DK1753243T3 - Fælles kvantiserings- og heltalstransformationsnormalisering under benyttelse af en mantisse-eksponentrepræsentation af en kvantiseringsparameter - Google Patents

Fælles kvantiserings- og heltalstransformationsnormalisering under benyttelse af en mantisse-eksponentrepræsentation af en kvantiseringsparameter Download PDF

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DK1753243T3
DK1753243T3 DK06019033.7T DK06019033T DK1753243T3 DK 1753243 T3 DK1753243 T3 DK 1753243T3 DK 06019033 T DK06019033 T DK 06019033T DK 1753243 T3 DK1753243 T3 DK 1753243T3
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quantization
matrix
normalization
integer
transform
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DK06019033.7T
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Louis Jospeh Kerofsky
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Dolby Int Ab
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    • 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
    • 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
    • H03M7/14—Conversion to or from non-weighted codes
    • H03M7/24—Conversion to or from floating-point codes
    • 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
    • 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
    • H04N19/134—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
    • H04N19/18—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
    • H04N19/10—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
    • H04N19/42—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by implementation details or hardware specially adapted for video compression or decompression, e.g. dedicated software implementation

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Image Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Analogue/Digital Conversion (AREA)

Claims (1)

1. Fremgangsmåde til videoindkodning, der omfatter en forudsigelsesløkke, idet forudsigelsesløkken omfatter: a) at udføre heltalstransformation af en billedblok for at opnå en første matrix af heltalstransformerede koefficienter Kl[i][j] under benyttelse af en heltalstransformation, som har basisfunktioner med forskellige normer; b) at udføre en kombineret kvantisering og normalisering af den første matrix af heltalstransformerede koefficienter Kl[i][j] for at udlede en kvantiseret datamatrix L[i][j] under benyttelse af en kombineret kvantiserings- og normaliseringsmatrix A(QP) [i] [j ] ; c) at udføre en kombineret afkvantisering og normalisering af den kvantiserede datamatrix L[i] [j] for at opnå en anden matrix af heltalstransformerede koefficienter K2[i] [j], hvorved den kombinerede afkvantisering og normalisering indbefatter: cl) at indføre en kvantiseringsparameter QP (206); c2) at afgrænse en kombineret afkvantiserings- og normaliseringsmatrix B (QP) [i] [j], således at alle heltalstransformerede koefficienter K2[i][j] har den samme normalisering, hvorved den kombinerede kvantiserings- og normaliseringsmatrix A(QP)[i][j] og den kombinerede afkvantiserings- og normaliseringsmatrix B (QP) [i] [j] er forbundne med en normaliseringsrelation, som er A (QP) [i] [j] *B(QP) [i] [j] = N [ i ] [j] ; d) at udføre en invers heltalstransformation af den anden matrix af heltalstransformerede koefficienter K2[i][j], hvor de basale funktioner fra den inverse heltalstransformation har forskellige normer, for at opnå en invers heltalstransformeret koefficientmatrix; og e) at udføre en yderligere normalisering på den inverse heltalstransformerede koefficientmatrix under benyttelse af en enkelt skalar værdi 2N; kendetegnet ved, at den kombinerede kvantiserings- og normaliseringsmatrix A(QP)[i][j] er faktoriseret til mantisse- og eksponentled, og den kombinerede afkvantisering og normalisering fra punkt c) yderligere indbefatter c3) at repræsentere den kombinerede afkvantiserings- og normaliseringsmatrix B (QP) [i] [j] i mantisse- og eksponentformat, idet en mantissedelsmatrix Bm(QP)[i][j] er en funktion af kvantiseringsparameteren QP, og en eksponentdelsmatrix Be (QP) [i] [j] er en funktion af kvantiseringsparameteren QP og er uafhængig af i, j og QP i intervallet [0,P — 1], hvor Bm(QP) [i] [j] og Be (QP) [i] [j] opfylder Bm(QP) [i] [j] = Bm(QP mod P) [i] [j] og Be (QP) [i] [j] = Be(0) + QP/P, hvor P er et heltal, og QP/P repræsenterer heltallet, der bliver opnået ved at afrunde resultatet af at dividere QP med P imod nul; og c4) at beregne den anden matrix af heltalstransformerede koefficienter K2[i][j] under benyttelse af K2[i][j] = [L[i] [j]*Bm(QP) [i] [j]] << Be (QP) [i] [j], hvor "<<" udtrykker en skift til venstre operation.
DK06019033.7T 2001-08-09 2002-08-08 Fælles kvantiserings- og heltalstransformationsnormalisering under benyttelse af en mantisse-eksponentrepræsentation af en kvantiseringsparameter DK1753243T3 (da)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US31143601P 2001-08-09 2001-08-09
US31901801P 2001-11-30 2001-11-30
US10/139,036 US7123655B2 (en) 2001-08-09 2002-05-02 Method for reduced bit-depth quantization
EP02755888A EP1459449B1 (en) 2001-08-09 2002-08-08 Combined quantisation and normalisation based on a mantissa - exponent representation of a function of a quantisation parameter

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DK16186353.5T DK3121966T3 (da) 2001-08-09 2002-08-08 Fælles kvantiserings- og heltalstransformationsnormalisering under benyttelse af en mantisse-eksponentrepræsentation af en kvantiseringsparameter
DK02755888T DK1459449T3 (da) 2001-08-09 2002-08-08 Kombineret kvantisering og normalisering baseret på en mantisse-eksponent repræsentation af en kvantiseringsparameterfunktion
DK10179636.5T DK2262114T3 (da) 2001-08-09 2002-08-08 Ledkvantisering og heltalstranformationsnormalisering ved hjælp af en mantisse-eksponent-angivelse af en kvantiseringsparameter
DK10179630.8T DK2262113T3 (da) 2001-08-09 2002-08-08 Fælles kvantiserings- og heltalstransformations-normalisering ved anvendelse af en mantisse-eksponent-repræsentation af en kvantiserings-parameter
DK06019033.7T DK1753243T3 (da) 2001-08-09 2002-08-08 Fælles kvantiserings- og heltalstransformationsnormalisering under benyttelse af en mantisse-eksponentrepræsentation af en kvantiseringsparameter

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DK16186353.5T DK3121966T3 (da) 2001-08-09 2002-08-08 Fælles kvantiserings- og heltalstransformationsnormalisering under benyttelse af en mantisse-eksponentrepræsentation af en kvantiseringsparameter
DK02755888T DK1459449T3 (da) 2001-08-09 2002-08-08 Kombineret kvantisering og normalisering baseret på en mantisse-eksponent repræsentation af en kvantiseringsparameterfunktion
DK10179636.5T DK2262114T3 (da) 2001-08-09 2002-08-08 Ledkvantisering og heltalstranformationsnormalisering ved hjælp af en mantisse-eksponent-angivelse af en kvantiseringsparameter
DK10179630.8T DK2262113T3 (da) 2001-08-09 2002-08-08 Fælles kvantiserings- og heltalstransformations-normalisering ved anvendelse af en mantisse-eksponent-repræsentation af en kvantiserings-parameter

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US (15) US7123655B2 (da)
EP (6) EP3121966B1 (da)
JP (16) JP3678365B2 (da)
KR (3) KR100880305B1 (da)
CN (5) CN100442669C (da)
AT (2) ATE434288T1 (da)
CA (12) CA2776992C (da)
CY (2) CY1120067T1 (da)
DE (1) DE60232681D1 (da)
DK (5) DK3121966T3 (da)
ES (6) ES2621677T3 (da)
HK (5) HK1108785A1 (da)
PT (5) PT2262113T (da)
WO (1) WO2003017497A1 (da)

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