BRPI0418954A - codificação e decodificação de sinais baseadas em contexto - Google Patents

codificação e decodificação de sinais baseadas em contexto

Info

Publication number
BRPI0418954A
BRPI0418954A BRPI0418954-0A BRPI0418954A BRPI0418954A BR PI0418954 A BRPI0418954 A BR PI0418954A BR PI0418954 A BRPI0418954 A BR PI0418954A BR PI0418954 A BRPI0418954 A BR PI0418954A
Authority
BR
Brazil
Prior art keywords
context
module
coding
operable
bit
Prior art date
Application number
BRPI0418954-0A
Other languages
English (en)
Inventor
Rongshan Yu
Xiao Lin
Susanto Rahardja
Original Assignee
Agency Science Tech & Res
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Agency Science Tech & Res filed Critical Agency Science Tech & Res
Publication of BRPI0418954A publication Critical patent/BRPI0418954A/pt

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Classifications

    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/02—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders
    • G10L19/0212—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis using spectral analysis, e.g. transform vocoders or subband vocoders using orthogonal transformation
    • G—PHYSICS
    • G10—MUSICAL INSTRUMENTS; ACOUSTICS
    • G10L—SPEECH ANALYSIS TECHNIQUES OR SPEECH SYNTHESIS; SPEECH RECOGNITION; SPEECH OR VOICE PROCESSING TECHNIQUES; SPEECH OR AUDIO CODING OR DECODING
    • G10L19/00—Speech or audio signals analysis-synthesis techniques for redundancy reduction, e.g. in vocoders; Coding or decoding of speech or audio signals, using source filter models or psychoacoustic analysis
    • G10L19/0017—Lossless audio signal coding; Perfect reconstruction of coded audio signal by transmission of coding error
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or criterion affecting or controlling the adaptive coding
    • H04N19/136—Incoming video signal characteristics or properties
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/17—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object
    • H04N19/176—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being an image region, e.g. an object the region being a block, e.g. a macroblock
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding
    • H04N19/184—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the coding unit, i.e. the structural portion or semantic portion of the video signal being the object or the subject of the adaptive coding the unit being bits, e.g. of the compressed video stream
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
    • H04N19/34—Scalability techniques involving progressive bit-plane based encoding of the enhancement layer, e.g. fine granular scalability [FGS]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/63—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets
    • H04N19/64—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets characterised by ordering of coefficients or of bits for transmission
    • H04N19/647—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding using sub-band based transform, e.g. wavelets characterised by ordering of coefficients or of bits for transmission using significance based coding, e.g. Embedded Zerotrees of Wavelets [EZW] or Set Partitioning in Hierarchical Trees [SPIHT]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the element, parameter or selection affected or controlled by the adaptive coding
    • H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Computational Linguistics (AREA)
  • Health & Medical Sciences (AREA)
  • Audiology, Speech & Language Pathology (AREA)
  • Human Computer Interaction (AREA)
  • Acoustics & Sound (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

CODIFICAçãO E DECODIFICAçãO DE SINAIS BASEADAS EM CONTEXTO. A invenção refere-se a um sistema para a codificação baseada em contexto de um sinal de entrada que inclui um módulo de transformada de domínio e um módulo de codificação baseado em contexto. O módulo de transformada de domínio é operável para converter o sinal de entrada em uma seqüência de coeficientes de transformada c¢i!. O módulo de codificação baseado em contexto inclui um módulo de varredura de plano de bits, um módulo de modelagem de contexto e um módulo de codificação e estatística. O módulo de varredura de plano de bits é operável para produzir um símbolo de plano de bits bps¢bp! para cada coeficiente de transformada c¢i! e cada plano de bits¢bp!. O módulo de modelagem de contexto é operável para atribuir um ou mais valores de contexto a cada um dos símbolos de plano de bits bps¢i, bp! recebidos. O módulo de codificação estatística é operável para codificar cada um dos símbolos de plano de bits bps¢i, bp! como uma função de um ou mais dos valores de contexto correspondentes para produzir um fluxo de símbolos codificados baseados em contexto.
BRPI0418954-0A 2004-07-14 2004-07-14 codificação e decodificação de sinais baseadas em contexto BRPI0418954A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/SG2004/000211 WO2006006936A1 (en) 2004-07-14 2004-07-14 Context-based encoding and decoding of signals

Publications (1)

Publication Number Publication Date
BRPI0418954A true BRPI0418954A (pt) 2007-12-04

Family

ID=35784185

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0418954-0A BRPI0418954A (pt) 2004-07-14 2004-07-14 codificação e decodificação de sinais baseadas em contexto

Country Status (11)

Country Link
US (1) US7656319B2 (pt)
EP (2) EP1774791A4 (pt)
JP (1) JP4842265B2 (pt)
KR (1) KR101050261B1 (pt)
CN (1) CN100584023C (pt)
AU (1) AU2004321469B2 (pt)
BR (1) BRPI0418954A (pt)
MX (1) MX2007000459A (pt)
MY (1) MY143951A (pt)
TW (1) TWI361574B (pt)
WO (1) WO2006006936A1 (pt)

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Also Published As

Publication number Publication date
US20080094259A1 (en) 2008-04-24
CN101015216A (zh) 2007-08-08
WO2006006936A1 (en) 2006-01-19
EP2006839A3 (en) 2009-02-11
JP2008506987A (ja) 2008-03-06
US7656319B2 (en) 2010-02-02
EP1774791A4 (en) 2007-11-28
JP4842265B2 (ja) 2011-12-21
MY143951A (en) 2011-07-29
CN100584023C (zh) 2010-01-20
AU2004321469B2 (en) 2009-08-20
KR20070040392A (ko) 2007-04-16
MX2007000459A (es) 2007-07-25
EP2006839A2 (en) 2008-12-24
TW200620847A (en) 2006-06-16
TWI361574B (en) 2012-04-01
EP1774791A1 (en) 2007-04-18
KR101050261B1 (ko) 2011-07-19
AU2004321469A1 (en) 2006-01-19

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Free format text: REFERENTE AO DESPACHO 8.6 PUBLICADO NA RPI 2261 DE 06/05/2014.

B15K Others concerning applications: alteration of classification

Ipc: G10L 19/02 (2013.01), G10L 19/00 (2013.01), H04N 1