DK2773109T3 - Fremgangsmåde og apparat til at bestemme en kontekstmodel til transformationskoefficientniveau-entropiindkodning og - afkodning - Google Patents
Fremgangsmåde og apparat til at bestemme en kontekstmodel til transformationskoefficientniveau-entropiindkodning og - afkodning Download PDFInfo
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- DK2773109T3 DK2773109T3 DK12845496.4T DK12845496T DK2773109T3 DK 2773109 T3 DK2773109 T3 DK 2773109T3 DK 12845496 T DK12845496 T DK 12845496T DK 2773109 T3 DK2773109 T3 DK 2773109T3
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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
- H04N19/102—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
- H04N19/13—Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
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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
- H04N19/90—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
- H04N19/91—Entropy coding, e.g. variable length coding [VLC] or arithmetic coding
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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
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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
- H04N19/102—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
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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
- H04N19/102—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
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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
- H04N19/169—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
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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
- H04N19/169—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
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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
- H04N19/169—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
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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
- H04N19/90—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
Claims (2)
1. Fremgangsmåde til at bestemme en kontekstmodel for entropiindkodning af et transformationskoefficientniveau, hvor fremgangsmåden omfatter: at opsplitte (2510) en transformationsenhed til undersæt, som har en forudbestemt størrelse; at tilvejebringe (2520) et kontekstsætindeks, som er anvendt i entropiindkodning af et flag for en første kritisk værdi, der indikerer hvorvidt en betydningsfuld transformationskoefficient, som er indbefattet i et aktuelt undersæt, har en værdi som er større end en første kritisk værdi; at tilvejebringe (2530) et kontekstoffset, som er anvendt i entropiindkodning af flaget for den første kritiske værdi, baseret på antallet foregående transformationskoefficienter, der har konsekutive l'ere; og at tilvejebringe (2540) et kontekstindeks, der indikerer en kontekst, som er anvendt i entropiindkodning af flaget for den første kritiske værdi, ved at anvende kontekstsætindekset og kontekstoffsettet, at tilvejebringe et kontekstsætindeks, som er anvendt i entropiindkodning af et flag for en anden kritisk værdi, der indikerer hvorvidt den betydningsfulde transformationskoefficient har en værdi som er større end en anden kritisk værdi, baseret på kontekstsætindekset, som er anvendt i entropiindkodning af flaget for den første kritiske værdi, hvor kontekstsætindekset tilvejebringes baseret på placeringsinformation af det aktuelle undersæt, som indikerer ved hvilken placering the aktuelle undersæt er placeret i transformationsenheden, når en farvekomponent af transformationsenheden er en luminanskomponent, hvor kontekstsætindekset tilvejebringes uafhængigt af placeringsinformationen af det aktuelle undersæt, når farvekomponenten af transformationsenheden er en kromi-nanskomponent.
2. Fremgangsmåde ifølge krav 1, hvor den første kritiske værdi er 1. DRAWINGS FIG. 1
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FIG. 27B
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Applications Claiming Priority (3)
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US201161553668P | 2011-10-31 | 2011-10-31 | |
US201261671955P | 2012-07-16 | 2012-07-16 | |
PCT/KR2012/009074 WO2013066051A1 (ko) | 2011-10-31 | 2012-10-31 | 변환 계수 레벨의 엔트로피 부호화 및 복호화를 위한 컨텍스트 모델 결정 방법 및 장치 |
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DK16197055.3T DK3166317T3 (da) | 2011-10-31 | 2012-10-31 | Fremgangsmåde og apparat til at bestemme en kontekstmodel til transformationskoefficientniveauentropiindkodning og afkodning. |
DK16197057.9T DK3145197T3 (da) | 2011-10-31 | 2012-10-31 | Fremgangsmåde til bestemmelse af en kontekstmodel til transformationskoefficientniveauentropiafkodning |
DK12845496.4T DK2773109T3 (da) | 2011-10-31 | 2012-10-31 | Fremgangsmåde og apparat til at bestemme en kontekstmodel til transformationskoefficientniveau-entropiindkodning og - afkodning |
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DK16197055.3T DK3166317T3 (da) | 2011-10-31 | 2012-10-31 | Fremgangsmåde og apparat til at bestemme en kontekstmodel til transformationskoefficientniveauentropiindkodning og afkodning. |
DK16197057.9T DK3145197T3 (da) | 2011-10-31 | 2012-10-31 | Fremgangsmåde til bestemmelse af en kontekstmodel til transformationskoefficientniveauentropiafkodning |
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US (5) | US9414088B2 (da) |
EP (5) | EP2773109B1 (da) |
JP (5) | JP5934376B2 (da) |
KR (6) | KR101598142B1 (da) |
CN (5) | CN107465933B (da) |
AU (1) | AU2012333301B2 (da) |
CA (2) | CA2854074C (da) |
CY (3) | CY1118368T1 (da) |
DK (3) | DK3166317T3 (da) |
ES (4) | ES2608157T3 (da) |
HR (3) | HRP20161726T1 (da) |
HU (3) | HUE054305T2 (da) |
IN (1) | IN2014MN00900A (da) |
LT (3) | LT3166317T (da) |
PL (4) | PL3399760T3 (da) |
PT (3) | PT2773109T (da) |
RS (3) | RS57491B1 (da) |
SI (3) | SI3145197T1 (da) |
TR (1) | TR201811137T4 (da) |
TW (4) | TWI692243B (da) |
WO (1) | WO2013066051A1 (da) |
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