“AMIS-Shot” makes it possible to identify weapons by bullets and shells recovered from a crime scene with the purpose of efficiently solving criminal cases.

Implementation of the system by law-enforcement agencies results in a considerable improvement of the clearance rate and improves the overall security of the civil society.

“AMIS-Shot”:

  • lets you create electronic bullet and shell casing repositories containing tens and hundreds of thousands of objects;
  • dramatically improves the quality of trace examination of shot bullets, their fragments and shells when investigating crimes committed with the use of firearms.

Problems solved by “AMIS-Shot”

  • Creation of automated databases of bullets and shells from weapons registered with law enforcement agencies;
  • Creation of automated databases of bullets and shells found at crime scenes;
  • Automation of search operations aimed at identifying weapons by traces on shot bullets and shells.
  • Automation of comparative examination of bullets and shells when working with databases and performing the analysis of recommendation lists based on search results;
  • Automation of the process of documenting the results of examinations.

 

Mathematical algorithms of “AMIS-Shot”

“AMIS-Shot” uses a high-precision algorithm based on years of forensic practice to encode and recognize images. The proprietary technique used in the software for processing complex image-related information (2D+3D) when comparing the traces of the striker pin considerably improved the selectiveness of this type of search.

Here are just some of the program features:

  • Creation of four database arrays: registered bullets, registered shells, criminal bullets, criminal shells.
  • Separation of weapons being registered by registration types (combat, duty or service weapon, etc).
  • Scanning of the side surface of bullets/shells, shell bottom surface, traces from the shell casing and deformed bullets.
  • Automatic recognition of traces on the shell bottom and support of manual correction by an expert.
  • Interactive selection of traces on the side surface of the shell.
  • Storage of images in a database, WSQ image compression.
  • Creation of profiles and 3D images of object surfaces.
  • Automatic database search by each recognized trace.

Entering bullet and shell images in “AMIS-Shot”

When creating a scanning request, the user must enter extensive information for each object, be it a bullet or shell – additional data and technical parameters. The system features an editable system of catalogs and dictionaries for simplifying data entry and ensuring consistency.

The scanning process can be very diverse and differ by the state of the bullet (shell). The following parameters can be adjusted: the level and the angle of the lighting sector, as well as the scanner rotation step. Therefore, high-quality trace images require a special technique of scanning that covers the entire depth of deformation layer by layer. At the end of the process, the layers are merged after the selection of image areas with the best quality.

Information obtained during layer-by-layer scanning is used for generating 3D images and surface profiles.

The scanner is controlled by specialized scanning software.

System architecture

Configuration of the “AMIS-Shot” system is determined by the size of the database and the required number of workstations. TCP/IP is used as the default data exchange protocol.

The core of the system is based on the client/server architecture that supports independent communication of workstations to the central server processing their requests.

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