CA2975172C - A method and apparatus of encoding and decoding a color picture - Google Patents

A method and apparatus of encoding and decoding a color picture Download PDF

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Publication number
CA2975172C
CA2975172C CA2975172A CA2975172A CA2975172C CA 2975172 C CA2975172 C CA 2975172C CA 2975172 A CA2975172 A CA 2975172A CA 2975172 A CA2975172 A CA 2975172A CA 2975172 C CA2975172 C CA 2975172C
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Prior art keywords
component
luminance
luminance component
chrominance components
obtaining
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CA2975172A
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English (en)
French (fr)
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CA2975172A1 (en
Inventor
Sebastien Lasserre
Pierre Andrivon
Fabrice Leleannec
David Touze
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InterDigital VC Holdings Inc
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InterDigital VC Holdings Inc
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Priority claimed from EP15305125.5A external-priority patent/EP3051489A1/en
Application filed by InterDigital VC Holdings Inc filed Critical InterDigital VC Holdings Inc
Publication of CA2975172A1 publication Critical patent/CA2975172A1/en
Application granted granted Critical
Publication of CA2975172C publication Critical patent/CA2975172C/en
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    • 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
    • H04N19/186Methods 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 colour or a chrominance component
    • GPHYSICS
    • G06COMPUTING OR CALCULATING; COUNTING
    • G06TIMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00Image enhancement or restoration
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G5/00Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
    • G09G5/02Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the way in which colour is displayed
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • 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
    • H04N19/117Filters, e.g. for pre-processing or post-processing
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/30Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/30Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using hierarchical techniques, e.g. scalability
    • H04N19/36Scalability techniques involving formatting the layers as a function of picture distortion after decoding, e.g. signal-to-noise [SNR] scalability
    • 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
    • H04N19/80Details of filtering operations specially adapted for video compression, e.g. for pixel interpolation
    • 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
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N19/00Methods or arrangements for coding, decoding, compressing or decompressing digital video signals
    • H04N19/90Methods or arrangements for coding, decoding, compressing or decompressing digital video signals using coding techniques not provided for in groups H04N19/10-H04N19/85, e.g. fractals
    • H04N19/98Adaptive-dynamic-range coding [ADRC]
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04NPICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/50Control of the SSIS exposure
    • H04N25/57Control of the dynamic range
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2320/00Control of display operating conditions
    • G09G2320/02Improving the quality of display appearance
    • G09G2320/0271Adjustment of the gradation levels within the range of the gradation scale, e.g. by redistribution or clipping
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00Aspects of display data processing
    • G09G2340/04Changes in size, position or resolution of an image
    • G09G2340/0407Resolution change, inclusive of the use of different resolutions for different screen areas
    • G09G2340/0428Gradation resolution change
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2340/00Aspects of display data processing
    • G09G2340/06Colour space transformation
    • GPHYSICS
    • G09EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
    • G09GARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
    • G09G2360/00Aspects of the architecture of display systems
    • G09G2360/16Calculation or use of calculated indices related to luminance levels in display data

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Color Television Systems (AREA)
  • Image Processing (AREA)
  • Processing Of Color Television Signals (AREA)
CA2975172A 2015-01-30 2016-01-25 A method and apparatus of encoding and decoding a color picture Active CA2975172C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP15305125.5A EP3051489A1 (en) 2015-01-30 2015-01-30 A method and apparatus of encoding and decoding a color picture
EP15305125.5 2015-01-30
EP15306607 2015-10-09
EP15306607.1 2015-10-09
PCT/EP2016/051449 WO2016120209A1 (en) 2015-01-30 2016-01-25 A method and apparatus of encoding and decoding a color picture

Publications (2)

Publication Number Publication Date
CA2975172A1 CA2975172A1 (en) 2016-08-04
CA2975172C true CA2975172C (en) 2023-04-04

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CA2975172A Active CA2975172C (en) 2015-01-30 2016-01-25 A method and apparatus of encoding and decoding a color picture

Country Status (11)

Country Link
US (2) US10390027B2 (enExample)
EP (2) EP3251084B1 (enExample)
JP (2) JP6937695B2 (enExample)
KR (1) KR102529013B1 (enExample)
CN (2) CN107211130B (enExample)
AU (2) AU2016212243B2 (enExample)
CA (1) CA2975172C (enExample)
MX (2) MX393752B (enExample)
MY (1) MY186061A (enExample)
RU (1) RU2710888C2 (enExample)
WO (1) WO2016120209A1 (enExample)

Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6937695B2 (ja) 2015-01-30 2021-09-22 インターデジタル ヴイシー ホールディングス, インコーポレイテッド カラー・ピクチャを符号化および復号する方法および装置
RU2679239C1 (ru) 2015-02-13 2019-02-06 Телефонактиеболагет Лм Эрикссон (Пабл) Предобработка и кодирование пикселей
US20160309154A1 (en) * 2015-04-17 2016-10-20 Qualcomm Incorporated Dynamic range adjustment for high dynamic range and wide color gamut video coding
US10257526B2 (en) * 2015-05-01 2019-04-09 Disney Enterprises, Inc. Perceptual color transformations for wide color gamut video coding
EP3113496A1 (en) 2015-06-30 2017-01-04 Thomson Licensing Method and device for encoding both a hdr picture and a sdr picture obtained from said hdr picture using color mapping functions
US10721484B2 (en) 2015-09-18 2020-07-21 Interdigital Vc Holdings, Inc. Determination of a co-located luminance sample of a color component sample, for HDR coding/decoding
EP3453175B1 (en) 2016-05-04 2022-03-02 InterDigital VC Holdings, Inc. Method and apparatus for encoding/decoding a high dynamic range picture into a coded bistream
US10462334B2 (en) * 2016-11-04 2019-10-29 Disney Enterprises, Inc. Pipeline for high dynamic range video coding based on luminance independent chromaticity preprocessing
EP3367658A1 (en) 2017-02-24 2018-08-29 Thomson Licensing Method and device for reconstructing an hdr image
EP3367659A1 (en) * 2017-02-28 2018-08-29 Thomson Licensing Hue changing color gamut mapping
US10542187B2 (en) 2017-03-01 2020-01-21 Canon Kabushiki Kaisha Image processing apparatus and image processing method
JP6659178B2 (ja) * 2017-03-01 2020-03-04 キヤノン株式会社 画像処理装置および画像処理方法
US10778978B2 (en) * 2017-08-21 2020-09-15 Qualcomm Incorporated System and method of cross-component dynamic range adjustment (CC-DRA) in video coding
IT201800000555A1 (it) * 2018-01-04 2019-07-04 St Microelectronics Srl Architettura di decodifica di riga per un dispositivo di memoria non volatile a cambiamento di fase e relativo metodo di decodifica di riga
CN110691227B (zh) * 2018-07-05 2024-04-09 华为技术有限公司 一种视频信号处理方法及装置
KR102824011B1 (ko) 2018-09-21 2025-06-20 후아웨이 테크놀러지 컴퍼니 리미티드 역 양자화 장치 및 방법
CN113678450B (zh) * 2019-03-12 2024-09-13 弗劳恩霍夫应用研究促进协会 用于图像和视频编码的选择性分量间变换(ict)
CN113812161B (zh) * 2019-05-14 2024-02-06 北京字节跳动网络技术有限公司 视频编解码中的缩放方法
WO2021052493A1 (en) 2019-09-20 2021-03-25 Beijing Bytedance Network Technology Co., Ltd. Scaling process for coding block
EP4229869A1 (en) * 2020-10-14 2023-08-23 Dolby Laboratories Licensing Corporation Color transformation for hdr video with a coding-efficiency constraint

Family Cites Families (52)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3134784B2 (ja) * 1996-08-05 2001-02-13 松下電器産業株式会社 画像合成回路
JP4040171B2 (ja) * 1998-04-24 2008-01-30 キヤノン株式会社 信号処理装置
US8698840B2 (en) * 1999-03-05 2014-04-15 Csr Technology Inc. Method and apparatus for processing video and graphics data to create a composite output image having independent and separate layers of video and graphics display planes
JP4003399B2 (ja) 2000-10-23 2007-11-07 ソニー株式会社 画像処理装置および方法、並びに記録媒体
US6980598B2 (en) * 2002-02-22 2005-12-27 International Business Machines Corporation Programmable vertical filter for video encoding
US7106352B2 (en) * 2003-03-03 2006-09-12 Sun Microsystems, Inc. Automatic gain control, brightness compression, and super-intensity samples
KR20060119969A (ko) * 2003-09-12 2006-11-24 코닌클리케 필립스 일렉트로닉스 엔.브이. 휘도를 제어하기 위한 휘도 제어 방법 및 휘도 제어 장치,컴퓨터 프로그램 및 컴퓨팅 시스템
US6975767B1 (en) * 2004-02-02 2005-12-13 Adams Platform Pty Ltd. System and method for encoding and decoding video
JP2006276677A (ja) * 2005-03-30 2006-10-12 Toshiba Corp 表示装置と表示装置の駆動方法
US7352410B2 (en) * 2005-05-31 2008-04-01 Kolorific, Inc. Method and system for automatic brightness and contrast adjustment of a video source
CN101742306A (zh) 2006-01-23 2010-06-16 马普科技促进协会 高动态范围编解码器
US8014445B2 (en) 2006-02-24 2011-09-06 Sharp Laboratories Of America, Inc. Methods and systems for high dynamic range video coding
US7558436B2 (en) 2006-07-20 2009-07-07 Max-Viz, Inc. Image dynamic range control for visual display
KR101555183B1 (ko) 2006-10-12 2015-10-06 티피 비전 홀딩 비.브이. 칼러 맵핑 방법
US8237865B2 (en) * 2006-12-18 2012-08-07 Emanuele Salvucci Multi-compatible low and high dynamic range and high bit-depth texture and video encoding system
US7826673B2 (en) * 2007-01-23 2010-11-02 Sharp Laboratories Of America, Inc. Methods and systems for inter-layer image prediction with color-conversion
US8207931B2 (en) * 2007-05-31 2012-06-26 Hong Kong Applied Science and Technology Research Institute Company Limited Method of displaying a low dynamic range image in a high dynamic range
US8411206B2 (en) * 2007-12-27 2013-04-02 Texas Instruments Incorporated Apparatus and method for decoding extended color space data
KR101539379B1 (ko) 2008-12-31 2015-07-29 주식회사 동부하이텍 실시간 영상 발생기
KR101007101B1 (ko) * 2009-01-07 2011-01-10 한양대학교 산학협력단 적응형 톤 매핑 장치 및 방법, 그리고 이를 이용한 영상 처리 시스템
KR101256030B1 (ko) * 2009-03-10 2013-04-23 돌비 레버러토리즈 라이쎈싱 코오포레이션 확장된 동적 범위 및 확장된 차수 이미지 신호 변환
EP2406959B1 (en) * 2009-03-13 2015-01-14 Dolby Laboratories Licensing Corporation Layered compression of high dynamic range, visual dynamic range, and wide color gamut video
US8942282B2 (en) * 2010-04-12 2015-01-27 Qualcomm Incorporated Variable length coding of coded block pattern (CBP) in video compression
WO2012004709A1 (en) 2010-07-06 2012-01-12 Koninklijke Philips Electronics N.V. Generation of high dynamic range images from low dynamic range images
TWI479898B (zh) * 2010-08-25 2015-04-01 Dolby Lab Licensing Corp 擴展影像動態範圍
WO2012122426A1 (en) 2011-03-10 2012-09-13 Dolby Laboratories Licensing Corporation Reference processing for bitdepth and color format scalable video coding
CN103493489B (zh) 2011-04-14 2016-10-19 杜比实验室特许公司 基于原色分级模型的图像预测
TWI624182B (zh) 2011-04-15 2018-05-11 杜比實驗室特許公司 高動態範圍影像的編碼、解碼及表示
EP2702765A1 (en) 2011-04-28 2014-03-05 Koninklijke Philips N.V. Method and apparatus for generating an image coding signal
RU2616158C2 (ru) 2011-04-28 2017-04-12 Конинклейке Филипс Н.В. Устройства и способы для кодирования и декодирования hdr-изображений
RU2620571C2 (ru) * 2011-08-26 2017-05-26 Конинклейке Филипс Н.В. Обнаружение сигнала с уменьшенным искажением
PL4421797T3 (pl) 2011-09-27 2025-09-01 Koninklijke Philips N.V. Urządzenie i sposób do przekształcenia zakresu dynamiki obrazów
EP2792145B1 (en) 2011-12-15 2018-03-21 Dolby Laboratories Licensing Corporation Backwards-compatible delivery of digital cinema content with extended dynamic range
TWI606718B (zh) 2012-01-03 2017-11-21 杜比實驗室特許公司 規定視覺動態範圍編碼操作及參數
US9438904B2 (en) * 2012-01-19 2016-09-06 Futurewei Technologies, Inc. Reduced look-up table for LM mode calculation
CN103379346A (zh) * 2012-04-23 2013-10-30 深圳市融创天下科技股份有限公司 一种yuv格式图像的色度信息处理方法、装置及系统
US9516351B2 (en) * 2012-07-13 2016-12-06 Koninklijke Philips N.V. HDR image encoding and decoding methods and devices
JP5911643B2 (ja) * 2012-10-08 2016-04-27 コーニンクレッカ フィリップス エヌ ヴェKoninklijke Philips N.V. 色制約付きの輝度変更画像処理
AU2012394396B2 (en) 2012-11-16 2019-01-17 Interdigital Vc Holdings, Inc. Processing high dynamic range images
CN104995903B (zh) 2013-02-21 2019-07-09 皇家飞利浦有限公司 改进的hdr图像编码和解码方法及设备
JP6038360B2 (ja) 2013-06-17 2016-12-07 ドルビー ラボラトリーズ ライセンシング コーポレイション エンハンストダイナミックレンジ信号の階層符号化のための適応的再構成
EP2819414A3 (en) 2013-06-28 2015-02-25 Samsung Electronics Co., Ltd Image processing device and image processing method
JP6351313B2 (ja) 2013-07-11 2018-07-04 キヤノン株式会社 画像符号化装置、画像復号装置、画像処理装置、並びにそれらの制御方法
CN106713697B (zh) 2013-10-22 2019-02-12 杜比实验室特许公司 用于扩展动态范围图像的引导颜色分级
EP2890129A1 (en) 2013-12-27 2015-07-01 Thomson Licensing Method and device for encoding a high-dynamic range image and/or decoding a bitstream
WO2015097118A1 (en) 2013-12-27 2015-07-02 Thomson Licensing Method and device for encoding a high-dynamic range image into a bitstream and/or decoding a bitstream representing a high-dynamic range image
EP2958327A1 (en) 2014-06-20 2015-12-23 Thomson Licensing Method and device for encoding a sequence of pictures
JP6937695B2 (ja) 2015-01-30 2021-09-22 インターデジタル ヴイシー ホールディングス, インコーポレイテッド カラー・ピクチャを符号化および復号する方法および装置
PT3394850T (pt) * 2015-12-21 2020-08-14 Koninklijke Philips Nv Otimização de imagens de alta gama dinâmica para monitores específicos
US10542296B2 (en) * 2016-05-10 2020-01-21 Dolby Laboratories Licensing Corporation Chroma reshaping of HDR video signals
US10462334B2 (en) * 2016-11-04 2019-10-29 Disney Enterprises, Inc. Pipeline for high dynamic range video coding based on luminance independent chromaticity preprocessing
US10681358B2 (en) * 2017-12-19 2020-06-09 Qualcomm Incorporated Quantization parameter control for video coding with joined pixel/transform based quantization

Also Published As

Publication number Publication date
CN111654697B (zh) 2022-07-19
EP4089627A2 (en) 2022-11-16
EP4089627A3 (en) 2022-12-28
AU2016212243B2 (en) 2020-11-26
US20190268610A1 (en) 2019-08-29
US11178412B2 (en) 2021-11-16
AU2016212243A1 (en) 2017-08-10
MX2017009748A (es) 2017-10-27
CN111654697A (zh) 2020-09-11
JP2021193806A (ja) 2021-12-23
CN107211130A (zh) 2017-09-26
MY186061A (en) 2021-06-17
RU2017130386A3 (enExample) 2019-07-17
KR102529013B1 (ko) 2023-05-08
CA2975172A1 (en) 2016-08-04
AU2021201048A1 (en) 2021-03-11
EP3251084B1 (en) 2022-05-18
WO2016120209A1 (en) 2016-08-04
RU2017130386A (ru) 2019-02-28
KR20170110087A (ko) 2017-10-10
US10390027B2 (en) 2019-08-20
JP7356478B2 (ja) 2023-10-04
CN107211130B (zh) 2020-07-24
MX2019013809A (es) 2020-01-15
MX393752B (es) 2025-03-24
MX371076B (es) 2019-11-20
JP6937695B2 (ja) 2021-09-22
JP2018507619A (ja) 2018-03-15
AU2021201048B2 (en) 2022-04-28
US20180007372A1 (en) 2018-01-04
EP3251084A1 (en) 2017-12-06
RU2710888C2 (ru) 2020-01-14
BR112017015790A2 (pt) 2018-03-27

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