WO2011012669A2 - Method for decoding a stream of coded data representative of a sequence of images and method for coding a sequence of images - Google Patents
Method for decoding a stream of coded data representative of a sequence of images and method for coding a sequence of images Download PDFInfo
- Publication number
- WO2011012669A2 WO2011012669A2 PCT/EP2010/061013 EP2010061013W WO2011012669A2 WO 2011012669 A2 WO2011012669 A2 WO 2011012669A2 EP 2010061013 W EP2010061013 W EP 2010061013W WO 2011012669 A2 WO2011012669 A2 WO 2011012669A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- average
- block
- prediction
- current block
- avr
- Prior art date
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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
- H04N19/102—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
- H04N19/105—Selection of the reference unit for prediction within a chosen coding or prediction mode, e.g. adaptive choice of position and number of pixels used for prediction
-
- 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
-
- 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
- H04N19/137—Motion inside a coding unit, e.g. average field, frame or block difference
-
- 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
- H04N19/157—Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
- H04N19/159—Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
-
- 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
- H04N19/46—Embedding additional information in the video signal during the compression process
-
- 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
- H04N19/50—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
- H04N19/503—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
Definitions
- the invention relates to a method for decoding a stream of coded data representative of a sequence of images divided into blocks comprising the following steps for a current block:
- the weighted prediction parameter is determined according to the following steps:
- the initial weighted prediction parameter is determined for a part of the image to which the current block belongs according to the following steps:
- step 2 the average avr pre d of the prediction block Bpred is determined.
- a(.) and b(.) are the coefficients of linear filters.
- (k,l) are integer numbers that vary for example from -1 to 1.
- a() may take the following values:
- the average avr pre d is equal to the average of luminance and chrominance values associated with the pixels of the prediction block Bpred.
- the average avr pr ⁇ d is equal to the average of chrominance values associated with the pixels of the prediction block Bpred. The same variants apply to the calculation of the average avr cr of the current block Bc.
- Bres(i,j) £a'(k,l)*Bcur(i + k,j + l)-wp cr dec *£b'(k,l)*Bpred(i + kJ + l)
- I resDC is thus the DC coefficient effectively coded in the stream F.
- the block of coefficients thus modified is then quantized and coded by entropy coding.
- entropy coding method well known to those skilled in the art of entropy coding VLC (Variable Length Coding) type video coders, using for example the pre-calculated VLC tables as described in chapter 3.5.2 of the book by I. E. Richardson entitled “H.264 and MPEG-4 video compression” published by J. Wiley & Sons in September 2003 is used.
- a CABAC Context-based Adaptive Binary Arithmetic Coding
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Compression Or Coding Systems Of Tv Signals (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP10742453.3A EP2460355B1 (en) | 2009-07-30 | 2010-07-29 | Method for decoding a stream of coded data representative of a sequence of images and method for coding a sequence of images |
CN201080033641.7A CN102474608B (en) | 2009-07-30 | 2010-07-29 | Method for decoding a stream of coded data representative of a sequence of images and method for coding a sequence of images |
KR1020127002427A KR101681353B1 (en) | 2009-07-30 | 2010-07-29 | Method for decoding a stream of coded data representative of a sequence of images and method for coding a sequence of images |
US13/388,047 US9008178B2 (en) | 2009-07-30 | 2010-07-29 | Method for decoding a stream of coded data representative of a sequence of images and method for coding a sequence of images |
JP2012522170A JP5545783B2 (en) | 2009-07-30 | 2010-07-29 | Method for decoding a stream of encoded data representing an image sequence and method for encoding an image sequence |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0955353 | 2009-07-30 | ||
FR0955353A FR2948845A1 (en) | 2009-07-30 | 2009-07-30 | METHOD FOR DECODING A FLOW REPRESENTATIVE OF AN IMAGE SEQUENCE AND METHOD FOR CODING AN IMAGE SEQUENCE |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2011012669A2 true WO2011012669A2 (en) | 2011-02-03 |
WO2011012669A3 WO2011012669A3 (en) | 2011-04-14 |
Family
ID=41719377
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2010/061013 WO2011012669A2 (en) | 2009-07-30 | 2010-07-29 | Method for decoding a stream of coded data representative of a sequence of images and method for coding a sequence of images |
Country Status (7)
Country | Link |
---|---|
US (1) | US9008178B2 (en) |
EP (1) | EP2460355B1 (en) |
JP (1) | JP5545783B2 (en) |
KR (1) | KR101681353B1 (en) |
CN (1) | CN102474608B (en) |
FR (1) | FR2948845A1 (en) |
WO (1) | WO2011012669A2 (en) |
Cited By (2)
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EP2587803A1 (en) | 2011-10-27 | 2013-05-01 | Thomson Licensing | Methods for coding and reconstructing a pixel block and corresponding devices. |
EP3096518A1 (en) * | 2015-05-20 | 2016-11-23 | Thomson Licensing | Methods, systems and apparatus for determining prediction adjustment factors |
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RU2510944C2 (en) * | 2012-07-03 | 2014-04-10 | Корпорация "САМСУНГ ЭЛЕКТРОНИКС Ко., Лтд." | Method of encoding/decoding multi-view video sequence based on adaptive local adjustment of brightness of key frames without transmitting additional parameters (versions) |
EP2683165B1 (en) * | 2012-07-04 | 2015-10-14 | Thomson Licensing | Method for coding and decoding a block of pixels from a motion model |
US9374597B2 (en) * | 2012-09-26 | 2016-06-21 | Thomson Licensing | Inter-image prediction method and device and corresponding encoding method and device |
EP3050294A4 (en) | 2013-09-27 | 2017-08-09 | Qualcomm Incorporated | Residual coding for depth intra prediction modes |
WO2015042751A1 (en) * | 2013-09-27 | 2015-04-02 | Qualcomm Incorporated | Residual coding for depth intra prediction modes |
EP3084968A4 (en) * | 2013-12-16 | 2017-11-29 | McAfee, LLC | Process efficient preprocessing for an encryption standard |
CN107810635A (en) | 2015-06-16 | 2018-03-16 | Lg 电子株式会社 | Method and apparatus based on illuminance compensation prediction block in image compiling system |
CN113596443A (en) * | 2015-08-20 | 2021-11-02 | 日本放送协会 | Image encoding device |
KR102601732B1 (en) * | 2016-05-31 | 2023-11-14 | 삼성디스플레이 주식회사 | Method for image encoding and method for image decoding |
JP2018056699A (en) * | 2016-09-27 | 2018-04-05 | 株式会社ドワンゴ | Encoder, encoding method, decoder and decoding method |
MX2019004151A (en) * | 2016-10-11 | 2019-08-05 | Lg Electronics Inc | Image decoding method and apparatus relying on intra prediction in image coding system. |
IT201700024294A1 (en) * | 2017-03-03 | 2018-09-03 | Sisvel Tech S R L | METHOD AND APPARATUS TO CODIFY AND DECODE DIGITAL VIDEO IMAGES OR FLOWS |
CN117425006A (en) * | 2017-03-22 | 2024-01-19 | 韩国电子通信研究院 | Prediction method and apparatus using reference block |
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JP2004007379A (en) | 2002-04-10 | 2004-01-08 | Toshiba Corp | Method for encoding moving image and method for decoding moving image |
KR100584552B1 (en) * | 2003-01-14 | 2006-05-30 | 삼성전자주식회사 | Method for encoding and decoding video and apparatus thereof |
CN101023673B (en) * | 2004-09-16 | 2011-06-08 | 汤姆逊许可证公司 | Video codec with weighted prediction utilizing local brightness variation |
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2009
- 2009-07-30 FR FR0955353A patent/FR2948845A1/en not_active Withdrawn
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2010
- 2010-07-29 KR KR1020127002427A patent/KR101681353B1/en active IP Right Grant
- 2010-07-29 EP EP10742453.3A patent/EP2460355B1/en active Active
- 2010-07-29 CN CN201080033641.7A patent/CN102474608B/en active Active
- 2010-07-29 JP JP2012522170A patent/JP5545783B2/en active Active
- 2010-07-29 WO PCT/EP2010/061013 patent/WO2011012669A2/en active Application Filing
- 2010-07-29 US US13/388,047 patent/US9008178B2/en active Active
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2587803A1 (en) | 2011-10-27 | 2013-05-01 | Thomson Licensing | Methods for coding and reconstructing a pixel block and corresponding devices. |
CN103096064A (en) * | 2011-10-27 | 2013-05-08 | 汤姆森特许公司 | Methods for coding and reconstructing a pixel block and corresponding devices |
JP2013098984A (en) * | 2011-10-27 | 2013-05-20 | Thomson Licensing | Method for coding and reconstructing pixel block, and corresponding device |
CN103096064B (en) * | 2011-10-27 | 2017-12-01 | 汤姆森特许公司 | The method and relevant device of coding and reconstructed pixel block |
EP3096518A1 (en) * | 2015-05-20 | 2016-11-23 | Thomson Licensing | Methods, systems and apparatus for determining prediction adjustment factors |
Also Published As
Publication number | Publication date |
---|---|
CN102474608B (en) | 2014-10-29 |
CN102474608A (en) | 2012-05-23 |
EP2460355A2 (en) | 2012-06-06 |
US9008178B2 (en) | 2015-04-14 |
KR20120039675A (en) | 2012-04-25 |
WO2011012669A3 (en) | 2011-04-14 |
JP5545783B2 (en) | 2014-07-09 |
US20120128068A1 (en) | 2012-05-24 |
FR2948845A1 (en) | 2011-02-04 |
JP2013500661A (en) | 2013-01-07 |
KR101681353B1 (en) | 2016-11-30 |
EP2460355B1 (en) | 2016-08-31 |
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