BRPI0504835A - ordem de varredura dos coeficientes adaptativos - Google Patents

ordem de varredura dos coeficientes adaptativos

Info

Publication number
BRPI0504835A
BRPI0504835A BRPI0504835-4A BRPI0504835A BRPI0504835A BR PI0504835 A BRPI0504835 A BR PI0504835A BR PI0504835 A BRPI0504835 A BR PI0504835A BR PI0504835 A BRPI0504835 A BR PI0504835A
Authority
BR
Brazil
Prior art keywords
scan order
digital media
scan
rearranges
adaptive coefficients
Prior art date
Application number
BRPI0504835-4A
Other languages
English (en)
Inventor
Sridhar Srinivasan
Original Assignee
Microsoft Corp
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 Microsoft Corp filed Critical Microsoft Corp
Publication of BRPI0504835A publication Critical patent/BRPI0504835A/pt
Publication of BRPI0504835A8 publication Critical patent/BRPI0504835A8/pt
Publication of BRPI0504835B1 publication Critical patent/BRPI0504835B1/pt

Links

Classifications

    • 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
    • H04N19/129—Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
    • 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
    • H04N19/18—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 a set of transform coefficients
    • 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
    • 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)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Compression Of Band Width Or Redundancy In Fax (AREA)

Abstract

"ORDEM DE VARREDURA DOS COEFICIENTES ADAPTATIVOS". Um codec de mídias digitais reorganiza uma ordem de varredura dos coeficientes da transformada, de acordo com a estatística local das mídias digitais, de forma que os coeficientes possam ser codificados de modo mais eficiente usando codificação de entropia. A seqüenciação de varredura adaptada é aplicada de forma causal na codificação e decodificação, para evitar a sinalização explícita da ordem de varredura para o decodificador no fluxo de mídias digitais comprimidas. Para eficiência computacional, a ordem de varredura adaptada reorganiza a ordem de varredura, aplicando uma operação de troca condicional em locais de coeficientes ordenados de modo adjacente através de uma única movimentação da ordem de varredura por atualização da análise estatística.
BRPI0504835A 2004-12-31 2005-11-29 ordem de varredura dos coeficientes adaptativos BRPI0504835B1 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US11/026,650 US8311119B2 (en) 2004-12-31 2004-12-31 Adaptive coefficient scan order

Publications (3)

Publication Number Publication Date
BRPI0504835A true BRPI0504835A (pt) 2006-09-12
BRPI0504835A8 BRPI0504835A8 (pt) 2016-10-04
BRPI0504835B1 BRPI0504835B1 (pt) 2018-12-26

Family

ID=36390237

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0504835A BRPI0504835B1 (pt) 2004-12-31 2005-11-29 ordem de varredura dos coeficientes adaptativos

Country Status (10)

Country Link
US (2) US8311119B2 (pt)
EP (1) EP1679903B1 (pt)
JP (2) JP4700491B2 (pt)
KR (1) KR101260073B1 (pt)
CN (1) CN1798341B (pt)
AU (1) AU2005234613B2 (pt)
BR (1) BRPI0504835B1 (pt)
CA (1) CA2527654C (pt)
MX (1) MXPA05012973A (pt)
RU (1) RU2404534C2 (pt)

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Also Published As

Publication number Publication date
CA2527654A1 (en) 2006-06-30
US8824557B2 (en) 2014-09-02
US20130070843A1 (en) 2013-03-21
MXPA05012973A (es) 2006-06-29
RU2404534C2 (ru) 2010-11-20
US20060146936A1 (en) 2006-07-06
AU2005234613A1 (en) 2006-07-20
RU2005137246A (ru) 2007-06-10
JP2006191628A (ja) 2006-07-20
BRPI0504835B1 (pt) 2018-12-26
BRPI0504835A8 (pt) 2016-10-04
US8311119B2 (en) 2012-11-13
AU2005234613B2 (en) 2010-02-25
JP4700491B2 (ja) 2011-06-15
CA2527654C (en) 2015-01-06
JP5027936B2 (ja) 2012-09-19
EP1679903B1 (en) 2014-10-01
EP1679903A3 (en) 2006-07-26
CN1798341A (zh) 2006-07-05
JP2011125038A (ja) 2011-06-23
CN1798341B (zh) 2012-07-18
KR101260073B1 (ko) 2013-05-02
KR20060079087A (ko) 2006-07-05
EP1679903A2 (en) 2006-07-12

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