Digital image capture and processing system employing a multi-mode illumination subsystem adaptable to ambient illumination levels
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United States of America Patent
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Jun 9, 2009
Grant Date -
Aug 23, 2007
app pub date -
Jan 31, 2007
filing date -
Nov 13, 2003
priority date (Note) -
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Abstract
A digital image capture and processing system providing a high degree of adaptability to ambient illumination levels and having great dynamic range. The system includes a multi-mode illumination subsystem, having an active illumination mode and a passive illumination mode. During object illumination and image capturing operations, the exposure quality of a captured digital image is analyzed, and based on the results of such exposure quality analysis, system control parameters are automatically reconfigured. In the event that the exposure quality analysis indicates excessive exposure levels in a captured digital image, then a new set of SCPs is reconfigured, controlling the multi-mode illumination subsystem to operate in its passive illumination mode, whereby, ambient illumination flooding the field of view forms digital images in the image detection array during s object illumination and imaging operations.
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