WO2012099433A3 - 인덱스 매핑 테이블을 이용한 엔트로피 코딩 방법 및 이러한 방법을 사용하는 영상 부호화/복호화 장치 및 방법 - Google Patents
인덱스 매핑 테이블을 이용한 엔트로피 코딩 방법 및 이러한 방법을 사용하는 영상 부호화/복호화 장치 및 방법 Download PDFInfo
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- WO2012099433A3 WO2012099433A3 PCT/KR2012/000540 KR2012000540W WO2012099433A3 WO 2012099433 A3 WO2012099433 A3 WO 2012099433A3 KR 2012000540 W KR2012000540 W KR 2012000540W WO 2012099433 A3 WO2012099433 A3 WO 2012099433A3
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- WO
- WIPO (PCT)
- Prior art keywords
- mapping table
- entropy coding
- coding method
- encoding
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- Prior art date
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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
- H04N19/1887—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 variable length codeword
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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
- H04N19/61—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive 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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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
- Compression, Expansion, Code Conversion, And Decoders (AREA)
Abstract
인덱스 매핑 테이블을 이용한 엔트로피 코딩 방법 및 이러한 방법을 사용하는 장치가 개시되어 있다. 영상 복호화 방법은 역 코드워드 매핑 테이블을 참조하여 입력된 코드워드를 코드 넘버로 매핑하고, 매핑된 코드 넘버를 테이블 인덱스로 산출하는 단계와 코드 넘버의 누적 발생 횟수, 코드 넘버의 연속 발생 횟수, 주변 블록의 부복호화 정보 및 역 인덱스 매핑 테이블을 갱신하기 위한 임계치 정보 중 적어도 하나의 정보를 기초로 역 인덱스 매핑 테이블을 갱신하는 단계를 포함할 수 있다. 따라서, 임의의 조건에 따라 인덱스 매핑 테이블을 재정렬함으로서 부복호화 효율을 높힐 수 있다.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/980,521 US9053525B2 (en) | 2011-01-20 | 2012-01-20 | Entropy coding method using an index mapping table, and image-encoding/decoding apparatus and method using said entropy coding method |
Applications Claiming Priority (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR10-2011-0005707 | 2011-01-20 | ||
KR20110005707 | 2011-01-20 | ||
KR1020110049246A KR20120084639A (ko) | 2011-01-20 | 2011-05-24 | 엔트로피 부호화를 위한 적응적 정렬 테이블 |
KR10-2011-0049246 | 2011-05-24 | ||
KR10-2011-0092189 | 2011-09-09 | ||
KR20110092189A KR20120084648A (ko) | 2011-01-20 | 2011-09-09 | 엔트로피 부호화를 위한 적응적 정렬 테이블 |
KR10-2012-0006574 | 2012-01-20 | ||
KR20120006574A KR20120084688A (ko) | 2011-01-20 | 2012-01-20 | 인덱스 매핑 테이블을 이용한 엔트로피 코딩 방법 및 이러한 방법을 사용하는 영상 부호화/복호화 장치 및 방법 |
Publications (2)
Publication Number | Publication Date |
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WO2012099433A2 WO2012099433A2 (ko) | 2012-07-26 |
WO2012099433A3 true WO2012099433A3 (ko) | 2012-12-06 |
Family
ID=46516264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/KR2012/000540 WO2012099433A2 (ko) | 2011-01-20 | 2012-01-20 | 인덱스 매핑 테이블을 이용한 엔트로피 코딩 방법 및 이러한 방법을 사용하는 영상 부호화/복호화 장치 및 방법 |
Country Status (1)
Country | Link |
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WO (1) | WO2012099433A2 (ko) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20040070525A1 (en) * | 2002-06-20 | 2004-04-15 | Nokia Corporation | Method and a system for variable-length decoding, and a device for the localization of codewords |
US20050146451A1 (en) * | 2002-04-26 | 2005-07-07 | Ntt Docomo, Inc. | Signal encoding method, signal decoding method, signal encoding apparatus, signal decoding apparatus, signal encoding program, and signal decoding program |
US20060158355A1 (en) * | 2005-01-14 | 2006-07-20 | Sungkyunkwan University | Methods of and apparatuses for adaptive entropy encoding and adaptive entropy decoding for scalable video encoding |
US20090153378A1 (en) * | 2002-04-25 | 2009-06-18 | Shunichi Sekiguchi | Digital signal coding apparatus, digital signal decoding apparatus; digital signal arithmetic coding method, and digital signal arithmetic decoding method |
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2012
- 2012-01-20 WO PCT/KR2012/000540 patent/WO2012099433A2/ko active Application Filing
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20090153378A1 (en) * | 2002-04-25 | 2009-06-18 | Shunichi Sekiguchi | Digital signal coding apparatus, digital signal decoding apparatus; digital signal arithmetic coding method, and digital signal arithmetic decoding method |
US20050146451A1 (en) * | 2002-04-26 | 2005-07-07 | Ntt Docomo, Inc. | Signal encoding method, signal decoding method, signal encoding apparatus, signal decoding apparatus, signal encoding program, and signal decoding program |
US20040070525A1 (en) * | 2002-06-20 | 2004-04-15 | Nokia Corporation | Method and a system for variable-length decoding, and a device for the localization of codewords |
US20060158355A1 (en) * | 2005-01-14 | 2006-07-20 | Sungkyunkwan University | Methods of and apparatuses for adaptive entropy encoding and adaptive entropy decoding for scalable video encoding |
Also Published As
Publication number | Publication date |
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WO2012099433A2 (ko) | 2012-07-26 |
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