Photography: Marks, Impressions, and Documents

Title
Photography: Marks, Impressions, and Documents
Publication Date
2009
Author(s)
Porter, Glenn
Editor
Editor(s): Allan Jamieson and Andre Moenssens
Abstract
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
Type of document
Entry In Reference Work
Language
en
Entity Type
Publication
Publisher
John Wiley & Sons Ltd
Place of publication
Chichester, United Kingdom
Edition
1
DOI
10.1002/9780470061589.fsa363
UNE publication id
une:1959.11/27869
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.
Link
Citation
Wiley Encyclopedia of Forensic Science, v.4, p. 2036-2057
ISBN
9780470018262
9780470061589
0470061588
9781444350128
1444350129
0470018267
Start page
2036
End page
2057

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