BRPI0922846A2 - alternando entre modos de codificação do coeficiente dct - Google Patents

alternando entre modos de codificação do coeficiente dct

Info

Publication number
BRPI0922846A2
BRPI0922846A2 BRPI0922846A BRPI0922846A BRPI0922846A2 BR PI0922846 A2 BRPI0922846 A2 BR PI0922846A2 BR PI0922846 A BRPI0922846 A BR PI0922846A BR PI0922846 A BRPI0922846 A BR PI0922846A BR PI0922846 A2 BRPI0922846 A2 BR PI0922846A2
Authority
BR
Brazil
Prior art keywords
switching
dct coefficient
coding modes
coefficient coding
modes
Prior art date
Application number
BRPI0922846A
Other languages
English (en)
Inventor
Hallapuro Antii
Lainema Jani
Ugur Kemal
Original Assignee
Nokia Corp
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
Application filed by Nokia Corp filed Critical Nokia Corp
Publication of BRPI0922846A2 publication Critical patent/BRPI0922846A2/pt

Links

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
    • H04N19/102—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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • 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
    • H03M7/60—General implementation details not specific to a particular type of compression
    • H03M7/6064—Selection of Compressor
    • H03M7/6082—Selection strategies
    • H03M7/6094—Selection strategies according to reasons other than compression rate or data type
    • 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]
    • 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
    • H04N19/14—Coding unit complexity, e.g. amount of activity or edge presence estimation
    • 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
    • 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
    • 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
    • H03—ELECTRONIC CIRCUITRY
    • 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
    • H03M7/46—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind
    • H03M7/48—Conversion to or from run-length codes, i.e. by representing the number of consecutive digits, or groups of digits, of the same kind by a code word and a digit indicative of that kind alternating with other codes during the code conversion process, e.g. run-length coding being performed only as long as sufficientlylong runs of digits of the same kind are present

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
  • Image Processing (AREA)
BRPI0922846A 2008-12-03 2009-11-23 alternando entre modos de codificação do coeficiente dct BRPI0922846A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US11969608P 2008-12-03 2008-12-03
PCT/FI2009/050945 WO2010063883A1 (en) 2008-12-03 2009-11-23 Switching between dct coefficient coding modes

Publications (1)

Publication Number Publication Date
BRPI0922846A2 true BRPI0922846A2 (pt) 2018-01-30

Family

ID=42232920

Family Applications (1)

Application Number Title Priority Date Filing Date
BRPI0922846A BRPI0922846A2 (pt) 2008-12-03 2009-11-23 alternando entre modos de codificação do coeficiente dct

Country Status (12)

Country Link
US (1) US20100150226A1 (pt)
EP (1) EP2371066A4 (pt)
KR (1) KR101196792B1 (pt)
CN (1) CN102273080A (pt)
AU (1) AU2009324014A1 (pt)
BR (1) BRPI0922846A2 (pt)
CA (1) CA2745314A1 (pt)
MX (1) MX2011005749A (pt)
RU (1) RU2487473C2 (pt)
SG (1) SG171883A1 (pt)
TW (1) TW201028014A (pt)
WO (1) WO2010063883A1 (pt)

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KR101483179B1 (ko) * 2010-10-06 2015-01-19 에스케이 텔레콤주식회사 주파수 마스크 테이블을 이용한 주파수변환 블록 부호화 방법 및 장치와 그를 이용한 영상 부호화/복호화 방법 및 장치
US9497472B2 (en) * 2010-11-16 2016-11-15 Qualcomm Incorporated Parallel context calculation in video coding
US8976861B2 (en) 2010-12-03 2015-03-10 Qualcomm Incorporated Separately coding the position of a last significant coefficient of a video block in video coding
US9042440B2 (en) 2010-12-03 2015-05-26 Qualcomm Incorporated Coding the position of a last significant coefficient within a video block based on a scanning order for the block in video coding
US20120163456A1 (en) 2010-12-22 2012-06-28 Qualcomm Incorporated Using a most probable scanning order to efficiently code scanning order information for a video block in video coding
US9490839B2 (en) 2011-01-03 2016-11-08 Qualcomm Incorporated Variable length coding of video block coefficients
US9338449B2 (en) 2011-03-08 2016-05-10 Qualcomm Incorporated Harmonized scan order for coding transform coefficients in video coding
US9106913B2 (en) 2011-03-08 2015-08-11 Qualcomm Incorporated Coding of transform coefficients for video coding
JP6051156B2 (ja) * 2011-04-27 2016-12-27 シャープ株式会社 画像復号装置および画像符号化装置
US8730930B2 (en) * 2011-05-31 2014-05-20 Broadcom Corporation Polling using B-ACK for occasional back-channel traffic in VoWIFI applications
US9491491B2 (en) 2011-06-03 2016-11-08 Qualcomm Incorporated Run-mode based coefficient coding for video coding
MX2013014868A (es) 2011-06-16 2014-05-28 Fraunhofer Ges Forschung Inicializacion de contexto en codificacion de entropia.
US9491469B2 (en) 2011-06-28 2016-11-08 Qualcomm Incorporated Coding of last significant transform coefficient
US9516316B2 (en) 2011-06-29 2016-12-06 Qualcomm Incorporated VLC coefficient coding for large chroma block
US20130003859A1 (en) * 2011-06-30 2013-01-03 Qualcomm Incorporated Transition between run and level coding modes
US9338456B2 (en) 2011-07-11 2016-05-10 Qualcomm Incorporated Coding syntax elements using VLC codewords
UA114674C2 (uk) 2011-07-15 2017-07-10 ДЖ.І. ВІДІЕУ КЕМПРЕШН, ЛЛСі Ініціалізація контексту в ентропійному кодуванні
CN103814396B (zh) * 2011-07-18 2017-03-08 汤姆逊许可公司 编解码比特流的方法和装置
FR2982447A1 (fr) 2011-11-07 2013-05-10 France Telecom Procede de codage et decodage d'images, dispositif de codage et decodage et programmes d'ordinateur correspondants
FR2982446A1 (fr) * 2011-11-07 2013-05-10 France Telecom Procede de codage et decodage d'images, dispositif de codage et decodage et programmes d'ordinateur correspondants
US10390046B2 (en) 2011-11-07 2019-08-20 Qualcomm Incorporated Coding significant coefficient information in transform skip mode
MX346550B (es) 2012-01-20 2017-03-24 Fraunhofer Ges Forschung Codificación de coeficiente de transformada.
CN103313048B (zh) * 2012-03-14 2017-12-22 中兴通讯股份有限公司 自适应控制算术编码上下文编码模式bin数量的方法
US8891888B2 (en) * 2012-09-05 2014-11-18 Google Inc. Entropy coding for recompression of images
EP2946553B1 (en) * 2013-01-16 2019-01-02 BlackBerry Limited Transform coefficient coding for context-adaptive binary entropy coding of video
CN103731155A (zh) * 2013-12-31 2014-04-16 成都华日通讯技术有限公司 无线电频谱信号的时域压缩方法
CN104902207B (zh) * 2015-06-17 2018-03-30 四川特伦特科技股份有限公司 一种高速信号采集方法
US10171810B2 (en) * 2015-06-22 2019-01-01 Cisco Technology, Inc. Transform coefficient coding using level-mode and run-mode
WO2018128323A1 (ko) * 2017-01-03 2018-07-12 엘지전자(주) 이차 변환을 이용한 비디오 신호의 인코딩/디코딩 방법 및 장치
WO2020062125A1 (zh) * 2018-09-29 2020-04-02 富士通株式会社 图像编码方法、装置以及电子设备

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JP4260908B2 (ja) * 1997-06-25 2009-04-30 株式会社日本デジタル研究所 ランレングス符号化方法および画像処理装置
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US6690307B2 (en) * 2002-01-22 2004-02-10 Nokia Corporation Adaptive variable length coding of digital video
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ATE381090T1 (de) * 2002-09-04 2007-12-15 Microsoft Corp Entropische kodierung mittels anpassung des kodierungsmodus zwischen niveau- und lauflängenniveau-modus
KR100703283B1 (ko) * 2004-03-15 2007-04-03 삼성전자주식회사 회전 매칭을 통해 움직임을 예측하는 영상 부호화 장치 및방법
US20050232497A1 (en) * 2004-04-15 2005-10-20 Microsoft Corporation High-fidelity transcoding
US7366238B2 (en) * 2004-05-07 2008-04-29 Micronas Usa, Inc. Noise filter for video processing
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US7620258B2 (en) * 2004-08-18 2009-11-17 Cisco Technology, Inc. Extended amplitude coding for clustered transform coefficients
CN100403801C (zh) * 2005-09-23 2008-07-16 联合信源数字音视频技术（北京）有限公司 一种基于上下文的自适应熵编/解码方法
US20080002770A1 (en) * 2006-06-30 2008-01-03 Nokia Corporation Methods, apparatus, and a computer program product for providing a fast inter mode decision for video encoding in resource constrained devices
US7949195B2 (en) * 2007-01-16 2011-05-24 Cisco Technology, Inc. Per block breakpoint determining for hybrid variable length coding

Also Published As

Publication number Publication date
MX2011005749A (es) 2011-06-20
CA2745314A1 (en) 2010-06-10
WO2010063883A1 (en) 2010-06-10
KR101196792B1 (ko) 2012-11-05
RU2011126942A (ru) 2013-01-10
TW201028014A (en) 2010-07-16
KR20110100256A (ko) 2011-09-09
SG171883A1 (en) 2011-07-28
AU2009324014A1 (en) 2011-06-23
US20100150226A1 (en) 2010-06-17
RU2487473C2 (ru) 2013-07-10
CN102273080A (zh) 2011-12-07
EP2371066A4 (en) 2014-06-04
EP2371066A1 (en) 2011-10-05

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Legal Events

Date Code Title Description
B08F Application dismissed because of non-payment of annual fees [chapter 8.6 patent gazette]
B15K Others concerning applications: alteration of classification

Ipc: H03M 7/46 (2006.01), H03M 7/48 (2006.01), G06T 9/0

B08K Patent lapsed as no evidence of payment of the annual fee has been furnished to inpi [chapter 8.11 patent gazette]
B25B Requested transfer of rights rejected

Owner name: NOKIA CORPORATION (FI)