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Analysis of Forensic Ballistic Specimens for Firearm Identification Using Supervised Naive Bayes and Decision Tree Classification Technique

  • Muhamad Hasbullah Mohd RazaliEmail author
  • Balkiah Moktar
Conference paper

Abstract

Every crime gun has a story to tell. Recently, the rise of crime cases involving firearms is quite alarming. In ballistics studies, the cartridge cases left by gunshots are important evidences since they act as “fingerprint” to the firearms used. In this study, the secondary data of Legendre Orthogonal Moment (LOM) for the firing pin impression (FPI) images captured from a total of 747 cartridge cases are used. The bullets were shot from five different pistols of the same model namely, type 9 mm Parabellum Vektor SP1, made in South Africa. The method of moment is used in this study since it is more accurate, robust, and less time consuming as compared to the traditional method via comparison microscope. Preliminary analysis using Pearson correlation shows that the features are highly correlated. Therefore, principal component analysis (PCA) was used to analyze the interrelationship among the features and combine them into eight significant component of features while maintaining the information of the original patterns. PCA has reduced the dimensionality of the features. The classification techniques used are naïve Bayes and decision tree analysis on J48 algorithm using the WEKA software due to the simplicity, ability for high dimensionality inputs, and outperformance of these methods than the other more sophisticated classification techniques. Classification results using the naïve Bayes and decision tree techniques show that about 85 and 78.4 % of the images were correctly classified respectively. Hence, the results demonstrate the potential of using numerical features generated by moment of FPI images for firearms identification.

Keywords

Decision tree Firearms identification Firing pin impression Geometric moment Naïve Bayes Statistical features 

References

  1. Ananth JP, Bharathi VS (2012) Face image retrieval system using discrete orthogonal moments. In: 4th international conference on bioinformatics and biomedical technology, 29Google Scholar
  2. Chuan ZL, Ghani NAM, Liong CY, Jemain AA (2013) Pendekatan pengesanan titik sauh secara automatic bagi kesan pin peletup senjata api. Sains Malays 42(9):1339–1344Google Scholar
  3. Field A (2005) Factor analysis using SPSS. J Res Methods 639Google Scholar
  4. Ghani NAM, Kamaruddin SA, Liong CY, Jemain AA (2012) Firearm identification using numerical features of center firing pin impression image. In: International symposium on computer applications and industrial electronics (ISCAIE 2012), Kota Kinabalu Malaysia, pp 293–296Google Scholar
  5. Khalid MH (2007) Exact legendre moment computation for gray level images. Pattern Recognit 3597–3605Google Scholar
  6. Liong CY, Ghani NAM, Kamaruddin SA, Jemain AA (2012) Firearms classification based on numerical features of the firing pin impression. Procedia Comput Sci 13:144–151CrossRefGoogle Scholar
  7. Smith CL (2001) Profile measurements as a technique for forensic ballistics identification. In: Proceeding 5th Australia security research, Perth, Australia, 153–162Google Scholar
  8. Thumwarin (2008) Firearm identification based on rotation invariant feature of cartridge case. In: SICE annual conference 2008, The University Electro-Communications, Japan, pp 45–49Google Scholar

Copyright information

© Springer Science+Business Media Singapore 2016

Authors and Affiliations

  • Muhamad Hasbullah Mohd Razali
    • 1
    Email author
  • Balkiah Moktar
    • 1
  1. 1.Faculty of Computer and Mathematical SciencesUniversiti Teknologi MARAArauMalaysia

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