Apparatus and method for encoding or decoding using a subband dependent prediction adaptation for GCLI entropy coding

Apparatus and method for encoding or decoding using a subband dependent prediction adaptation for GCLI entropy coding

An apparatus for encoding image data, the image data being decomposed into a plurality of different subbands, each subband having a plurality of coefficients, wherein a precinct has different sets of coefficients from different subbands, wherein two sets of coefficients of a first precinct belong to...

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Hauptverfasser: Buysschaert, Charles Daniel, Martinez Del Amor, Miguel Angel, Pellegrin, Pascal Hubert, Keinert, Joachim, Dessy, Valentin
Format: Patent
Sprache:eng
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ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
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creator Buysschaert, Charles Daniel
Martinez Del Amor, Miguel Angel
Pellegrin, Pascal Hubert
Keinert, Joachim
Dessy, Valentin
description An apparatus for encoding image data, the image data being decomposed into a plurality of different subbands, each subband having a plurality of coefficients, wherein a precinct has different sets of coefficients from different subbands, wherein two sets of coefficients of a first precinct belong to a first spatial region of an image represented by the image data, the apparatus having: a processor for determining, for each group of coefficients within a set, a greatest coded line index (GCLI); an encoder for encoding the greatest coded line indices associated with a first set of the first precinct in accordance with a first encoding mode, and for encoding the greatest coded line indices associated with a second set of the first precinct in accordance with a second encoding mode, the second encoding mode being different from the first encoding mode; and an output interface for outputting an encoded image signal having data on the encoded greatest coded line indices and data on the coefficients.
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subjects ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
PICTORIAL COMMUNICATION, e.g. TELEVISION
title Apparatus and method for encoding or decoding using a subband dependent prediction adaptation for GCLI entropy coding
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