Forensic applications of hyperspectral imaging technique: a narrative review

Area of Science:

• Forensic Science
• Analytical Chemistry
• Spectroscopy

Background:

• Hyperspectral imaging (HSI) is a non-contact, non-destructive technique that captures spectral data from each pixel in an image.
• This technology aids in identifying objects and materials by analyzing their unique spectral signatures.
• Forensic analysis and crime scene investigations are key application areas for HSI.

Approach:

• This paper reviews the most common forensic science applications of hyperspectral imaging.
• The review focuses on the capabilities of HSI in detecting and analyzing various types of evidence.
• Literature findings on the utility of HSI in forensic contexts are analyzed.

Key Points:

• HSI enables the detection and analysis of evidence without altering the target material.
• Promising applications include the analysis of blood traces, document forgery, gunshot residue, and fingerprint identification.
• The technology offers a comprehensive spectral dataset for detailed material characterization.

Conclusions:

• Hyperspectral imaging is a valuable tool for modern forensic investigations.
• Its non-destructive nature and detailed spectral information enhance evidence analysis.
• Further research and application in forensic science are warranted to fully leverage HSI capabilities.