[go: up one dir, main page]

PL2288163T3 - Sposób i urządzenie do dekodowania sygnału wideo - Google Patents

Sposób i urządzenie do dekodowania sygnału wideo

Info

Publication number
PL2288163T3
PL2288163T3 PL09742849T PL09742849T PL2288163T3 PL 2288163 T3 PL2288163 T3 PL 2288163T3 PL 09742849 T PL09742849 T PL 09742849T PL 09742849 T PL09742849 T PL 09742849T PL 2288163 T3 PL2288163 T3 PL 2288163T3
Authority
PL
Poland
Prior art keywords
video signal
decoding video
decoding
signal
video
Prior art date
Application number
PL09742849T
Other languages
English (en)
Inventor
Jae Won Sung
Seung Wook Park
Yong Joon Jeon
Jung Sun Kim
Young Hee Choi
Byeong Moon Jeon
Joon Young Park
Original Assignee
Lg Electronics Inc
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 Lg Electronics Inc filed Critical Lg Electronics Inc
Publication of PL2288163T3 publication Critical patent/PL2288163T3/pl

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/593Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial prediction techniques
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102Methods 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
    • H04N19/103Selection of coding mode or of prediction mode
    • H04N19/105Selection 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/102Methods 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
    • H04N19/103Selection of coding mode or of prediction mode
    • H04N19/11Selection of coding mode or of prediction mode among a plurality of spatial predictive coding modes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134Methods 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
    • H04N19/136Incoming video signal characteristics or properties
    • H04N19/14Coding unit complexity, e.g. amount of activity or edge presence estimation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134Methods 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
    • H04N19/157Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134Methods 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
    • H04N19/157Assigned coding mode, i.e. the coding mode being predefined or preselected to be further used for selection of another element or parameter
    • H04N19/159Prediction type, e.g. intra-frame, inter-frame or bidirectional frame prediction
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/134Methods 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
    • H04N19/164Feedback from the receiver or from the transmission channel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169Methods 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
    • H04N19/17Methods 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
    • H04N19/176Methods 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/10Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using adaptive coding
    • H04N19/169Methods 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
    • H04N19/182Methods 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 pixel
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/44Decoders specially adapted therefor, e.g. video decoders which are asymmetric with respect to the encoder
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/46Embedding additional information in the video signal during the compression process
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/60Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
    • H04N19/61Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding in combination with predictive coding
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/85Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • H04N19/86Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression involving reduction of coding artifacts, e.g. of blockiness

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
PL09742849T 2008-05-07 2009-05-07 Sposób i urządzenie do dekodowania sygnału wideo PL2288163T3 (pl)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US5134308P 2008-05-07 2008-05-07
US10201208P 2008-10-02 2008-10-02
KR1020090039683A KR101596829B1 (ko) 2008-05-07 2009-05-07 비디오 신호의 디코딩 방법 및 장치
EP09742849.4A EP2288163B1 (en) 2008-05-07 2009-05-07 Method and apparatus for decoding video signal
PCT/KR2009/002403 WO2009136743A2 (ko) 2008-05-07 2009-05-07 비디오 신호의 디코딩 방법 및 장치

Publications (1)

Publication Number Publication Date
PL2288163T3 true PL2288163T3 (pl) 2015-11-30

Family

ID=43879268

Family Applications (2)

Application Number Title Priority Date Filing Date
PL09742849T PL2288163T3 (pl) 2008-05-07 2009-05-07 Sposób i urządzenie do dekodowania sygnału wideo
PL15000810T PL2924994T3 (pl) 2008-05-07 2009-05-07 Sposób i aparat do dekodowania sygnału wideo

Family Applications After (1)

Application Number Title Priority Date Filing Date
PL15000810T PL2924994T3 (pl) 2008-05-07 2009-05-07 Sposób i aparat do dekodowania sygnału wideo

Country Status (6)

Country Link
US (8) US9277244B2 (pl)
EP (2) EP2288163B1 (pl)
KR (4) KR101596829B1 (pl)
ES (1) ES2541807T3 (pl)
PL (2) PL2288163T3 (pl)
WO (1) WO2009136743A2 (pl)

Families Citing this family (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2288163B1 (en) 2008-05-07 2015-07-01 Lg Electronics Inc. Method and apparatus for decoding video signal
US8634466B2 (en) * 2009-03-17 2014-01-21 Freescale Semiconductor, Inc. Video decoder plus a discrete cosine transform unit
WO2011005063A2 (en) * 2009-07-10 2011-01-13 Samsung Electronics Co., Ltd. Spatial prediction method and apparatus in layered video coding
JP5378939B2 (ja) * 2009-10-02 2013-12-25 日立コンシューマエレクトロニクス株式会社 画像符号化方法、画像復号化方法、画像符号化装置、及び画像復号化装置、並びにプログラム
KR101700358B1 (ko) * 2009-12-09 2017-01-26 삼성전자주식회사 영상의 부호화 방법 및 장치, 그 복호화 방법 및 장치
USRE47243E1 (en) * 2009-12-09 2019-02-12 Samsung Electronics Co., Ltd. Method and apparatus for encoding video, and method and apparatus for decoding video
KR101663235B1 (ko) * 2009-12-14 2016-10-06 한국과학기술원 화면 내 예측 부호화/복호화 방법 및 장치
FR2955730A1 (fr) * 2010-01-25 2011-07-29 Thomson Licensing Procedes de codage et de decodage
US9794556B2 (en) 2010-02-17 2017-10-17 Electronics And Telecommunications Research Institute Method and device for simplifying encoding and decoding of ultra-high definition images
KR20110123651A (ko) * 2010-05-07 2011-11-15 한국전자통신연구원 생략 부호화를 이용한 영상 부호화 및 복호화 장치 및 그 방법
PL3962081T3 (pl) 2010-05-25 2024-06-10 Lg Electronics Inc. Nowy tryb predykcji planarnej
KR20120012385A (ko) 2010-07-31 2012-02-09 오수미 인트라 예측 부호화 장치
KR20180039754A (ko) 2010-08-17 2018-04-18 엠앤케이홀딩스 주식회사 영상 복호화 장치
US11284072B2 (en) 2010-08-17 2022-03-22 M&K Holdings Inc. Apparatus for decoding an image
CN105516722B (zh) 2010-09-30 2018-12-07 三菱电机株式会社 运动图像编码装置及方法、运动图像解码装置及方法
US9258573B2 (en) * 2010-12-07 2016-02-09 Panasonic Intellectual Property Corporation Of America Pixel adaptive intra smoothing
KR20210111901A (ko) * 2010-12-22 2021-09-13 엘지전자 주식회사 화면 내 예측 방법 및 이러한 방법을 사용하는 장치
KR101774392B1 (ko) 2010-12-22 2017-09-04 엘지전자 주식회사 화면 내 예측 방법 및 이러한 방법을 사용하는 장치
KR102245790B1 (ko) 2011-01-07 2021-04-28 엘지전자 주식회사 영상 정보 부호화 방법 및 복호화 방법과 이를 이용한 장치
ES2685945T3 (es) 2011-04-12 2018-10-15 Sun Patent Trust Procedimiento de codificación de video de movimiento, y aparato de codificación de video de movimiento
US10142623B2 (en) * 2011-04-12 2018-11-27 Electronics And Telecommunications Research Institute Image encoding method using a skip mode, and a device using the method
GB2561264B (en) * 2011-05-20 2019-01-02 Kt Corp Method and apparatus for intra prediction within display screen
KR101383775B1 (ko) 2011-05-20 2014-04-14 주식회사 케이티 화면 내 예측 방법 및 장치
EP3751854B1 (en) 2011-05-24 2023-05-10 Sun Patent Trust Image encoding method, image encoding apparatus, image decoding method, image decoding apparatus
EP3614665B1 (en) 2011-05-27 2022-03-23 Sun Patent Trust Apparatus, method and program for decoding moving pictures
US9485518B2 (en) 2011-05-27 2016-11-01 Sun Patent Trust Decoding method and apparatus with candidate motion vectors
SG194746A1 (en) 2011-05-31 2013-12-30 Kaba Gmbh Image encoding method, image encoding device, image decoding method, image decoding device, and image encoding/decoding device
ES2971526T3 (es) 2011-05-31 2024-06-05 Sun Patent Trust Procedimiento de descodificación de vídeo, dispositivo de descodificación de vídeo
US9602839B2 (en) 2011-06-15 2017-03-21 Futurewei Technologies, Inc. Mode dependent intra smoothing filter table mapping methods for non-square prediction units
US10306222B2 (en) * 2011-06-20 2019-05-28 Hfi Innovation Inc. Method and apparatus of directional intra prediction
CN107105242B (zh) 2011-06-24 2020-03-06 Lg 电子株式会社 一种用于解码图片的解码装置和编码图片的编码装置
CN106686382B (zh) 2011-06-24 2019-06-18 三菱电机株式会社 图像编码装置和方法、图像解码装置和方法以及记录介质
CN106851269B (zh) 2011-06-30 2019-11-15 太阳专利托管公司 图像解码方法及装置、图像编码方法及装置、编解码装置
MX341415B (es) 2011-08-03 2016-08-19 Panasonic Ip Corp America Metodo de codificacion de video, aparato de codificacion de video, metodo de decodificacion de video, aparato de decodificacion de video y aparato de codificacion/decodificacion de video.
RU2713857C2 (ru) * 2011-10-17 2020-02-07 Кт Корпорейшен Способ декодирования видеосигнала
JP6308495B2 (ja) 2011-10-19 2018-04-11 サン パテント トラスト 画像復号方法、および、画像復号装置
CN110809157B (zh) 2012-01-18 2023-05-02 韩国电子通信研究院 视频解码装置、视频编码装置和传输比特流的方法
KR20160075753A (ko) * 2012-05-10 2016-06-29 엘지전자 주식회사 비디오 신호 처리 방법 및 장치
TWI575937B (zh) * 2015-07-24 2017-03-21 矽創電子股份有限公司 Image prediction and decoding method and encoding / decoder
CN108353185B (zh) 2015-08-28 2022-09-13 株式会社Kt 用于处理视频信号的方法和设备
EP3148190A1 (en) * 2015-09-25 2017-03-29 Thomson Licensing Method and apparatus for intra prediction in video encoding and decoding
WO2017188782A2 (ko) 2016-04-29 2017-11-02 세종대학교 산학협력단 영상 신호 부호화/복호화 방법 및 장치
US10939125B2 (en) * 2016-04-29 2021-03-02 Industry Academy Cooperation Foundation Of Sejong University Method and apparatus for encoding/decoding image signal
CA3145758A1 (en) 2016-10-11 2018-04-19 Lg Electronics Inc. Image decoding method and apparatus relying on intra prediction in image coding system
CN111083484B (zh) 2018-10-22 2024-06-28 北京字节跳动网络技术有限公司 基于子块的预测
CN111083489B (zh) 2018-10-22 2024-05-14 北京字节跳动网络技术有限公司 多次迭代运动矢量细化
CN111436230B (zh) 2018-11-12 2024-10-11 北京字节跳动网络技术有限公司 仿射预测的带宽控制方法
JP7241870B2 (ja) 2018-11-20 2023-03-17 北京字節跳動網絡技術有限公司 部分的な位置に基づく差分計算
CN113170097B (zh) 2018-11-20 2024-04-09 北京字节跳动网络技术有限公司 视频编解码模式的编解码和解码
WO2020177756A1 (en) 2019-03-06 2020-09-10 Beijing Bytedance Network Technology Co., Ltd. Size dependent inter coding
KR102838856B1 (ko) * 2019-12-23 2025-07-24 엘지전자 주식회사 Nal 유닛 타입 기반 영상 또는 비디오 코딩
CN116074529B (zh) * 2022-01-07 2024-11-01 杭州海康威视数字技术股份有限公司 图像编解码方法、装置及存储介质

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5812197A (en) * 1995-05-08 1998-09-22 Thomson Consumer Electronics, Inc. System using data correlation for predictive encoding of video image data subject to luminance gradients and motion
DE10158658A1 (de) 2001-11-30 2003-06-12 Bosch Gmbh Robert Verfahren zur gerichteten Prädiktion eines Bildblockes
JP3975188B2 (ja) 2002-09-30 2007-09-12 三星電子株式会社 色相の空間予測符号化を利用した映像の符号化及び復号化方法及び装置
US7463686B2 (en) 2002-10-16 2008-12-09 Lg Electronics Inc. Method for determining motion vector and macroblock type
JP2004304724A (ja) 2003-04-01 2004-10-28 Sony Corp 画像処理装置とその方法、並びに符号化装置
HUP0301368A3 (en) 2003-05-20 2005-09-28 Amt Advanced Multimedia Techno Method and equipment for compressing motion picture data
US8422546B2 (en) * 2005-05-25 2013-04-16 Microsoft Corporation Adaptive video encoding using a perceptual model
KR100727990B1 (ko) 2005-10-01 2007-06-13 삼성전자주식회사 영상의 인트라 예측 부호화 방법 및 그 방법을 사용하는부호화 장치
KR100750145B1 (ko) 2005-12-12 2007-08-21 삼성전자주식회사 영상의 인트라 예측 부호화, 복호화 방법 및 장치
AU2006346583B2 (en) * 2006-07-28 2011-04-28 Kabushiki Kaisha Toshiba Image encoding and decoding method and apparatus
JP4751932B2 (ja) 2006-07-28 2011-08-17 富士通株式会社 位相検出装置および位相同期装置
US8542736B2 (en) 2006-10-18 2013-09-24 Thomson Licensing Method and apparatus for video coding using prediction data refinement
KR20080082143A (ko) * 2007-03-07 2008-09-11 삼성전자주식회사 영상 부호화 방법 및 장치, 복호화 방법 및 장치
KR101375664B1 (ko) * 2007-10-29 2014-03-20 삼성전자주식회사 영상의 디퓨전 특성을 이용한 영상 부호화/복호화 방법 및장치
EP2288163B1 (en) 2008-05-07 2015-07-01 Lg Electronics Inc. Method and apparatus for decoding video signal

Also Published As

Publication number Publication date
US11375234B2 (en) 2022-06-28
ES2541807T3 (es) 2015-07-24
US20170171561A1 (en) 2017-06-15
US20160212445A1 (en) 2016-07-21
US12058369B2 (en) 2024-08-06
EP2288163A2 (en) 2011-02-23
US20220295098A1 (en) 2022-09-15
WO2009136743A3 (ko) 2010-03-04
US20110090969A1 (en) 2011-04-21
WO2009136743A2 (ko) 2009-11-12
KR102453759B1 (ko) 2022-10-11
US10880575B2 (en) 2020-12-29
KR20210097093A (ko) 2021-08-06
EP2924994B1 (en) 2016-09-21
EP2288163B1 (en) 2015-07-01
KR20090116655A (ko) 2009-11-11
US20200177915A1 (en) 2020-06-04
EP2924994A1 (en) 2015-09-30
US20210076067A1 (en) 2021-03-11
KR20220140679A (ko) 2022-10-18
KR102636372B1 (ko) 2024-02-13
KR20210156812A (ko) 2021-12-27
US20190110074A1 (en) 2019-04-11
US9277244B2 (en) 2016-03-01
US20240340448A1 (en) 2024-10-10
KR102340559B1 (ko) 2021-12-16
PL2924994T3 (pl) 2017-07-31
US9756358B2 (en) 2017-09-05
EP2288163A4 (en) 2011-08-03
US10555003B2 (en) 2020-02-04
US10306263B2 (en) 2019-05-28
KR101596829B1 (ko) 2016-02-23

Similar Documents

Publication Publication Date Title
PL2924994T3 (pl) Sposób i aparat do dekodowania sygnału wideo
HRP20182053T1 (hr) Postupak i uređaj za kodiranje videa
LT3448031T (lt) Vaizdo dekodavimo aparatas ir dekodavimo būdas
ZA201005949B (en) Video encoding/decoding method and apparatus
EP2515542A4 (en) METHOD AND DEVICE FOR DECODING VIDEO SIGNALS
PL2416577T3 (pl) Urządzenie do dekodowania sygnału obrazu i sposób dekodowania sygnału obrazu
TWI349927B (en) Method and apparatus for encoding and decoding audio signals
ZA200906254B (en) Video encoding and decoding method and apparatus
EP2149262A4 (en) METHOD AND DEVICE FOR DECODING / CODING A VIDEO SIGNAL
EP2130374A4 (en) METHOD AND ARRANGEMENT FOR DECODING / CODING A VIDEO SIGNAL
EP2135454A4 (en) METHOD AND DEVICE FOR DECODING / CODING A VIDEO SIGNAL
EP2321969A4 (en) METHOD AND APPARATUS FOR VIDEO TRANSMISSION
PL4080881T3 (pl) Sposób i urządzenie do kodowania wideo oraz sposób i urządzenie do dekodowania wideo
HUE047440T2 (hu) Berendezés és eljárás többcsatornás jel dekódolására
EP2186339A4 (en) METHOD AND APPARATUS FOR PROCESSING VIDEO SIGNAL
GB0804888D0 (en) Method and apparatus for processing audiovisual signals
EP2312852A4 (en) METHOD AND APPARATUS FOR ENCODING AND DECODING
PL2958324T3 (pl) Sposób i urządzenie do dekodowania sygnału wideo