DK2903274T3 - Bestemmelse af intraforudsigelsestilstand af billedkodningsenhed og billedafkodningsenhed - Google Patents

Bestemmelse af intraforudsigelsestilstand af billedkodningsenhed og billedafkodningsenhed Download PDF

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DK2903274T3
DK2903274T3 DK15160769.4T DK15160769T DK2903274T3 DK 2903274 T3 DK2903274 T3 DK 2903274T3 DK 15160769 T DK15160769 T DK 15160769T DK 2903274 T3 DK2903274 T3 DK 2903274T3
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coding unit
intra
mode
unit
intra prediction
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Jung-Hye Min
Elena Alshina
Woo-Jin Han
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Samsung Electronics Co Ltd
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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
    • H04N19/10—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
    • H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
    • 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
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
    • H—ELECTRICITY
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    • 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
    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/107—Selection of coding mode or of prediction mode between spatial and temporal predictive coding, e.g. picture refresh
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    • H04N19/103—Selection of coding mode or of prediction mode
    • H04N19/11—Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
    • H—ELECTRICITY
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    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
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    • 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
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    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
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    • H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
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    • 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
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    • 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
    • H04N19/186—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 colour or a chrominance component
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H—ELECTRICITY
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    • 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
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    • H04N19/593—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
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    • 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
    • H04N19/96—Tree coding, e.g. quad-tree coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • 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
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    • 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
    • H04N19/169—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

Claims (1)

1. Fremgangsmåde til at afkode et billede, hvor fremgangsmåden omfatter: at tilvejebringe første information, der indikerer en intraforudsigelsestilstand af en luminansblok, fra en bitstrøm; at tilvejebringe anden information, der indikerer en intraforudsigelsestilstand af en krominansblok, som svarer til luminansblokken, fra bitstrømmen; når den anden information indikerer, at intraforudsigelsestilstanden af krominans-blokken er lig med intraforudsigelsestilstanden af luminansblokken, at bestemme intraforudsigelsestilstanden af krominansblokken til at være lig med intraforudsigelsestilstanden af luminansblokken; at udføre intraforudsigelse på luminansblokken baseret på intraforudsigelsestilstanden af luminansblokken; og at udføre intraforudsigelse på krominansblokken baseret på intraforudsigelsestilstanden af krominansblokken, hvor intraforudsigelsestilstanden af luminansblokken indbefatter en særlig retning blandt flere retninger, og hvor den særlige retning indikeres af én af et dx-nummer i en horisontal retning og en fast værdi i en vertikal retning og et dy-nummer i den vertikale retning og en fast værdi i den horisontale retning, hvor dx-nummeret og dy-nummeret er heltal ifølge intraforudsigelsestilstanden af luminansblokken, hvor trinnet at udføre intraforudsigelse på luminansblokken omfatter: at bestemme et antal af nærtliggende pixels, der skal tilvejebringes, ifølge en placering af en aktuel pixel og den særlige retning indikeret af intraforudsigelsestilstanden af luminansblokken, hvor de nærtliggende pixels er placeret på en venstre side af luminansblokken eller en øvre side af luminansblokken; når antallet af nærtliggende pixels er 1, at intraforudsigelsesudføringsenheden tilvejebringer en forudsigelsesværdi af den aktuelle pixel baseret på den nærtliggende pixel ved at bestemme en forudsigelsesværdi af den aktuelle pixel til at være pixelværdien af den nærtliggende pixel; og når antallet af nærtliggende pixels er 2, at tilvejebringer forudsigelsesværdien af den aktuelle pixel baseret på et vægtet gennemsnit af de nærtliggende pixels, hvor det vægtede gennemsnit tilvejebringes ved at multiplicere vægte til hver af to nærtliggende pixels og tage gennemsnittet af den multiplicerede værdi, hvor vægtene bestemmes baseret på den særlige retning og placeringen af de to nærtliggende pixels, hvor intraforudsigelsestilstanden af krominansblokken bestemmes til at være lig med intraforudsigelsestilstanden af luminansblokken, når den anden information indikerer at intraforudsigelsestilstanden af krominansblokken er lig med intraforudsigelsestilstanden af luminansblokken, hvor billedet opsplittes til flere maksimalkodningsenheder ifølge information omkring maksimalstørrelse afen kodningsenhed, hvor en maksimalkodningsenhed opsplittes til flere kodningsenheder ved at anvende opsplitningsinformation og en dybdeinformation, der angiver antallet af gange kodningsenheden opsplittes rumligt fra maksimalkodningsenheden, at en luminanskomponentmaksimalkodningsenhed og en krominanskomponent-maksimalkodningsenhed blandt maksimalkodningsehederne opsplittes hierarkisk til én eller flere luminanskomponentmaksimalkodningsenheder af dybder og én eller flere kromi-nanskomponentmaksimalkodningsenheder af dybder, hvilke henholdsvis indbefatter mindst én af en aktuel dybde og en lavere dybde ifølge opsplitningsinformationen, når opsplitningsinformationen indikerer en opsplitning for den aktuelle dybde, at en kodningsenhed af den aktuelle dybde opsplittes til fire kodningsenheder af den lavere dybde uafhængigt af nærtliggende kodningsenheder, når opsplitningsinformationen indikerer en ikke-opsplitning forden aktuelle dybde, at én eller flere forudsigelsesenheder tilvejebringes fra kodningsenheden af den aktuelle dybde, og hvor luminansblokken er en forudsigelsesenhed, som tilvejebringes fra kodningsenheden af den aktuelle dybde, hvor dx-nummeret og dy-nummeret er én af værdi valgt blandt {32, 26, 21, 17, 13, 9, 5, 2, 0, -2, -5, -9, -13, -17, -21, -26} ifølge intraforudsigelsestilstanden af luminansblokken, og hvor den faste værdi er af anden potens.
DK15160769.4T 2010-04-05 2011-04-05 Bestemmelse af intraforudsigelsestilstand af billedkodningsenhed og billedafkodningsenhed DK2903274T3 (da)

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KR1020100031145A KR101503269B1 (ko) 2010-04-05 2010-04-05 영상 부호화 단위에 대한 인트라 예측 모드 결정 방법 및 장치, 및 영상 복호화 단위에 대한 인트라 예측 모드 결정 방법 및 장치
EP11766126.4A EP2545713B1 (en) 2010-04-05 2011-04-05 Determining intra prediction mode of image coding unit and image decoding unit

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DK15160770.2T DK2903275T3 (da) 2010-04-05 2011-04-05 Bestemmelse af intraforudsigelsestilstand af billedkodningsenhed og billedafkodningsenhed
DK15160768.6T DK2905962T3 (da) 2010-04-05 2011-04-05 Bestemmelse af intraforudsigelsestilstand af billedkodningsenhed og billedafkodningsenhed
DK11766126.4T DK2545713T3 (da) 2010-04-05 2011-04-05 Bestemmelse af intra-forudsigelsestilstand af billedkodningsenhed og billedafkodningsenhed

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DK15160768.6T DK2905962T3 (da) 2010-04-05 2011-04-05 Bestemmelse af intraforudsigelsestilstand af billedkodningsenhed og billedafkodningsenhed
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JP (7) JP5883846B2 (da)
KR (1) KR101503269B1 (da)
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AU (1) AU2011239130C1 (da)
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RS (5) RS56438B1 (da)
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