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Automated Rat Single-Pellet Reaching with 3-Dimensional Reconstruction of Paw and Digit Trajectories

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Estimating shot distance from limited pellets pattern.

Alessio Plebe¹, Domenico Compagnini

¹University of Messina, Italy. aplebe@unime.it

Forensic Science International

|June 5, 2012

Summary

This study introduces a novel method for estimating shooting range using partial pellet patterns, even when the full pellet distribution is unknown. It accurately determines shot distance in challenging forensic cases with void areas adjacent to pellet impacts.

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Area of Science:

Forensic Science
Ballistics
Pattern Analysis

Background:

Traditional shooting range estimation relies on complete pellet pattern analysis.
Existing methods are inaccurate when only a partial pattern is available.
Partial patterns occur when a victim is hit by only a portion of the shot spread.

Purpose of the Study:

To develop a reliable method for estimating shooting range from partial pellet patterns.
To address limitations of current techniques in forensic ballistics.
To enable accurate distance determination in cases with incomplete evidence.

Main Methods:

Collecting test shot distributions at various distances.
Sampling targets constrained by void and pellet hit areas.
Extracting statistical descriptors from pattern samples.
Utilizing a neural network classifier for range estimation.

Main Results:

The developed method accurately estimates shooting range with partial pellet patterns.
The approach is effective even with incomplete pattern data.
Void areas adjacent to pellet impacts aid in accurate estimation.

Conclusions:

This novel method significantly advances shooting range estimation in forensic investigations.
It provides a viable solution for cases involving partial pellet patterns.
The technique enhances the accuracy of ballistic analysis in challenging scenarios.