The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 25, 2009
Filed:
Nov. 15, 2003
Michael W. Marcellin, Tucson, AZ (US);
Ali Bilgin, Tucson, AZ (US);
Zhenyu Wu, Tucson, AZ (US);
Arizona Board of Regents on behalf of the University of Arizona, Tucson, AZ (US);
Abstract
The present invention provides a method for decoding corrupt codestreams for encoded digital imagery and video and, in particular, JPEG2000 codestreams with improved error resilience properties. The decoding techniques apply to a class of coding algorithms in which the data from underlying images are partitioned, typically to allow decoding of different spatial sections of the image, and the rules governing the dependencies within and perhaps between partitioned sets are known. Corrupt codestreams are decoded with improved image quality by observing the partitions imposed by the underlying algorithm (), detecting an error in a partition set (), analyzing the dependencies within and perhaps between the partitions (), determining what sections of encoded data that follow the error in the partition set can be salvaged (), and decoding those sections (). Even though there might be errors in a particular partition, portions of that partition might still be completely or partially decodable, depending on certain modes or 'switches' used during the creation of the codestream.