WO2012099433A3 - Procédé de codage entropique utilisant une table de mise en correspondance d'indices, appareil et procédé de codage/décodage d'image utilisant ledit procédé de codage entropique - Google Patents

Procédé de codage entropique utilisant une table de mise en correspondance d'indices, appareil et procédé de codage/décodage d'image utilisant ledit procédé de codage entropique Download PDF

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Publication number
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
Authority
WO
WIPO (PCT)
Prior art keywords
mapping table
entropy coding
coding method
encoding
index
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/KR2012/000540
Other languages
English (en)
Korean (ko)
Other versions
WO2012099433A2 (fr
Inventor
김종호
김휘용
임성창
이하현
이진호
정세윤
최진수
김진웅
안치득
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Electronics and Telecommunications Research Institute
Original Assignee
Electronics and Telecommunications Research Institute
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from KR1020110049246A external-priority patent/KR20120084639A/ko
Application filed by Electronics and Telecommunications Research Institute filed Critical Electronics and Telecommunications Research Institute
Priority to US13/980,521 priority Critical patent/US9053525B2/en
Publication of WO2012099433A2 publication Critical patent/WO2012099433A2/fr
Publication of WO2012099433A3 publication Critical patent/WO2012099433A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • 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
    • 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
    • H04N19/90—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

Landscapes

  • 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

La présente invention concerne un procédé de codage entropique utilisant une table de mise en correspondance d'indices et un appareil utilisant ledit procédé. Un procédé de décodage d'image comprend : une étape de mise en correspondance d'un mot de code entré avec un numéro de code en référence à une table de mise en correspondance inverse de mots de code, suivie du calcul du numéro de code mis en correspondance pour former un indice de la table ; et une étape de mise à jour de la table de mise en correspondance inverse sur la base du nombre accumulé d'occurrences du numéro de code, du nombre d'occurrences séquentielles du numéro de code, des informations de codage/décodage du bloc voisin et/ou des informations de valeur de seuil afin de mettre à jour la table de mise en correspondance d'indices inverse. Selon la présente invention, une table de mise en correspondance d'indices est réalignée sur la base d'une certaine condition, améliorant de cette façon l'efficacité du codage/décodage.
PCT/KR2012/000540 2011-01-20 2012-01-20 Procédé de codage entropique utilisant une table de mise en correspondance d'indices, appareil et procédé de codage/décodage d'image utilisant ledit procédé de codage entropique Ceased WO2012099433A2 (fr)

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
KR20110005707 2011-01-20
KR10-2011-0005707 2011-01-20
KR10-2011-0049246 2011-05-24
KR1020110049246A KR20120084639A (ko) 2011-01-20 2011-05-24 엔트로피 부호화를 위한 적응적 정렬 테이블
KR20110092189A KR20120084648A (ko) 2011-01-20 2011-09-09 엔트로피 부호화를 위한 적응적 정렬 테이블
KR10-2011-0092189 2011-09-09
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
WO2012099433A2 WO2012099433A2 (fr) 2012-07-26
WO2012099433A3 true WO2012099433A3 (fr) 2012-12-06

Family

ID=46516264

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2012/000540 Ceased WO2012099433A2 (fr) 2011-01-20 2012-01-20 Procédé de codage entropique utilisant une table de mise en correspondance d'indices, appareil et procédé de codage/décodage d'image utilisant ledit procédé de codage entropique

Country Status (1)

Country Link
WO (1) WO2012099433A2 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
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

Patent Citations (4)

* Cited by examiner, † Cited by third party
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
WO2012099433A2 (fr) 2012-07-26

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