WO2012099433A3 - Entropy coding method using an index mapping table, and image-encoding/decoding apparatus and method using said entropy coding method - Google Patents

Entropy coding method using an index mapping table, and image-encoding/decoding apparatus and method using said entropy coding method 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
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WO
WIPO (PCT)
Prior art keywords
mapping table
entropy coding
coding method
encoding
index
Prior art date
Application number
PCT/KR2012/000540
Other languages
French (fr)
Korean (ko)
Other versions
WO2012099433A2 (en
Inventor
김종호
김휘용
임성창
이하현
이진호
정세윤
최진수
김진웅
안치득
Original Assignee
한국전자통신연구원
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/en
Application filed by 한국전자통신연구원 filed Critical 한국전자통신연구원
Priority to US13/980,521 priority Critical patent/US9053525B2/en
Publication of WO2012099433A2 publication Critical patent/WO2012099433A2/en
Publication of WO2012099433A3 publication Critical patent/WO2012099433A3/en

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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

Abstract

Disclosed is an entropy coding method using an index mapping table, and an apparatus using the method. An image-decoding method comprises: a step of mapping an inputted codeword to a code number with reference to an inverse codeword mapping table, and calculating the mapped code number in a table index; and a step of updating the inverse mapping table based on the accumulated number of occurrences of the code number, the number of sequential occurrences of the code number, neighbor block encoding/decoding information, and/or threshold value information for updating the inverse index mapping table. According to the present invention, an index mapping table is realigned based on a certain condition, thereby improving encoding/decoding efficiency.
PCT/KR2012/000540 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 WO2012099433A2 (en)

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 (en) 2011-01-20 2011-05-24 Adaptive sorting table for entropy coding
KR10-2011-0049246 2011-05-24
KR20110092189A KR20120084648A (en) 2011-01-20 2011-09-09 Adaptive sorting table for entropy coding
KR10-2011-0092189 2011-09-09
KR20120006574A KR20120084688A (en) 2011-01-20 2012-01-20 Methods of entropy coding usnig index mapping table and video encoder/decoder for using the same
KR10-2012-0006574 2012-01-20

Publications (2)

Publication Number Publication Date
WO2012099433A2 WO2012099433A2 (en) 2012-07-26
WO2012099433A3 true WO2012099433A3 (en) 2012-12-06

Family

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Family Applications (1)

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PCT/KR2012/000540 WO2012099433A2 (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

Country Status (1)

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WO (1) WO2012099433A2 (en)

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

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