CN104685879A - 针对编码标准可扩展性的层间参考图片处理 - Google Patents

针对编码标准可扩展性的层间参考图片处理 Download PDF

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Publication number
CN104685879A
CN104685879A CN201380050522.6A CN201380050522A CN104685879A CN 104685879 A CN104685879 A CN 104685879A CN 201380050522 A CN201380050522 A CN 201380050522A CN 104685879 A CN104685879 A CN 104685879A
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rpu
signal
coding
encoded
layer
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尹鹏
T·鲁
陈涛
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Dolby Laboratories Licensing Corp
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    • 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
    • H04N19/187—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 scalable video layer
    • 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
    • H04N19/12—Selection from among a plurality of transforms or standards, e.g. selection between discrete cosine transform [DCT] and sub-band transform or selection between H.263 and H.264
    • 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
    • H04N19/30—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
    • H04N19/33—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability in the spatial domain
    • 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
    • H04N19/40—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
    • 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
    • H04N19/59—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using predictive coding involving spatial sub-sampling or interpolation, e.g. alteration of picture size or resolution
    • 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
    • H04N19/85—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using pre-processing or post-processing specially adapted for video compression
    • 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
    • H04N19/70—Methods or arrangements for coding, decoding, compressing or decompressing digital video signals characterised by syntax aspects related to video coding, e.g. related to compression standards

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Discrete Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)
CN201380050522.6A 2012-09-27 2013-09-24 针对编码标准可扩展性的层间参考图片处理 Pending CN104685879A (zh)

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US201261706480P 2012-09-27 2012-09-27
US61/706,480 2012-09-27
PCT/US2013/061352 WO2014052292A1 (en) 2012-09-27 2013-09-24 Inter-layer reference picture processing for coding standard scalability

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EP (3) EP3255890B1 (https=)
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KR (1) KR101806101B1 (https=)
CN (2) CN104685879A (https=)
AU (1) AU2013323836B2 (https=)
BR (1) BR112015006551B1 (https=)
CA (1) CA2884500C (https=)
HK (1) HK1205838A1 (https=)
IL (1) IL237562A (https=)
IN (1) IN2015DN02130A (https=)
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MY (2) MY201898A (https=)
RU (1) RU2595966C1 (https=)
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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111869206A (zh) * 2018-01-19 2020-10-30 威诺瓦国际有限公司 多编解码器处理和速率控制
CN114982229A (zh) * 2019-09-24 2022-08-30 弗劳恩霍夫应用研究促进协会 用于参考图片重采样扩展的编码器和解码器、编码方法和解码方法
WO2023193629A1 (zh) * 2022-04-08 2023-10-12 华为技术有限公司 区域增强层的编解码方法和装置
CN119788885A (zh) * 2022-07-14 2025-04-08 杭州海康威视数字技术股份有限公司 一种基于神经网络的图像解码、编码方法、装置及其设备

Families Citing this family (38)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014000168A1 (en) * 2012-06-27 2014-01-03 Intel Corporation Cross-layer cross-channel residual prediction
CA2878807C (en) * 2012-07-09 2018-06-12 Vid Scale, Inc. Codec architecture for multiple layer video coding
CN104704831B (zh) * 2012-08-06 2019-01-04 Vid拓展公司 多层视频编码中用于空间层的采样栅格信息
EP2904804A1 (en) * 2012-10-04 2015-08-12 VID SCALE, Inc. Reference picture set mapping for standard scalable video coding
KR20150090025A (ko) * 2012-11-27 2015-08-05 엘지전자 주식회사 신호 송수신 장치 및 신호 송수신 방법
US9674522B2 (en) * 2013-04-08 2017-06-06 Qualcomm Incorporated Device and method for scalable coding of video information
US10284858B2 (en) * 2013-10-15 2019-05-07 Qualcomm Incorporated Support of multi-mode extraction for multi-layer video codecs
WO2015103032A1 (en) * 2014-01-02 2015-07-09 Vid Scale, Inc. Methods and systems for scalable video coding with mixed interlace and progressive content
US10547834B2 (en) * 2014-01-08 2020-01-28 Qualcomm Incorporated Support of non-HEVC base layer in HEVC multi-layer extensions
US9641851B2 (en) * 2014-04-18 2017-05-02 Qualcomm Incorporated Conformance window information in multi-layer coding
US9819945B2 (en) * 2014-06-25 2017-11-14 Qualcomm Incorporated Multi-layer video coding
EP3010231A1 (en) 2014-10-17 2016-04-20 Thomson Licensing Method for color mapping a video signal based on color mapping data and method of encoding a video signal and color mapping data and corresponding devices
US20160234522A1 (en) * 2015-02-05 2016-08-11 Microsoft Technology Licensing, Llc Video Decoding
EP3329676B1 (en) 2015-07-28 2020-07-29 Dolby Laboratories Licensing Corporation Sdr bit depth enhancement via codeword range amplification in a codec with inverse display management
US11405611B2 (en) 2016-02-15 2022-08-02 Qualcomm Incorporated Predicting filter coefficients from fixed filters for video coding
US10440401B2 (en) 2016-04-07 2019-10-08 Dolby Laboratories Licensing Corporation Backward-compatible HDR codecs with temporal scalability
US10178394B2 (en) * 2016-06-10 2019-01-08 Apple Inc. Transcoding techniques for alternate displays
US10999602B2 (en) 2016-12-23 2021-05-04 Apple Inc. Sphere projected motion estimation/compensation and mode decision
US10506230B2 (en) * 2017-01-04 2019-12-10 Qualcomm Incorporated Modified adaptive loop filter temporal prediction for temporal scalability support
US11259046B2 (en) 2017-02-15 2022-02-22 Apple Inc. Processing of equirectangular object data to compensate for distortion by spherical projections
US10924747B2 (en) 2017-02-27 2021-02-16 Apple Inc. Video coding techniques for multi-view video
US11093752B2 (en) 2017-06-02 2021-08-17 Apple Inc. Object tracking in multi-view video
US10754242B2 (en) 2017-06-30 2020-08-25 Apple Inc. Adaptive resolution and projection format in multi-direction video
US11284075B2 (en) * 2018-09-12 2022-03-22 Qualcomm Incorporated Prediction of adaptive loop filter parameters with reduced memory consumption for video coding
CN111886864A (zh) * 2019-03-01 2020-11-03 阿里巴巴集团控股有限公司 分辨率自适应视频编码
GB2617304B (en) 2019-03-20 2024-04-03 V Nova Int Ltd Residual filtering in signal enhancement coding
US11336894B2 (en) 2019-09-20 2022-05-17 Tencent America LLC Signaling of reference picture resampling with resampling picture size indication in video bitstream
US11140402B2 (en) * 2019-09-20 2021-10-05 Tencent America LLC Signaling of reference picture resampling with constant window size indication in video bitstream
CN114902674B (zh) 2019-12-26 2025-07-15 字节跳动有限公司 视频编解码中的档次、层和层级指示
WO2021134018A1 (en) 2019-12-26 2021-07-01 Bytedance Inc. Signaling of decoded picture buffer parameters in layered video
EP4066387A4 (en) 2019-12-27 2023-02-15 ByteDance Inc. SUBPICTURE SIGNALING IN PARAMETER SETS
WO2021142370A1 (en) 2020-01-09 2021-07-15 Bytedance Inc. Constraints on value ranges in video bitstreams
RU2742871C1 (ru) * 2020-02-19 2021-02-11 Федеральное государственное казенное военное образовательное учреждение высшего образования "Военный учебно-научный центр Военно-воздушных сил "Военно-воздушная академия имени профессора Н.Е. Жуковского и Ю.А. Гагарина" (г. Воронеж) Министерства обороны Российской Федерации Способ двумерной дискретной фильтрации объектов заданного размера
US12058357B2 (en) 2020-03-31 2024-08-06 Tencent America LLC Method for signaling subpicture partitioning in coded video stream
KR20230144050A (ko) * 2021-03-18 2023-10-13 베이징 다지아 인터넷 인포메이션 테크놀로지 컴퍼니 리미티드 교차-성분 샘플 적응적 오프셋에서의 코딩 향상
CN112702604B (zh) * 2021-03-25 2021-06-29 北京达佳互联信息技术有限公司 用于分层视频的编码方法和装置以及解码方法和装置
KR20230151029A (ko) 2021-04-14 2023-10-31 베이징 다지아 인터넷 인포메이션 테크놀로지 컴퍼니 리미티드 교차 컴포넌트 샘플 적응적 오프셋에서의 코딩 향상
GB2619096B (en) * 2022-05-27 2025-09-24 V Nova Int Ltd Enhancement interlacing

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006109986A1 (en) * 2005-04-13 2006-10-19 Lg Electronics Inc. Method and apparatus for encoding/decoding video signal using reference pictures
US20070116131A1 (en) * 2005-11-18 2007-05-24 Sharp Laboratories Of America, Inc. Methods and systems for picture resampling
CN101385348A (zh) * 2006-01-09 2009-03-11 Lg电子株式会社 用于视频信号的层间预测方法

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005507590A (ja) * 2001-10-26 2005-03-17 コーニンクレッカ　フィリップス　エレクトロニクス　エヌ　ヴィ 空間拡張可能圧縮
KR20060109247A (ko) * 2005-04-13 2006-10-19 엘지전자 주식회사 베이스 레이어 픽처를 이용하는 영상신호의 엔코딩/디코딩방법 및 장치
ES2383893T3 (es) * 2003-04-28 2012-06-27 Panasonic Corporation Medio de grabación, aparato de reproducción, procedimiento de grabación, procedimiento de reproducción, programa, y circuito integrado para grabar/reproducir un flujo de video y gráficos con información de ventana en una pantalla gráfica
EP1692872A1 (en) * 2003-12-03 2006-08-23 Koninklijke Philips Electronics N.V. System and method for improved scalability support in mpeg-2 systems
US7961963B2 (en) * 2005-03-18 2011-06-14 Sharp Laboratories Of America, Inc. Methods and systems for extended spatial scalability with picture-level adaptation
US8457201B2 (en) * 2006-01-09 2013-06-04 Lg Electronics Inc. Inter-layer prediction method for video signal
CN100584026C (zh) * 2006-03-27 2010-01-20 华为技术有限公司 交织模式下的视频分层编码方法
CN101888555B (zh) * 2006-11-17 2013-04-03 Lg电子株式会社 用于解码/编码视频信号的方法及装置
JP2009538084A (ja) * 2006-11-17 2009-10-29 エルジー エレクトロニクス インコーポレイティド ビデオ信号のデコーディング／エンコーディング方法及び装置
CN104822062B (zh) * 2007-01-08 2018-11-30 诺基亚公司 用于视频编码中扩展空间可分级性的改进层间预测
US8155184B2 (en) * 2008-01-16 2012-04-10 Sony Corporation Video coding system using texture analysis and synthesis in a scalable coding framework
US9774882B2 (en) 2009-07-04 2017-09-26 Dolby Laboratories Licensing Corporation Encoding and decoding architectures for format compatible 3D video delivery
EP2478706A1 (en) * 2009-09-16 2012-07-25 Koninklijke Philips Electronics N.V. 3d screen size compensation
JP2011217272A (ja) * 2010-04-01 2011-10-27 Canon Inc 映像処理装置及びその制御方法
FR2966680A1 (fr) * 2010-10-25 2012-04-27 France Telecom Procedes et dispositifs de codage et de decodage d'au moins une image a partir d'un epitome hierarchique, signal et programme d'ordinateur correspondants
US20130016776A1 (en) * 2011-07-12 2013-01-17 Vidyo Inc. Scalable Video Coding Using Multiple Coding Technologies

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006109986A1 (en) * 2005-04-13 2006-10-19 Lg Electronics Inc. Method and apparatus for encoding/decoding video signal using reference pictures
US20070116131A1 (en) * 2005-11-18 2007-05-24 Sharp Laboratories Of America, Inc. Methods and systems for picture resampling
CN101385348A (zh) * 2006-01-09 2009-03-11 Lg电子株式会社 用于视频信号的层间预测方法

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
AJAY LUTHRA: "Draft Call for Proposals on the Scalable Video Coding Extensions of HEVC", 《ISO/IEC JTC1/SC29/WG11 M22559》 *
BENJAMIN BROSS ET AL: "High efficiency video coding (HEVC) text specification draft 6", 《JOINT COLLABORATIVE TEAM ON VIDEO CODING (JCT-VC) OF ITU-T SG16 WP3 AND ISO/IEC JTC1/SC29/WG11》 *
HISAO KUMAI ET AL: "Proposals for HEVC scalability Extension", 《ISO/IEC JTC1/SC29/WGLL MPEG2012/M25749》 *

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111869206A (zh) * 2018-01-19 2020-10-30 威诺瓦国际有限公司 多编解码器处理和速率控制
CN114982229A (zh) * 2019-09-24 2022-08-30 弗劳恩霍夫应用研究促进协会 用于参考图片重采样扩展的编码器和解码器、编码方法和解码方法
WO2023193629A1 (zh) * 2022-04-08 2023-10-12 华为技术有限公司 区域增强层的编解码方法和装置
CN119788885A (zh) * 2022-07-14 2025-04-08 杭州海康威视数字技术股份有限公司 一种基于神经网络的图像解码、编码方法、装置及其设备
CN119815080A (zh) * 2022-07-14 2025-04-11 杭州海康威视数字技术股份有限公司 一种基于神经网络的图像解码、编码方法、装置及其设备
CN119815080B (zh) * 2022-07-14 2025-12-26 杭州海康威视数字技术股份有限公司 一种基于神经网络的图像解码、编码方法、装置及其设备
CN119788885B (zh) * 2022-07-14 2025-12-26 杭州海康威视数字技术股份有限公司 一种基于神经网络的图像解码、编码方法、装置及其设备

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US20170264905A1 (en) 2017-09-14
UA111797C2 (uk) 2016-06-10
EP3255890A2 (en) 2017-12-13
EP2901689A1 (en) 2015-08-05
MX2015003865A (es) 2015-07-17
CA2884500C (en) 2017-09-05
CN110460846B (zh) 2021-12-31
AU2013323836A1 (en) 2015-03-19
BR112015006551A2 (pt) 2017-07-04
IL237562A (en) 2017-12-31
EP3255890A3 (en) 2018-02-28
US20150326865A1 (en) 2015-11-12
TW201419871A (zh) 2014-05-16
KR20150060736A (ko) 2015-06-03
SG11201502435XA (en) 2015-05-28
HK1205838A1 (en) 2015-12-24
TWI581613B (zh) 2017-05-01
IN2015DN02130A (https=) 2015-08-14
CN110460846A (zh) 2019-11-15
WO2014052292A1 (en) 2014-04-03
AU2013323836B2 (en) 2017-12-07
US20160286225A1 (en) 2016-09-29
JP2015537409A (ja) 2015-12-24
CA2884500A1 (en) 2014-04-03
MY201898A (en) 2024-03-22
EP3255890B1 (en) 2020-08-19
IL237562A0 (en) 2015-04-30
EP3748969A1 (en) 2020-12-09
EP3748969B1 (en) 2024-01-03
BR112015006551B1 (pt) 2022-12-06
MY172388A (en) 2019-11-22
MX346164B (es) 2017-03-08
RU2595966C1 (ru) 2016-08-27
JP6152421B2 (ja) 2017-06-21
KR101806101B1 (ko) 2017-12-07

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