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MX2012004642A - Metodo para decodificar una corriente de bits creada usando una transformacion direccional. - Google Patents

Metodo para decodificar una corriente de bits creada usando una transformacion direccional.

Info

Publication number
MX2012004642A
MX2012004642A MX2012004642A MX2012004642A MX2012004642A MX 2012004642 A MX2012004642 A MX 2012004642A MX 2012004642 A MX2012004642 A MX 2012004642A MX 2012004642 A MX2012004642 A MX 2012004642A MX 2012004642 A MX2012004642 A MX 2012004642A
Authority
MX
Mexico
Prior art keywords
bitstream
transform
transform coefficients
decoding
determined
Prior art date
Application number
MX2012004642A
Other languages
English (en)
Inventor
Robert A Cohen
Anthony Vetro
Huifang Sun
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of MX2012004642A publication Critical patent/MX2012004642A/es

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
    • H04N19/60—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
    • H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
    • 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
    • H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
    • H04N19/122—Selection of transform size, e.g. 8x8 or 2x4x8 DCT; Selection of sub-band transforms of varying structure or type
    • 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
    • H04N19/146—Data rate or code amount at the encoder output
    • H04N19/147—Data rate or code amount at the encoder output according to rate distortion criteria
    • 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
    • H04N19/189—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding
    • H04N19/196—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding characterised by the adaptation method, adaptation tool or adaptation type used for the adaptive coding being specially adapted for the computation of encoding parameters, e.g. by averaging previously computed encoding parameters
    • 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
    • H04N19/46—Embedding additional information in the video signal during the compression process
    • H04N19/463—Embedding additional information in the video signal during the compression process by compressing encoding parameters before transmission
    • 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
    • H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
    • 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
    • H04N19/90—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Computing Systems (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

Una corriente de bits incluye una secuencia de fotogramas. Cada fotograma se divide en bloques codificados. Para cada bloque, se determina un conjunto de rutas a un ángulo de transformación determinado a partir de un índice de transformación en la corriente de bits. Los coeficientes de transformación se obtienen a partir de la corriente de bits. Los coeficientes de transformación incluyen un coeficiente DC para cada ruta. Se aplica una transformación inversa a los coeficientes de transformación para producir un video decodificado.
MX2012004642A 2009-10-21 2010-09-16 Metodo para decodificar una corriente de bits creada usando una transformacion direccional. MX2012004642A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US12/603,100 US20110090952A1 (en) 2009-10-21 2009-10-21 Directional Transforms for Video and Image Coding
PCT/JP2010/066621 WO2011048909A2 (en) 2009-10-21 2010-09-16 Method for decoding a bitstream

Publications (1)

Publication Number Publication Date
MX2012004642A true MX2012004642A (es) 2012-05-29

Family

ID=43879261

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2012004642A MX2012004642A (es) 2009-10-21 2010-09-16 Metodo para decodificar una corriente de bits creada usando una transformacion direccional.

Country Status (12)

Country Link
US (1) US20110090952A1 (es)
EP (1) EP2491716B1 (es)
JP (1) JP5409909B2 (es)
KR (1) KR101351714B1 (es)
CN (1) CN102763410B (es)
BR (1) BR112012009533B1 (es)
DE (1) DE112010004109B4 (es)
ES (1) ES2793499T3 (es)
MX (1) MX2012004642A (es)
PL (1) PL2491716T3 (es)
RU (1) RU2486691C1 (es)
WO (1) WO2011048909A2 (es)

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Also Published As

Publication number Publication date
PL2491716T3 (pl) 2020-08-24
EP2491716B1 (en) 2020-04-29
BR112012009533A2 (pt) 2020-07-07
KR101351714B1 (ko) 2014-01-16
WO2011048909A3 (en) 2012-05-18
JP5409909B2 (ja) 2014-02-05
EP2491716A2 (en) 2012-08-29
RU2486691C1 (ru) 2013-06-27
JP2013507794A (ja) 2013-03-04
WO2011048909A2 (en) 2011-04-28
DE112010004109B4 (de) 2022-11-10
US20110090952A1 (en) 2011-04-21
CN102763410A (zh) 2012-10-31
BR112012009533B1 (pt) 2021-09-28
CN102763410B (zh) 2016-04-27
DE112010004109T5 (de) 2012-11-15
KR20120079137A (ko) 2012-07-11
ES2793499T3 (es) 2020-11-16

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