Porter, Glenn (2013) Photography and optical enhancement of physical evidence. In: Jamieson, Allan, and Moenssens, Andre A., (eds.) Wiley Encyclopedia of Forensic Science. Wiley-Blackwell, Chichester, UK, pp. 1-20.

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Abstract

Photographic and optical enhancement of physical evidence is an important function in criminalistics and provides nondestructive methods of improving the visualization of forensic evidence. The key concepts and techniques involving optical, photographic, and digital imaging techniques are examined in this section. Essential foundation principle required in quality forensic photography such as maintaining the dimensional integrity of evidence and the representation of scale are discussed. Attributes for optical enhancement including the relationship between the spectral distribution of the light source, the spectral properties of the specimen, and spectral sensitivity of the recording media are explained and provide a theoretical basis. Optical enhancement techniques such as absorption, reflection, transmission, and photoluminescence modes are discussed with samples illustrating those optical effects. Digital imaging enhancement techniques to increase the contrast and the modification of color using Adobe Photoshop™ are explained.

Item ID:	34033
Item Type:	Book Chapter (Research - B1)
ISBN:	978-0-470-06158-9
Keywords:	optical enhancement, forensic photography
Related URLs:	Publisher
Date Deposited:	02 Jun 2015 02:45
FoR Codes:	19 STUDIES IN CREATIVE ARTS AND WRITING > 1902 Film, Television and Digital Media > 190299 Film, Television and Digital Media not elsewhere classified @ 100%
SEO Codes:	95 CULTURAL UNDERSTANDING > 9502 Communication > 950205 Visual Communication @ 100%
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