Variable length coding of coefficient clusters for image and...

Image analysis – Image compression or coding

Reexamination Certificate

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C382S245000, C382S246000, C341S167000, C341S065000, C341S050000, C341S051000

Reexamination Certificate

active

08041131

ABSTRACT:
A coding method, apparatus, and medium with software encoded thereon to implement a coding method. The coding method includes encoding cluster of consecutive non-zero-valued coefficients, the encoding of a cluster including jointly encoding joint events that each are defined by at least two parameters: the number of zero-valued coefficients preceding the cluster, and the number of non-zero-valued coefficients in the cluster. The encoding of the cluster also includes encoding a parameter indicative of the number of amplitude-1 trailing non-zero-valued coefficients in the cluster, in one version with the parameter indicative of the number of trailing amplitude-1 coefficients part of the joint events such that the coding is according to a 3-dimensional joint variable length coding table. The method further includes encoding the amplitudes of the non-zero-valued coefficients that are not encoded by the joint encoding, e.g., encoding the amplitudes of the other than the trailing amplitude-1 coefficients.

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patent: WO 2006001994 (2006-01-01), None
patent: WO2006001994 (2006-01-01), None
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PCT Search Report for PCT Application No. PCT/US2008/078359 mailed on Mar. 19, 2009.

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