Investigation of influence of illumination in a latent fingerprint acquisition system based on a smartphone

Haertel, Maryah Elisa Morastoni; Melo, André L.; Linhares, Eduardo J.; G., Armando Albertazzi

doi:10.1117/12.2321325

Cited by 1 publication

(2 citation statements)

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“…Optical enhancement in smartphone‐based systems appeared in 2012, with the work of Warren and Pesses, through a study of light and camera configuration to obtain better images for latent prints. Dhanotia, Chatterjee, Bhatia, and Prakash (2018) and Haertel et al (2018) also used different mechanical arrangements to locate and acquire latent fingerprints on different surfaces. All of these studies used optical and nondestructive methods.…”

Section: Smartphone‐based Systemsmentioning

confidence: 99%

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Smartphones for latent fingerprint processing and photography: A revolution in forensic science

Haertel

Linhares

Melo³

2020

WIREs Forensic Science

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Smartphones are a great technological revolution of the last decade. Their characteristics, such as high‐resolution cameras, internal storage, and processing capacity, make them useful for different technical solutions, such as forensics. The latent fingerprint is a critical piece of evidence in crime scenes; it is invisible to the naked eye, so different methods for improving visualization are essential. Several techniques, based on chemical and physical processes, have been developed over time. Smartphones can help improve visualization through optical features. Recent studies have evaluated combining methods of acquiring latent fingerprints with smartphones, showing different principles for this purpose. Using this type of tool remains controversial, especially regarding its admissibility in court. Studies in this area are necessary since these tools would make the lives of forensic scientists much easier. Among the main reasons for its application in crime scenes are ease of use, wide availability for purchase, and the low cost involved, which is of great interest to developing countries. This work aims to show that a smartphone camera is also a suitable tool for enhancing and acquiring latent digital fingerprints with sufficient quality for forensic use. This review shows further research and discusses image quality, admissibility in court, and its importance for developing countries due to its low cost. This article is categorized under: Digital and Multimedia Science > Mobile Forensics Crime Scene Investigation > From Traces to Intelligence and Evidence Digital and Multimedia Science > Multimedia Forensics

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Section: Smartphone‐based Systemsmentioning

confidence: 99%

“…The prototype built by Haertel et al (2018) uses a light source and triangulation to enhance latent fingerprints on smooth surfaces. The authors used several different wavelengths to establish the best contrasts in the acquired images.…”

Section: Smartphone‐based Systemsmentioning

confidence: 99%