CN108462881B - 用于生成参考图像列表的方法及视频编码器装置 - Google Patents

用于生成参考图像列表的方法及视频编码器装置 Download PDF

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CN108462881B
CN108462881B CN201810359032.9A CN201810359032A CN108462881B CN 108462881 B CN108462881 B CN 108462881B CN 201810359032 A CN201810359032 A CN 201810359032A CN 108462881 B CN108462881 B CN 108462881B
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CN108462881A (zh
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叶琰
Y·何
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InterDigital VC Holdings Inc
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Vid Scale Inc
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
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    • 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
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    • HELECTRICITY
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    • 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
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    • H04N19/13Adaptive entropy coding, e.g. adaptive variable length coding [AVLC] or context adaptive binary arithmetic coding [CABAC]
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    • 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
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    • H04N19/139Analysis of motion vectors, e.g. their magnitude, direction, variance or reliability
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    • H04N19/146Data rate or code amount at the encoder output
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    • 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
    • H04N19/174Methods 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 slice, e.g. a line of blocks or a group of blocks
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    • H04N19/503Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • HELECTRICITY
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    • H04N19/50Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding
    • H04N19/503Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving temporal prediction
    • H04N19/51Motion estimation or motion compensation
    • H04N19/577Motion compensation with bidirectional frame interpolation, i.e. using B-pictures
    • HELECTRICITY
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    • H04N19/60Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using transform coding
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    • 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
    • H04N19/172Methods 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 picture, frame or field

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Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10034018B2 (en) * 2011-09-23 2018-07-24 Velos Media, Llc Decoded picture buffer management
WO2013109460A1 (en) * 2012-01-19 2013-07-25 Vid Scale, Inc. Method and apparatus for signaling and construction of video coding reference picture lists
WO2013154674A1 (en) * 2012-04-11 2013-10-17 Motorola Mobility Llc Evaluation of signaling of collocated reference picture for temporal prediction
JP6065613B2 (ja) * 2013-01-29 2017-01-25 富士通株式会社 動画像符号化装置
US20150172669A1 (en) * 2013-03-15 2015-06-18 KASAH Technology, Inc. System and method for processing compressed images and video for improved data communication
US10412387B2 (en) * 2014-08-22 2019-09-10 Qualcomm Incorporated Unified intra-block copy and inter-prediction
US9918105B2 (en) 2014-10-07 2018-03-13 Qualcomm Incorporated Intra BC and inter unification
AU2016253924B2 (en) * 2015-04-29 2018-11-01 Hfi Innovation Inc. Method and apparatus for intra block copy reference list construction
CN115134594B (zh) 2015-06-05 2024-07-23 杜比实验室特许公司 用于执行帧间预测的图像编解码方法、比特流存储方法
US11463736B2 (en) * 2018-09-21 2022-10-04 Sharp Kabushiki Kaisha Systems and methods for signaling reference pictures in video coding
CN117156127B (zh) * 2019-01-02 2026-02-10 Oppo广东移动通信有限公司 对视频信号进行编解码的方法和设备以及计算机可读介质
CN111726632B (zh) * 2019-03-18 2022-08-26 杭州海康威视数字技术股份有限公司 一种编解码方法、装置及其设备
CN119052501A (zh) * 2020-05-21 2024-11-29 阿里巴巴集团控股有限公司 用于进行视频数据处理的计算机实现方法、装置及存储介质
WO2022220382A1 (ko) * 2021-04-15 2022-10-20 엘지전자 주식회사 포인트 클라우드 데이터 전송 방법, 포인트 클라우드 데이터 전송 장치, 포인트 클라우드 데이터 수신 방법 및 포인트 클라우드 데이터 수신 장치
WO2022270978A1 (ko) 2021-06-25 2022-12-29 전남대학교 산학협력단 지방분해효소 억제제를 포함하는 rna 바이러스 감염증 예방 또는 치료용 약제학적 조성물
CN116881183A (zh) * 2023-09-06 2023-10-13 北京融为科技有限公司 译码数据处理方法及装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012122176A1 (en) * 2011-03-07 2012-09-13 Qualcomm Incorporated Decoded picture buffer management

Family Cites Families (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20050052484A (ko) * 1997-03-17 2005-06-02 마츠시타 덴끼 산교 가부시키가이샤 데이터 처리방법
JP2003259369A (ja) 2002-02-28 2003-09-12 Techno Mathematical Co Ltd 動画像の電子透かしを用いたエラー隠蔽方法
CN1312927C (zh) * 2002-07-15 2007-04-25 株式会社日立制作所 动态图像编码方法及解码方法
KR101125351B1 (ko) * 2003-12-19 2012-03-28 크리에이티브 테크놀로지 엘티디 디지털 이미지 처리 방법 및 시스템
KR100679740B1 (ko) 2004-06-25 2007-02-07 학교법인연세대학교 시점 선택이 가능한 다시점 동영상 부호화/복호화 방법
CN101116340A (zh) 2004-12-10 2008-01-30 韩国电子通信研究院 对多视图视频进行统一编码的装置
US8879635B2 (en) 2005-09-27 2014-11-04 Qualcomm Incorporated Methods and device for data alignment with time domain boundary
CN101491095B (zh) * 2006-03-30 2013-07-10 Lg电子株式会社 用于解码/编码视频信号的方法和装置
US20100091845A1 (en) 2006-03-30 2010-04-15 Byeong Moon Jeon Method and apparatus for decoding/encoding a video signal
KR100949975B1 (ko) * 2006-03-30 2010-03-29 엘지전자 주식회사 비디오 신호를 디코딩/인코딩하기 위한 방법 및 장치
JP2008017042A (ja) * 2006-07-04 2008-01-24 Sony Corp 情報処理装置および方法、並びにプログラム
WO2008023967A1 (en) 2006-08-25 2008-02-28 Lg Electronics Inc A method and apparatus for decoding/encoding a video signal
BRPI0809210A2 (pt) 2007-04-04 2014-09-02 Thomson Licensing Gerenciamento de lista de imagens de referência
JP5303556B2 (ja) * 2007-08-06 2013-10-02 トムソン ライセンシング 複数のインタービュー参照ピクチャを用いたモーションスキップモードのための方法及び装置
US8855199B2 (en) * 2008-04-21 2014-10-07 Nokia Corporation Method and device for video coding and decoding
TWI387347B (zh) * 2009-02-18 2013-02-21 Novatek Microelectronics Corp 圖像解碼器,參考圖資訊溝通介面以及參考圖控制方法
CN101547368B (zh) * 2009-04-24 2011-03-09 炬力集成电路设计有限公司 一种图像中参考帧的处理装置、方法以及解码器
EP2432226B1 (en) * 2009-05-11 2019-06-26 NTT DoCoMo, Inc. Moving image encoding device, method, and program, and moving image decoding device, method, and program
US20100296579A1 (en) 2009-05-22 2010-11-25 Qualcomm Incorporated Adaptive picture type decision for video coding
TW201116067A (en) * 2009-10-27 2011-05-01 Hon Hai Prec Ind Co Ltd Video codec method, video encode device and video decode device
TW201121331A (en) * 2009-12-10 2011-06-16 Novatek Microelectronics Corp Picture decoder
CA2784515A1 (en) 2009-12-17 2011-06-23 Telefonaktiebolaget L M Ericsson (Publ) Method and arrangement for video coding
CN105812827B (zh) * 2010-07-21 2019-04-16 杜比实验室特许公司 用于多层帧兼容视频传输的解码方法
WO2012052968A1 (en) * 2010-10-20 2012-04-26 Nokia Corporation Method and device for video coding and decoding
US9066102B2 (en) 2010-11-17 2015-06-23 Qualcomm Incorporated Reference picture list construction for generalized P/B frames in video coding
US9008176B2 (en) 2011-01-22 2015-04-14 Qualcomm Incorporated Combined reference picture list construction for video coding
WO2012124961A2 (ko) 2011-03-11 2012-09-20 삼성전자 주식회사 영상의 부호화 방법 및 장치, 그 복호화 방법 및 장치
AU2012311021B2 (en) 2011-09-19 2016-07-14 Sun Patent Trust Image coding method, image decoding method, image coding apparatus, image decoding apparatus, and image coding and decoding apparatus
US9451284B2 (en) * 2011-10-10 2016-09-20 Qualcomm Incorporated Efficient signaling of reference picture sets
US20130094774A1 (en) * 2011-10-13 2013-04-18 Sharp Laboratories Of America, Inc. Tracking a reference picture based on a designated picture on an electronic device
EP3742735B1 (en) 2011-10-19 2022-07-06 Sun Patent Trust Image decoding method and image decoding apparatus
WO2013109460A1 (en) * 2012-01-19 2013-07-25 Vid Scale, Inc. Method and apparatus for signaling and construction of video coding reference picture lists

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2012122176A1 (en) * 2011-03-07 2012-09-13 Qualcomm Incorporated Decoded picture buffer management

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WO2013109460A1 (en) 2013-07-25
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US20200336737A1 (en) 2020-10-22
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EP3383042A1 (en) 2018-10-03
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EP3624447A1 (en) 2020-03-18
EP3383042B1 (en) 2019-11-27
PL3917140T3 (pl) 2023-12-04
US20160381361A1 (en) 2016-12-29
CN104170390A (zh) 2014-11-26
AU2017202286A1 (en) 2017-04-27
TW202031050A (zh) 2020-08-16
CN104170390B (zh) 2018-05-08
KR102559468B1 (ko) 2023-07-24
EP2805512A1 (en) 2014-11-26
PL3624447T3 (pl) 2021-11-22
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US20250150577A1 (en) 2025-05-08
ES2689045T3 (es) 2018-11-08
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US11490074B2 (en) 2022-11-01
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US10771780B2 (en) 2020-09-08
CN108462881A (zh) 2018-08-28
KR20220146715A (ko) 2022-11-01
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KR102367618B1 (ko) 2022-02-28
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