Region-based information compaction as for digital images
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United States of America Patent
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Jul 22, 2008
Grant Date -
Oct 30, 2003
app pub date -
May 6, 2003
filing date -
Mar 30, 1998
priority date (Note) -
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status (Latency Note)
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Abstract
A method and apparatus for preserving the dynamic range of a relatively high dynamic range information stream, illustratively a high resolution video signal, subjected to a relatively low dynamic range encoding and/or transport process(es). A relatively high dynamic range information stream is subjected to a segmentation and remapping process whereby each segment is remapped to the relatively low dynamic range appropriate to the encoding and/or transport process(es) utilized. An auxiliary information stream includes segment and associated remapping information such that the initial, relatively high dynamic range information stream may be recovered in a post-encoding (i.e. decoding) or post-transport (i.e., receiving) process.
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