Reconstruction of crimes by infrared photography
Vera Sterzik & M Bohnert
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abstract
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Whenever blunt or sharp forces are used in a crime, analysis of
bloodstain pattern distribution may provide important information
for the reconstruction of happenings. Thereby, attention should be
paid to both the crime scene and the clothes of everyone involved in
the crime. On dark textiles, though, it is difficult or even
impossible for the human eye to detect bloodstains because of the
low contrast to the background. However, in the near infrared
wavelength range, contrast is considerably higher. Many textiles
reflect light beyond a wavelength of 830 nm and thus appear
light-colored, whereas blood absorbs the light and appears dark. In
our studies, a D7000 NIKON reflex camera modified for infrared
photography produced high-resolution photographs visualizing even
very small spatter stains on dark textiles. The equipment can be
used at any crime scene or lab and provides immediately available
and interpretable images. Thus, important findings can be obtained
at an early stage of police investigations, as two examples
(homicide and attempted homicide) illustrate.
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citation
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Sterzik V, Bohnert M. Reconstruction of crimes by infrared
photography. Int J Legal Med 2016;.
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type
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journal paper/review (English)
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date of publishing
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1-3-2016
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journal title
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Int J Legal Med
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ISSN electronic
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1437-1596
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PubMed
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26932868
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DOI
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10.1007/s00414-016-1343-2
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