Izvestiya of Saratov University.
ISSN 1994-2540 (Print)
ISSN 2542-1956 (Online)

correlation analysis

Identification of Similar Images of Breech Face Impressions by the Correlation Cells Method

Introduction. The current task of forensic ballistic identification is to investigate the breech face impressions on the firing cartridge cases. The paper deals with comparison of images of breech face impressions by correlation cells method. Theoretical analysis. Similarity of images of investigated impressions can be established by a method of the correlation analysis. However, this method is ineffective, because the correlation coefficient is dominated by areas that do not contain useful information.

Methods for Recognition of Weapons of Preliminary Work up Digital Images of Traces on Bullets and Cartridge Cases

In paper investigated methods to improve the quality of digital images of the firing pin traces and traces on fired bullets. Methods of comparison of firing pin traces by means of Euler’s characteristics and methods of comparison of traces on fired bullets by means of the correlation analysis have been considered. Analyzed the firing pin marks on the image cartridges, shot in the Makarov pistol and Colt mod. 1911, as well as marks on the bullets, shot from a Makarov pistol.