MX2022013191A - Optimización iterativa de funciones de remodelación en códec de imágenes hdr de una sola capa. - Google Patents

Optimización iterativa de funciones de remodelación en códec de imágenes hdr de una sola capa.

Info

Publication number
MX2022013191A
MX2022013191A MX2022013191A MX2022013191A MX2022013191A MX 2022013191 A MX2022013191 A MX 2022013191A MX 2022013191 A MX2022013191 A MX 2022013191A MX 2022013191 A MX2022013191 A MX 2022013191A MX 2022013191 A MX2022013191 A MX 2022013191A
Authority
MX
Mexico
Prior art keywords
image
input
hdr image
sdr
hdr
Prior art date
Application number
MX2022013191A
Other languages
English (en)
Inventor
Guan- Ming Su
Harshad Kadu
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 MX2022013191A publication Critical patent/MX2022013191A/es

Links

Classifications

    • 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
    • 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
    • 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
    • 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
    • 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
    • H04N19/50—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
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/70—Circuitry for compensating brightness variation in the scene
    • H04N23/741—Circuitry for compensating brightness variation in the scene by increasing the dynamic range of the image compared to the dynamic range of the electronic image sensors
    • 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
    • G06T2207/20—Special algorithmic details
    • G06T2207/20172—Image enhancement details
    • G06T2207/20208—High dynamic range [HDR] image processing

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Compression Or Coding Systems Of Tv Signals (AREA)
  • Image Processing (AREA)
  • Television Signal Processing For Recording (AREA)
  • Closed-Circuit Television Systems (AREA)

Abstract

Un método para generar (a) una función de reformación directa para comprimir una imagen de alto rango dinámico (HDR) de entrada en una imagen de rango dinámico estándar (SDR) reformada y (b) una función de reformación inversa para descomprimir la imagen SDR reformada en una imagen HDR reconstruida, incluye (i) optimizar la función de reformación directa para minimizar una desviación entre la imagen SDR reformada y una imagen SDR de entrada correspondiente a la imagen HDR de entrada, (ii) optimizar la función de reformación inversa para minimizar una desviación entre la imagen HDR reconstruida y la imagen HDR de entrada, y (iii) hasta que se cumpla una condición de terminación, aplicar una corrección a la imagen SDR de entrada y reiterar, con base en la imagen SDR de entrada como corregida, los pasos para optimizar las funciones de reformación directa e inversa.
MX2022013191A 2020-04-22 2021-04-21 Optimización iterativa de funciones de remodelación en códec de imágenes hdr de una sola capa. MX2022013191A (es)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US202063013807P 2020-04-22 2020-04-22
EP20170837 2020-04-22
PCT/US2021/028475 WO2021216767A1 (en) 2020-04-22 2021-04-21 Iterative optimization of reshaping functions in single-layer hdr image codec

Publications (1)

Publication Number Publication Date
MX2022013191A true MX2022013191A (es) 2023-01-05

Family

ID=75728908

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2022013191A MX2022013191A (es) 2020-04-22 2021-04-21 Optimización iterativa de funciones de remodelación en códec de imágenes hdr de una sola capa.

Country Status (8)

Country Link
US (1) US20230164366A1 (es)
EP (1) EP4139884B1 (es)
JP (1) JP7298033B2 (es)
KR (1) KR102551197B1 (es)
CN (1) CN115699077A (es)
BR (1) BR112022021363A2 (es)
MX (1) MX2022013191A (es)
WO (1) WO2021216767A1 (es)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023177873A2 (en) * 2022-03-18 2023-09-21 Dolby Laboratories Licensing Corporation Image optimization in mobile capture and editing applications
WO2023205548A1 (en) * 2022-04-21 2023-10-26 Dolby Laboratories Licensing Corporation Generating hdr image from corresponding camera raw and sdr images

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106488246B (zh) * 2013-06-17 2019-06-11 杜比实验室特许公司 用于增强动态范围信号的分层编码的自适应整形的方法
JP6374614B2 (ja) * 2015-03-20 2018-08-15 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 信号再整形近似
JP6320440B2 (ja) * 2015-08-04 2018-05-09 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 ハイダイナミックレンジ信号のための信号再構成
US10223774B2 (en) * 2016-02-02 2019-03-05 Dolby Laboratories Licensing Corporation Single-pass and multi-pass-based polynomial approximations for reshaping functions
CN108885783B (zh) * 2016-03-23 2022-02-15 杜比实验室特许公司 编码和解码可逆制作质量单层视频信号
GB201611253D0 (en) * 2016-06-29 2016-08-10 Dolby Laboratories Licensing Corp Efficient Histogram-based luma look matching
EP3510772B1 (en) * 2016-09-09 2020-12-09 Dolby Laboratories Licensing Corporation Coding of high dynamic range video using segment-based reshaping

Also Published As

Publication number Publication date
JP2023515268A (ja) 2023-04-12
JP7298033B2 (ja) 2023-06-26
KR102551197B1 (ko) 2023-07-05
WO2021216767A1 (en) 2021-10-28
US20230164366A1 (en) 2023-05-25
BR112022021363A2 (pt) 2022-12-06
CN115699077A (zh) 2023-02-03
KR20220159489A (ko) 2022-12-02
EP4139884B1 (en) 2024-02-21
EP4139884A1 (en) 2023-03-01

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