CA2805722C - Procede et appareil de filtrage de boucle adaptatif a base de region - Google Patents

Procede et appareil de filtrage de boucle adaptatif a base de region Download PDF

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Publication number
CA2805722C
CA2805722C CA2805722A CA2805722A CA2805722C CA 2805722 C CA2805722 C CA 2805722C CA 2805722 A CA2805722 A CA 2805722A CA 2805722 A CA2805722 A CA 2805722A CA 2805722 C CA2805722 C CA 2805722C
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region
regions
alf
boundary
filter
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CA2805722A1 (fr
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Ching-Yeh Chen
Chih-Ming Fu
Chia-Yang Tsai
Yu-Wen Huang
Shaw-Min Lei
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HFI Innovation Inc
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MediaTek Inc
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Priority claimed from US13/093,068 external-priority patent/US9094658B2/en
Priority claimed from US13/158,427 external-priority patent/US9055305B2/en
Priority claimed from US13/177,343 external-priority patent/US8861617B2/en
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Publication of CA2805722A1 publication Critical patent/CA2805722A1/fr
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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
    • H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
    • H04N19/82—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation involving filtering within a prediction loop
    • 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
    • H04N19/117—Filters, e.g. for pre-processing or post-processing
    • 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
    • H04N19/134—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
    • H04N19/156—Availability of hardware or computational resources, e.g. encoding based on power-saving 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
    • 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
    • H04N19/182—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 pixel
    • 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
    • H04N19/19—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 using optimisation based on Lagrange multipliers
    • 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
    • H04N19/60—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive 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
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards
    • 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
    • H04N19/80—Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation

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

Abstract

Dans un système à compensation de mouvement à base de bloc, des bruits de codage peuvent apparaître en raison d'opérations avec pertes. Le filtrage de boucle adaptatif (ALF) est une technique utilisée pour améliorer la qualité. Un procédé ALF adaptatif aux pixels (PA) a été développé qui utilise la mesure de laplacien à somme modifiée (SLM) pour classifier des pixels et applique un filtre ALF respectif à chaque pixel en fonction de la SLM. Bien que l'ALF PA atteigne de meilleures performances qu'un ALF à base de filtre unique (SF) classique, l'ALF PA est source d'une plus grande complexité et consomme plus de puissance en raison de la forte complexité et d'une commutation de filtre pixel par pixel. En conséquence, l'invention porte sur une technique ALF à base de région qui permet une sélection de filtre adaptatif région par région et ne requiert pas de commutation de filtre pixel par pixel. Dans un mode de réalisation selon la présente invention, une image est divisée en MxN régions. L'ALF à base de région permet également une fusion de régions pour les MxN régions afin d'améliorer les performances. Selon un autre aspect de la présente invention, la conception ALF optimale prend également en considération la complexité du système par utilisation d'une optimisation débit-distorsion-complexité (RDCO). La technique RDCO est également appliquée à une conception de décalage adaptatif aux échantillons (SAO).
CA2805722A 2010-10-05 2011-09-30 Procede et appareil de filtrage de boucle adaptatif a base de region Active CA2805722C (fr)

Applications Claiming Priority (15)

Application Number Priority Date Filing Date Title
US39006810P 2010-10-05 2010-10-05
US61/390,068 2010-10-05
US42172910P 2010-12-10 2010-12-10
US61/421,729 2010-12-10
US201161429313P 2011-01-03 2011-01-03
US61/429,313 2011-01-03
US201161454829P 2011-03-21 2011-03-21
US61/454,829 2011-03-21
US13/093,068 US9094658B2 (en) 2010-05-10 2011-04-25 Method and apparatus of adaptive loop filtering
US13/093,068 2011-04-25
US13/158,427 US9055305B2 (en) 2011-01-09 2011-06-12 Apparatus and method of sample adaptive offset for video coding
US13/158,427 2011-06-12
US13/177,343 US8861617B2 (en) 2010-10-05 2011-07-06 Method and apparatus of region-based adaptive loop filtering
US13/177,343 2011-07-06
PCT/CN2011/080408 WO2012045269A1 (fr) 2010-10-05 2011-09-30 Procédé et appareil de filtrage de boucle adaptatif à base de région

Publications (2)

Publication Number Publication Date
CA2805722A1 CA2805722A1 (fr) 2012-04-12
CA2805722C true CA2805722C (fr) 2016-03-29

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CA2805722A Active CA2805722C (fr) 2010-10-05 2011-09-30 Procede et appareil de filtrage de boucle adaptatif a base de region

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EP (1) EP2625859A4 (fr)
KR (1) KR101526349B1 (fr)
CN (3) CN106878729B (fr)
CA (1) CA2805722C (fr)
PH (1) PH12013500635A1 (fr)
WO (1) WO2012045269A1 (fr)

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Publication number Publication date
CN107087180A (zh) 2017-08-22
CN106878729A (zh) 2017-06-20
CN107087180B (zh) 2019-10-29
EP2625859A4 (fr) 2016-03-02
EP2625859A1 (fr) 2013-08-14
CN103155557A (zh) 2013-06-12
CN103155557B (zh) 2017-03-01
WO2012045269A1 (fr) 2012-04-12
KR20130030294A (ko) 2013-03-26
PH12013500635A1 (en) 2013-05-06
CN106878729B (zh) 2019-09-24
CA2805722A1 (fr) 2012-04-12
KR101526349B1 (ko) 2015-06-05

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