KR20040106351A - 이미지 및/또는 비디오 인코더 및 디코더에서의변환계수를 인코딩하는 방법 및 장치, 및 이에 대응하는컴퓨터 프로그램 및 컴퓨터로 읽을 수 있는 저장매체 - Google Patents
이미지 및/또는 비디오 인코더 및 디코더에서의변환계수를 인코딩하는 방법 및 장치, 및 이에 대응하는컴퓨터 프로그램 및 컴퓨터로 읽을 수 있는 저장매체 Download PDFInfo
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- H—ELECTRICITY
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- 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
- H03M7/40—Conversion to or from variable length codes, e.g. Shannon-Fano code, Huffman code, Morse code
- H03M7/4006—Conversion to or from arithmetic code
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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
- H04N19/129—Scanning of coding units, e.g. zig-zag scan of transform coefficients or flexible macroblock ordering [FMO]
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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
- H04N19/10—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
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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
- H04N19/60—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
- H04N19/90—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
- H04N19/90—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
- H04N19/93—Run-length coding
Abstract
Description
Claims (13)
- 유효 변환계수를 포함하는 (비디오) 픽처의 블록에 대해, 변환계수의 부호화가, 각 블록마다,주사과정에서, 상기 블록내 유효 변환계수의 위치가 결정되어 부호화되고, 이어서상기 블록내 최종 유효 변환계수에서 시작하여 역 주사순서로 상기 유효 변환계수의 값 (레벨)이 결정되어 부호화되는 방식으로 수행되는 것을 특징으로 하는 픽처 및/또는 비디오 코더 및 디코더에서의 변환계수 부호화 방법.
- 제 1 항에 있어서,상기 블록의 최종 변환계수가 아닌 상기 블록의 각 유효 변환계수는 1-비트 심볼인 것을 특징으로 하는 방법.
- 제 1 항 또는 제 2 항에 있어서,각 유효 변환계수에 대해, 부호는 1-비트 심볼 (SIGN)로 표시되고 크기는 이진 부호화 심볼 (ABS)로 표시되는 것을 특징으로 하는 방법.
- 제 1 항 내지 제 3 항 중 어느 한 항에 있어서,상기 크기는 단항 이진화 상태의 심볼 (ABS) 또는 프레픽스부 및 서픽스부를갖는 심볼 (ABS)로 표시되고, 상기 프레픽스부는 다수의 1로 구성되고 상기 서픽스부는 0차 EGC (exp-golomb code)로 부호화되는 것을 특징으로 하는 방법.
- 제 1 항 내지 제 4 항 중 어느 한 항에 있어서,유효 변환계수를 포함하는 블록은 예컨대 CBP 또는 매크로 블록 모드와 같은 다른 신택스 성분과 관련된 1-비트 심볼 CBP4인 것을 특징으로 하는 방법.
- 제 1 항 내지 제 5 항 중 어느 한 항에 있어서,한 블록의 각 계수에 대한 1-비트 심볼 (SIG) 및 한 블록의 각 유효 계수에 대한 1-비트 심볼 (LAST)을 전송함으로써 유효매핑이 부호화되고, 상기 전송은 주사순서로 수행되고, (SIG)는 유효 계수를 식별하도록 기능하고 (LAST)는 상기 블록에서 유효 변환계수가 더 있는지 여부를 나타내는 것을 특징으로 하는 방법.
- 제 6 항에 있어서,상기 1-비트 심볼 CBP4, 상기 유효매핑의 부호화, 및/또는 상기 계수 크기의 부호화를 위한 모델링은 콘텍스트 종속 방식으로 수행되는 것을 특징으로 하는 방법.
- 제 6 항 또는 제 7 항에 있어서,한 블록의 최종 주사위치에 대해서는 유효정보 (SIG, LAST)가 전송되지 않는다는 것을 특징으로 하는 방법.
- 제 1 항 내지 제 8 항 중 어느 한 항에 있어서,비교통계 (comparable statistics)를 갖는 변환계수의 블록유형은 블록 카테고리로 요약되는 것을 특징으로 하는 방법.
- 픽처 및/또는 비디오 코더 및 디코더에서 변환계수를 부호화하는 방법이 수행될 수 있도록 형성된 적어도 하나의 프로세서 및/또는 칩을 포함하는 장치로서,유효 변환계수를 포함하는 (비디오) 픽처의 블록에 대해, 변환계수의 부호화가, 각 블록마다,주사과정에서, 상기 블록내 유효 변환계수의 위치가 결정되어 부호화되고, 이어서상기 블록내 최종 유효 변환계수에서 시작하여 역 주사순서로 상기 유효 변환계수의 값 (레벨)이 결정되어 부호화되는 방식으로 수행되는 것을 특징으로 하는 픽처 및/또는 비디오 코더 및 디코더에서의 변환계수 부호화 장치.
- 컴퓨터의 메모리로 로딩된 후에 상기 컴퓨터가 픽처 및/또는 비디오 코더 및 디코더에서의 변환계수를 부호화하는 방법을 수행할 수 있게 하는 컴퓨터 프로그램으로서,유효 변환계수를 포함하는 (비디오) 픽처의 블록에 대해, 변환계수의 부호화가, 각 블록마다,주사과정에서, 상기 블록내 유효 변환계수의 위치가 결정되어 부호화되고, 이어서상기 블록내 최종 유효 변환계수에서 시작하여 역 주사순서로 상기 유효 변환계수의 값 (레벨)이 결정되어 부호화되는 방식으로 수행되는 것을 특징으로 하는 컴퓨터 프로그램.
- 컴퓨터의 메모리로 로딩된 후에 상기 컴퓨터가 픽처 및/또는 비디오 코더 및 디코더에서 변환계수를 부호화하는 방법을 수행할 수 있게 하는 프로그램이 저장되는 컴퓨터로 읽을 수 있는 저장매체로서,유효 변환계수를 포함하는 (비디오) 픽처의 블록에 대해, 변환계수의 부호화가, 각 블록마다,주사과정에서, 상기 블록내 유효 변환계수의 위치가 결정되어 부호화되고, 이어서상기 블록내 최종 유효 변환계수에서 시작하여 역 주사순서로 상기 유효 변환계수의 값 (레벨)이 결정되어 부호화되는 방식으로 수행되는 것을 특징으로 하는 컴퓨터로 읽을 수 있는 저장매체.
- 제 11 항에 따른 컴퓨터 프로그램은, 예컨대 인터넷과 같은 전자 데이터 네트워크로부터 상기 데이터 네트워크에 접속된 데이터 처리수단으로 다운로드되는것을 특징으로 하는 방법.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
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DE10220961.8 | 2002-05-02 | ||
DE10220961 | 2002-05-02 | ||
PCT/EP2003/004656 WO2003094529A2 (de) | 2002-05-02 | 2003-05-02 | Verfahren von transformations-koeffizienten in bild-oder videokodierern |
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KR20040106351A true KR20040106351A (ko) | 2004-12-17 |
KR100729270B1 KR100729270B1 (ko) | 2007-06-15 |
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KR1020047016611A KR100729270B1 (ko) | 2002-05-02 | 2003-05-02 | 이미지 및/또는 비디오 인코더 및 디코더에서의변환계수를 인코딩하는 방법 및 장치, 및 이에 대응하는컴퓨터 프로그램 및 컴퓨터로 읽을 수 있는 저장매체 |
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US (10) | US7702013B2 (ko) |
EP (3) | EP1487113B1 (ko) |
JP (4) | JP4313757B2 (ko) |
KR (1) | KR100729270B1 (ko) |
AT (2) | ATE343302T1 (ko) |
DE (2) | DE50305419D1 (ko) |
DK (2) | DK1487113T3 (ko) |
ES (2) | ES2270246T3 (ko) |
HK (2) | HK1070480A1 (ko) |
PT (2) | PT1467491E (ko) |
WO (1) | WO2003094529A2 (ko) |
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