MX2013012041A - Metodo y aparato para la cuantificacion del nivel de recorte. - Google Patents

Metodo y aparato para la cuantificacion del nivel de recorte.

Info

Publication number
MX2013012041A
MX2013012041A MX2013012041A MX2013012041A MX2013012041A MX 2013012041 A MX2013012041 A MX 2013012041A MX 2013012041 A MX2013012041 A MX 2013012041A MX 2013012041 A MX2013012041 A MX 2013012041A MX 2013012041 A MX2013012041 A MX 2013012041A
Authority
MX
Mexico
Prior art keywords
clipping
quantization level
quantization
transform coefficient
condition
Prior art date
Application number
MX2013012041A
Other languages
English (en)
Inventor
Xun Guo
Shaw-Min Lei
Original Assignee
Mediatek Singapore Pte Ltd
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 Mediatek Singapore Pte Ltd filed Critical Mediatek Singapore Pte Ltd
Publication of MX2013012041A publication Critical patent/MX2013012041A/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
    • H04N19/10—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
    • H04N19/124—Quantisation
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M7/00—Conversion of a code where information is represented by a given sequence or number of digits to a code where the same, similar or subset of information is represented by a different sequence or number of digits
    • H03M7/30—Compression; Expansion; Suppression of unnecessary data, e.g. redundancy reduction
    • H03M7/3059—Digital compression and data reduction techniques where the original information is represented by a subset or similar information, e.g. lossy compression
    • 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
    • H04N19/124—Quantisation
    • H04N19/126—Details of normalisation or weighting functions, e.g. normalisation matrices or variable uniform quantisers
    • 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
    • H04N19/132—Sampling, masking or truncation of coding units, e.g. adaptive resampling, frame skipping, frame interpolation or high-frequency transform coefficient masking
    • 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
    • H04N19/134—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
    • 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
    • H04N19/44—Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)

Abstract

Se describen un método y aparato para recortar un coeficiente de transformada; las modalidades de acuerdo con la presente invención evitan el sobreflujo del coeficiente de transformada cuantificado al recortar el nivel de cuantificación de manera adaptativa después de la cuantificación; en una modalidad, el método comprende generar el nivel de cuantificación para el coeficiente de transformada de una unidad de transformada al cuantificar el coeficiente de transformada de acuerdo con una matriz de cuantificación y parámetro de cuantificación; la condición de recorte se determina y el nivel de cuantificación se recorta de acuerdo con la condición de recorte para generar un nivel de cuantificación procesado por recorte; la condición de recorte incluye una condición de recorte nula; el nivel de cuantificación se recorta a una escala fija representada en n bits para la condición de recorte nula, donde en corresponde a 8, 16 ó 32; el nivel de cuantificación también puede recortarse dentro de una escala de -m a m-1 para la condición de recorte nula, donde m puede corresponder a 128, 32768 ó 2147483648.
MX2013012041A 2011-12-15 2012-12-14 Metodo y aparato para la cuantificacion del nivel de recorte. MX2013012041A (es)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
PCT/CN2011/084083 WO2013086724A1 (en) 2011-12-15 2011-12-15 Method of clippling transformed coefficients before de-quantization
PCT/CN2012/086648 WO2013087021A1 (en) 2011-12-15 2012-12-14 Method and apparatus for quantization level clipping

Publications (1)

Publication Number Publication Date
MX2013012041A true MX2013012041A (es) 2013-12-16

Family

ID=48611829

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2013012041A MX2013012041A (es) 2011-12-15 2012-12-14 Metodo y aparato para la cuantificacion del nivel de recorte.

Country Status (8)

Country Link
US (4) US9420296B2 (es)
EP (2) EP2737706A4 (es)
JP (1) JP5753630B2 (es)
AU (1) AU2012350503B2 (es)
CA (1) CA2831019C (es)
MX (1) MX2013012041A (es)
RU (1) RU2600935C1 (es)
WO (3) WO2013086724A1 (es)

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Also Published As

Publication number Publication date
CA2831019C (en) 2017-12-05
US9565441B2 (en) 2017-02-07
EP2737706A4 (en) 2015-05-27
US9420296B2 (en) 2016-08-16
US20130322527A1 (en) 2013-12-05
EP2737696A1 (en) 2014-06-04
US20140328395A1 (en) 2014-11-06
CA2831019A1 (en) 2013-06-20
JP5753630B2 (ja) 2015-07-22
AU2012350503B2 (en) 2015-11-05
JP2014526199A (ja) 2014-10-02
US9749635B2 (en) 2017-08-29
RU2600935C1 (ru) 2016-10-27
US20170094275A1 (en) 2017-03-30
EP2737696A4 (en) 2015-05-20
EP2737696B1 (en) 2019-07-17
EP2737706A1 (en) 2014-06-04
WO2013086724A1 (en) 2013-06-20
US20160205401A1 (en) 2016-07-14
WO2013087025A1 (en) 2013-06-20
AU2012350503A1 (en) 2014-02-06
EP2737696B8 (en) 2019-10-02
WO2013087021A1 (en) 2013-06-20

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