Laser forensic detection method and apparatus
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United States of America Patent
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Issued Date -
Sep 18, 2008
app pub date -
Apr 19, 2007
filing date -
Mar 13, 2007
priority date (Note) -
Abandoned
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Abstract
A method for detecting traces of material on a surface for forensic evidence gathering is disclosed. The surface is periodically illuminated with laser radiation. Pairs of images of the surface are recorded with one image in each pair recorded while the surface is illuminated and the other being recorded while the surface is not being illuminated. The images in each pair are subtracted and a video signal is generated from the subtracted images. The video signal can be displayed on a display device or recorded for later display and examination.
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