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NCJ Number: NCJ 242577     Find in a Library
Title: Photography of Faded or Concealed Bruises on Human Skin
Journal: Journal of Forensic Identification  Volume:63  Issue:1  Dated:January/February 2013  Pages:103 to 125
Author(s): H.C. Baker ; N. Marsh ; I. Quinones
Date Published: 02/2013
Page Count: 23
Publisher: http://theiai.org 
Type: Report (Study/Research)
Language: English
Country: United States of America
Annotation: The aim of this study was to compare four photographic techniques [visible white light, cross-polarized white light, reflected infrared (IR) light, and reflected ultraviolet (UV) light] and to evaluate their use in photographing bruises of varying visibility.
Abstract: In total, 75 bruises were photographed. Of these 75 bruises, 32 were a result of paintballing and were photographed 3 times over 10 days. The remaining 43 bruises were acquired through accidental trauma to the skin and were photographed on one occasion. The results from this study show that white light and cross-polarized light displayed the highest contrast significantly (p less than 0.05), regardless of skin color, age of bruise, or visibility of bruise. A subjective study revealed that cross-polarized light was more efficient for visualizing bruises; the area of bruising and color of the bruise was more defined. Reflected UV photography was relatively ineffective at documenting bruises. Reflected IR photography successfully documented some bruises. On dark skin, reflected IR photography showed a greater potential to enhance bruises compared to light skin. However, white light and cross-polarized white light still achieved better results for contrast on all skin tones. (Published Abstract)
Main Term(s): Criminology
Index Term(s): Evidence collection ; Photography ; Forensics/Forensic Sciences ; Investigative techniques ; Photography techniques ; Blunt force trauma injuries ; Injury investigations
   
  To cite this abstract, use the following link:
https://www.ncjrs.gov/App/Publications/abstract.aspx?ID=264652

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