BR112022001015A2 - Conversão de função de transferência eletro-óptica e legalização de sinal - Google Patents

Conversão de função de transferência eletro-óptica e legalização de sinal

Info

Publication number
BR112022001015A2
BR112022001015A2 BR112022001015A BR112022001015A BR112022001015A2 BR 112022001015 A2 BR112022001015 A2 BR 112022001015A2 BR 112022001015 A BR112022001015 A BR 112022001015A BR 112022001015 A BR112022001015 A BR 112022001015A BR 112022001015 A2 BR112022001015 A2 BR 112022001015A2
Authority
BR
Brazil
Prior art keywords
pixels
electro
optical transfer
transfer function
sample
Prior art date
Application number
BR112022001015A
Other languages
English (en)
Inventor
Guan-Ming Su
Harshad Kadu
J Gadgil Neeraj
Qing Song
Yung Lee Yoon
Original Assignee
Dolby Laboratories Licensing Corp
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 Dolby Laboratories Licensing Corp filed Critical Dolby Laboratories Licensing Corp
Publication of BR112022001015A2 publication Critical patent/BR112022001015A2/pt

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/60—Noise processing, e.g. detecting, correcting, reducing or removing noise
    • H04N25/61—Noise processing, e.g. detecting, correcting, reducing or removing noise the noise originating only from the lens unit, e.g. flare, shading, vignetting or "cos4"
    • H04N25/615—Noise processing, e.g. detecting, correcting, reducing or removing noise the noise originating only from the lens unit, e.g. flare, shading, vignetting or "cos4" involving a transfer function modelling the optical system, e.g. optical transfer function [OTF], phase transfer function [PhTF] or modulation transfer function [MTF]
    • H04N25/6153—Noise processing, e.g. detecting, correcting, reducing or removing noise the noise originating only from the lens unit, e.g. flare, shading, vignetting or "cos4" involving a transfer function modelling the optical system, e.g. optical transfer function [OTF], phase transfer function [PhTF] or modulation transfer function [MTF] for colour signals
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/90—Dynamic range modification of images or parts thereof
    • G06T5/92—Dynamic range modification of images or parts thereof based on global image properties
    • 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
    • H04N19/154—Measured or subjectively estimated visual quality after decoding, e.g. measurement of distortion
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/40—Image enhancement or restoration using histogram techniques
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T5/00—Image enhancement or restoration
    • G06T5/50—Image enhancement or restoration using two or more images, e.g. averaging or subtraction
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/90—Determination of colour characteristics
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N1/00—Scanning, transmission or reproduction of documents or the like, e.g. facsimile transmission; Details thereof
    • H04N1/46—Colour picture communication systems
    • H04N1/56—Processing of colour picture signals
    • H04N1/60—Colour correction or control
    • 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
    • H04N19/186—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 colour or a chrominance component
    • 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
    • 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
    • H04N19/85—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
    • H04N19/90—Methods 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
    • H04N19/98—Adaptive-dynamic-range coding [ADRC]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10016—Video; Image sequence
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T2207/00—Indexing scheme for image analysis or image enhancement
    • G06T2207/10—Image acquisition modality
    • G06T2207/10024—Color image

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Image Processing (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Liquid Crystal Display Device Control (AREA)

Abstract

conversão de função de transferência eletro-óptica e legalização de sinal. um dispositivo inclui um processador eletrônico configurado para definir um primeiro conjunto de pixels de amostra a partir de um conjunto de pixels de amostra determinado a partir dos dados de vídeo recebidos de acordo com uma primeira função de transferência eletro-óptica (eotf) em uma primeira representação das cores de um primeiro espaço de cores; converter o primeiro conjunto de pixels de amostra para uma segunda eotf através de uma função de mapeamento, produzir um segundo conjunto de pixels de amostra de acordo com a segunda eotf; converter o primeiro e segundo conjuntos de pixels de amostra a partir da primeira representação das cores para uma segunda representação das cores do primeiro espaço de cores; determinar uma função de remodelação inversa aplicando-se e ajustando-se de modo repetido uma função de remodelação inversa de amostra de modo a minimizar uma diferença entre valores de pixel previstos obtidos aplicando-se a função de remodelação inversa de função para os pixels do primeiro conjunto convertido e os pixels do segundo conjunto convertido.
BR112022001015A 2019-07-30 2020-07-27 Conversão de função de transferência eletro-óptica e legalização de sinal BR112022001015A2 (pt)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US201962880266P 2019-07-30 2019-07-30
EP19189052 2019-07-30
PCT/US2020/043789 WO2021021762A1 (en) 2019-07-30 2020-07-27 Electro-optical transfer function conversion and signal legalization

Publications (1)

Publication Number Publication Date
BR112022001015A2 true BR112022001015A2 (pt) 2022-04-05

Family

ID=71950842

Family Applications (1)

Application Number Title Priority Date Filing Date
BR112022001015A BR112022001015A2 (pt) 2019-07-30 2020-07-27 Conversão de função de transferência eletro-óptica e legalização de sinal

Country Status (6)

Country Link
US (1) US11895416B2 (pt)
EP (1) EP4005208A1 (pt)
JP (1) JP2022542312A (pt)
CN (1) CN114175647A (pt)
BR (1) BR112022001015A2 (pt)
WO (1) WO2021021762A1 (pt)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN117426091B (zh) * 2021-06-08 2024-05-28 杜比实验室特许公司 用于生成或渲染图像的方法以及计算装置

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US8437053B2 (en) * 2010-04-15 2013-05-07 Eastman Kodak Company Gamut mapping using hue-preserving color space
US9161041B2 (en) * 2011-01-09 2015-10-13 Mediatek Inc. Apparatus and method of efficient sample adaptive offset
PL2782348T3 (pl) 2011-04-14 2018-04-30 Dolby Laboratories Licensing Corp Zmienna objaśniająca regresji wielorakiej kanału wielu barw
US9275445B2 (en) * 2013-08-26 2016-03-01 Disney Enterprises, Inc. High dynamic range and tone mapping imaging techniques
US9584701B2 (en) * 2014-01-06 2017-02-28 Panamorph, Inc. Image processing system and method
US9936199B2 (en) * 2014-09-26 2018-04-03 Dolby Laboratories Licensing Corporation Encoding and decoding perceptually-quantized video content
US9747673B2 (en) * 2014-11-05 2017-08-29 Dolby Laboratories Licensing Corporation Systems and methods for rectifying image artifacts
WO2016172091A1 (en) * 2015-04-22 2016-10-27 Dolby Laboratories Licensing Corporation Signal reshaping and coding in the ipt-pq color space
JP6731722B2 (ja) * 2015-05-12 2020-07-29 パナソニック インテレクチュアル プロパティ コーポレーション オブ アメリカＰａｎａｓｏｎｉｃ Ｉｎｔｅｌｌｅｃｔｕａｌ Ｐｒｏｐｅｒｔｙ Ｃｏｒｐｏｒａｔｉｏｎ ｏｆ Ａｍｅｒｉｃａ 表示方法および表示装置
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GB201611253D0 (en) * 2016-06-29 2016-08-10 Dolby Laboratories Licensing Corp Efficient Histogram-based luma look matching
US10368099B2 (en) * 2016-08-09 2019-07-30 Qualcomm Incorporated Color remapping information SEI message signaling for display adaptation
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US10757428B2 (en) * 2018-10-10 2020-08-25 Apple Inc. Luma and chroma reshaping of HDR video encoding

Also Published As

Publication number Publication date
JP2022542312A (ja) 2022-09-30
US11895416B2 (en) 2024-02-06
EP4005208A1 (en) 2022-06-01
CN114175647A (zh) 2022-03-11
WO2021021762A1 (en) 2021-02-04
US20220295020A1 (en) 2022-09-15

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