Moving image decoding device and moving image decoding method

Moving image decoding device and moving image decoding method

  • CN 105,451,018 A
  • Filed: 09/24/2010
  • Published: 03/30/2016
  • Est. Priority Date: 01/07/2010
  • Status: Active Application
First Claim
Patent Images

1. a moving image decoding apparatus, possesses:

  • Lsb decoder, according to coded data, obtains pattern information and conversion coefficient;

    Coefficient order control part, according to the scanning sequency corresponding with the intra prediction mode represented by described pattern information among predetermined multiple scanning sequency, resequences to described conversion coefficient;

    Inverse orthogonal transformation portion, carries out inverse orthogonal transformation to the described conversion coefficient after rearrangement, obtains predictive error signal;

    One direction intra-prediction image generating unit, uses unidirectional intra prediction mode to generate prediction image signal;

    AndAdder, carries out add operation to described predictive error signal and described prediction image signal, generates decoded image signal,Described inverse orthogonal transformation portion has the 1st inverse transformation substrate and 1 the 2nd inverse transformation substrate different from described 1st inverse transformation substrate, described 1st inverse transformation substrate or described 2nd inverse transformation substrate is used to carry out inverse orthogonal transformation to the described conversion coefficient after rearrangementFor there is prediction direction and neither level neither be vertical the 1st and the 2nd one direction intra prediction mode jointly use described 1st inverse transformation substrate,Predetermined described multiple scanning sequency comprises the 1st scanning sequency determined for described 1st one direction intra prediction mode and the 2nd scanning sequency determined for described 2nd one direction intra prediction mode,Described inverse orthogonal transformation portion uses different orthogonal transformation methods in luminance signal and color difference signal.

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