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Title: Photography: Marks, Impressions, and Documents
Contributor(s): Porter, Glenn  (author)
Publication Date: 2009
DOI: 10.1002/9780470061589.fsa363
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Abstract: Photographic and optical enhancement of physical evidence is an important criminalistics function. It provides nondestructive methods of improving the visualization of evidence to allow further forensic examination. The key concepts and techniques involving optical, photographic, and digital imaging techniques are examined in this section. Critical foundation aspects found in quality forensic photography such as maintaining the dimensional integrity of evidence and the representation of scale are described to ensure forensic photography principles. Attributes required 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 unpacked and provide a theoretical basis. Optic 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.
Publication Type: Entry In Reference Work
Source of Publication: Wiley Encyclopedia of Forensic Science, v.4, p. 2036-2057
Publisher: John Wiley & Sons Ltd
Place of Publication: Chichester, United Kingdom
ISBN: 9780470018262
Field of Research (FOR): 190503 Lens-based Practice
160299 Criminology not elsewhere classified
180199 Law not elsewhere classified
Socio-Economic Outcome Codes: 940499 Justice and the Law not elsewhere classified
HERDC Category Description: N Entry In Reference Work
Description: This entry was revised in 2013 under the title "Photography and Optical Enhancement of Physical Evidence". See:
Porter, G. (2013). Photography and Optical Enhancement of Physical Evidence. In Wiley Encyclopedia of Forensic Science (eds A. Jamieson and A. Moenssens). doi:10.1002/9780470061589.fsa363.pub2
Appears in Collections:Entry In Reference Work
School of Humanities, Arts and Social Sciences

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