Digitizer with improved dynamic range and photometric resolution
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United States of America Patent
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Jul 5, 2005
Grant Date -
Jun 10, 2004
app pub date -
Dec 6, 2002
filing date -
Dec 6, 2002
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Abstract
A digitizer having a dual exposure technique is combined with an associated LUT for each exposure. Each LUT may have a transfer function including a logarithmic operator resulting in a digitized image with improved photometric resolution and increased dynamic range. A digitizer utilizing multiple exposures at approximately equal exposure time intervals provides a noise reduction for lower optical density portions of the data medium further contributing to increased dynamic range. Associated methods are also provided.
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