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Region-based information compaction as for digital images
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a technology of region-based information and compaction, applied in the field of region-based information compaction as for digital images, can solve the problems of dynamic range constraints degrading the quality of film, video or other information sources provided to the ultimate information consumer
Inactive Publication Date: 2012-09-11
DIGIMEDIA TECH LLC
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Thus, the quality of a film, video or other information source provided to an ultimate information consumer is degraded by dynamic range constraints of the information encoding methodologies and communication networks used to provide such information to a consumer.
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[0019]After considering the following description, those skilled in the art will clearly realize that the teachings of the invention can be readily utilized in any information processing system in which relatively high dynamic range information is subjected to relatively low dynamic range processing (e.g., encoding), and subsequently reprocessed (e.g., decoded) to reproduce, ideally, the original high dynamic range information or an approximation thereto.
[0020]While the invention will primarily be discussed within the context of multiple or moving image processed (e.g., MPEG-like video processing), it will be appreciated by those skilled in the art that the teachings of the present invention are readily applicable to single or still image processing (e.g., JPEG-like image processing). More generally, the teachings of the present invention are applicable to any form of information comprising one or more information parameters having associated with them a relatively high dynamic rang...
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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.
Description
[0001]This application is a reissue application of U.S. patent application Ser. No. 10,429,985, filed May 6, 2003, now patented as U.S. Pat. No. 7,403,565, which is a continuation of U.S. patent application Ser. No. 09 / 292,693, filed Apr. 15, 1999 now U.S. Pat. No. 6,560,285, which is a continuation in part of U.S. patent application Ser. No. 09 / 050,304, filed on Mar. 30, 1998 now U.S. Pat. No. 6,118,820 for Region-Based Information Compaction as for Digital Images, which are herein incorporated by reference in their entirety.[0002]The invention relates to information processing systems in general, and, more particularly, the invention relates to a method and apparatus for preserving a relatively high dynamic range of an information signal, such as a video information signal, processed via a relatively low dynamic range information processing system.BACKGROUND OF THE DISCLOSURE[0003]In some communications systems the data to be transmitted is compressed so that the available bandwid...
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