralikrishnan for their review of the manuscript and to a number of experts for discussions and correspondence about their work, including S Levesque  ... 
doi:10.1088/2051-672x/4/1/013002 pmid:27182440 pmcid:PMC4864997 fatcat:3t5dto35vbdpje7y36rod7xjte

Interpol review of forensic firearm examination 2016-2019

Erwin J.A.T. Mattijssen
2020 Forensic Science International: Synergy  
This review paper covers the relevant literature on forensic firearm examination from 2016 to 2019 as a part of the 19th Interpol International Forensic Science Managers Symposium.  ...  The results of the comparison algorithm, using these extracted features, do not depend on image orientation and could for instance be applied as a preliminary, but fast search in a larger database.  ...  The factors that influence the effectiveness of ballistic imaging databases were studied using Evofinder. Overall the effectiveness for bullets seems to be higher than for cartridge cases.  ... 
doi:10.1016/j.fsisyn.2020.01.008 pmid:33385138 pmcid:PMC7770411 fatcat:ld4ekjtvizhxblcw4ccd2gj4ky

Automatically matching topographical measurements of cartridge cases using a record linkage framework [article]

Xiao Hui Tai, William F. Eddy
2020 arXiv   pre-print
Using a diverse collection of images of over 1,100 cartridge cases, we find that overall performance is generally improved using topographical data.  ...  For automatic methods, a fuller investigation into their fairness and robustness is necessary before they can be deployed in practice.  ...  Features for each record At an individual record level, the data need to be pre-processed before useful features can be extracted.  ... 
arXiv:2003.00060v1 fatcat:w5lacmhk6va6hps7v57rsy22qy

Content based information retrieval in forensic image databases

Zeno Geradts, Jurrien Bijhold
2002 Journal of Forensic Sciences  
Forensic image databases of fingerprints, faces, shoeprints, handwriting, cartridge cases, drugs tablets, and tool marks are described.  ...  This paper gives an overview of the various available image databases and ways of searching these databases on image contents.  ...  Ballistic Imaging Systems Databases of Cartridge Cases 54 The methods of image matching applied in these systems are not known.  ... 
pmid:11908596 fatcat:jig4opuyc5ab3pgibdp2cecdty

Estimating error rates for firearm evidence identifications in forensic science

John Song, Theodore V. Vorburger, Wei Chu, James Yen, Johannes A. Soons, Daniel B. Ott, Nien Fan Zhang
2018 Forensic Science International  
This paper describes the recently developed congruent matching cells (CMC) method for image comparisons, its application to firearm evidence identification, and its usage and initial tests for error rate  ...  Four identification parameters are defined for quantifying both the topography similarity of the correlated cell pairs and the pattern congruency of the registered cell locations.  ...  Fadul of the Miami-Dade Crime Lab and to T. Weller for providing test samples, to X. Zheng of NIST for providing the topography images, to R. Silver, R.M. Thompson, and S. Ballou of NIST for their  ... 
doi:10.1016/j.forsciint.2017.12.013 pmid:29331680 pmcid:PMC5961495 fatcat:ibiepgbh4ng6bh5uz33pbatxz4

Forensic surface metrology: tool mark evidence

Carol Gambino, Patrick McLaughlin, Loretta Kuo, Frani Kammerman, Peter Shenkin, Peter Diaczuk, Nicholas Petraco, James Hamby, Nicholas D. K. Petraco
2011 Scanning  
Finally, suggestions are made for practical courtroom application of CPT for assigning levels of confidence to SVM identifications of tool marks recorded with confocal microscopy. SCANNING 33: 1-7,  ...  Extracted waviness profiles were processed with principal component analysis (PCA) for dimension reduction.  ...  Gerard Petillo, independent forensic firearm examiner, for advice on this study and many valuable discussions.  ... 
doi:10.1002/sca.20251 pmid:21710632 fatcat:wv2z2gynq5dtfkg3rhr6rdajmm

Vibrational spectroscopy and chemometrics in GSR: review and current trend

Bharti Jain, Poonam Yadav
2021 Egyptian Journal of Forensic Sciences  
Short conclusion As a final point, the end of part of this review deals with the applicability of chemometric methods in forensic ballistics.  ...  We select to give an elaborate description of many significant tools established with their algorithm in admire of utilizing and accepting them by researchers not very aware with chemometrics.  ...  When band procedure was done of organic and inorganic of GSR then GSLW, pre-processing was used for reducing the disperse features of every caliber and separating of residues based on caliber by PCA tool  ... 
doi:10.1186/s41935-021-00229-3 fatcat:xnmves2fenetneenb5wfzxb2aa

Allocation of Individual Attributes on Digital Images of the Firing Pin Traces
ВЫДЕЛЕНИЕ ИНДИВИДУАЛЬНЫХ ПРИЗНАКОВ НА ЦИФРОВЫХ ИЗОБРАЖЕНИЯХ СЛЕДОВ БОЙКОВ

V. A. Fedorenko, Education Research Institute of Nanostructures and Biosystems of the Saratov State University, M. V. Kornilov, Education Research Institute of Nanostructures and Biosystems of the Saratov State University
2014 Izvestiya of Saratov University New Series Series Economics Management Law  
Key words: traces of the firing pin, cartridge cases database, digital imaging, identification of weapons, automated ballistic identification system.  ...  Efficient algorithms for feature extraction of the form of large irregularly shaped spots by applying the Wiener filter and method Niblek developed.  ... 
doi:10.18500/1994-2540-2014-14-1-2-181-186 fatcat:pyj3cqmnczgnpd7in4zwmcgste

DNA recovery from fired hollow point ammunition

Nicholas Booth, Brendan Chapman
2019 Australian Journal of Forensic Sciences  
Current methods for identification of cartridges and bullets from crime scenes involve the use of comparison microscopes for class and individual characteristics generated by the firearm.  ...  Results for identification of those who have handled cartridge cases through DNA profiling has been found to be consistently reliable in controlled laboratory settings if appropriate and thorough recovery  ...  Network for identification of the weapon.  ... 
doi:10.1080/00450618.2019.1568566 fatcat:wxrlmcl53nbnbgerep4hjp4qvy
« Previous Showing results 1 — 15 out of 116 results