FR3076386B1 - Methode de compression dynamique - Google Patents

Methode de compression dynamique Download PDF

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Publication number
FR3076386B1
FR3076386B1 FR1763357A FR1763357A FR3076386B1 FR 3076386 B1 FR3076386 B1 FR 3076386B1 FR 1763357 A FR1763357 A FR 1763357A FR 1763357 A FR1763357 A FR 1763357A FR 3076386 B1 FR3076386 B1 FR 3076386B1
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FR
France
Prior art keywords
minimum
luminances
maximum
images
transition effect
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
FR1763357A
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English (en)
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FR3076386A1 (fr
Inventor
Thomas Guionnet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ateme SA
Original Assignee
Ateme SA
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 Ateme SA filed Critical Ateme SA
Priority to FR1763357A priority Critical patent/FR3076386B1/fr
Priority to US16/958,935 priority patent/US11138703B2/en
Priority to EP18842803.1A priority patent/EP3732654A1/fr
Priority to PCT/FR2018/053522 priority patent/WO2019129981A1/fr
Publication of FR3076386A1 publication Critical patent/FR3076386A1/fr
Application granted granted Critical
Publication of FR3076386B1 publication Critical patent/FR3076386B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • G06T5/50—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
    • 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
    • G06T2207/20—Special algorithmic details
    • G06T2207/20004—Adaptive image processing
    • G06T2207/20008—Globally adaptive
    • 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

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Studio Circuits (AREA)
  • Picture Signal Circuits (AREA)

Abstract

L'invention concerne un procédé de traitement d'un flux vidéo comportant un ensemble d'images susceptibles de comprendre un effet de transition, le procédé comportant les étapes suivantes : détecter un effet de transition, de type fondu, au sein de l'ensemble d'images du flux vidéo, le cas échéant, calculer des luminances minimales et maximales LMIN et LMAX pour chaque image de l'ensemble d'images comprenant le fondu ; estimer des luminances minimales et maximales EMIN et EMAX pour l'ensemble d'images ne comprenant pas l'effet de transition détecté ; déterminer des luminances minimales et maximales SMIN et SMAX pour une plage de dynamique standard ; calculer des luminances minimales et maximales TMIN et TMAX en fonction des luminances minimales et maximales précédemment calculées et déterminées LMIN, LMAX, EMIN, EMAX, SMIN et SMAX ; Transmettre les luminances minimales et maximales TMIN et TMAX calculées pour une compression de dynamique.
FR1763357A 2017-12-29 2017-12-29 Methode de compression dynamique Active FR3076386B1 (fr)

Priority Applications (4)

Application Number Priority Date Filing Date Title
FR1763357A FR3076386B1 (fr) 2017-12-29 2017-12-29 Methode de compression dynamique
US16/958,935 US11138703B2 (en) 2017-12-29 2018-12-21 Dynamic range compression method
EP18842803.1A EP3732654A1 (fr) 2017-12-29 2018-12-21 Méthode de compression de dynamique
PCT/FR2018/053522 WO2019129981A1 (fr) 2017-12-29 2018-12-21 Méthode de compression de dynamique

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1763357 2017-12-29
FR1763357A FR3076386B1 (fr) 2017-12-29 2017-12-29 Methode de compression dynamique

Publications (2)

Publication Number Publication Date
FR3076386A1 FR3076386A1 (fr) 2019-07-05
FR3076386B1 true FR3076386B1 (fr) 2020-02-07

Family

ID=62092017

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1763357A Active FR3076386B1 (fr) 2017-12-29 2017-12-29 Methode de compression dynamique

Country Status (4)

Country Link
US (1) US11138703B2 (fr)
EP (1) EP3732654A1 (fr)
FR (1) FR3076386B1 (fr)
WO (1) WO2019129981A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3076386B1 (fr) * 2017-12-29 2020-02-07 Ateme Methode de compression dynamique
CN112565636B (zh) * 2020-12-01 2023-11-21 影石创新科技股份有限公司 图像处理方法、装置、设备和存储介质

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005284534A (ja) * 2004-03-29 2005-10-13 Inventec Appliances Corp 高ダイナミックレンジ画像を低ダイナミックレンジ画像に変換する方法及び関連装置
FR2891686B1 (fr) * 2005-10-03 2008-04-18 Envivio France Entpr Uniperson Procede et dispositif de detection de transitions dans une sequence video, procede et dispositif de codage, produits programme d'ordinateur et moyens de stockage correspondants.
US9554156B2 (en) * 2010-09-03 2017-01-24 Dolby Laboratories Licensing Corporation Method and system for illumination compensation and transition for video coding and processing
TWI575933B (zh) * 2011-11-04 2017-03-21 杜比實驗室特許公司 階層式視覺動態範圍編碼中之層分解技術
WO2014012680A1 (fr) * 2012-07-18 2014-01-23 Thomson Licensing Procede et dispositif de conversion d'une sequence d'image dont les valeurs de luminance appartiennent a une plage de valeurs de dynamique elevee
FR3002062B1 (fr) * 2013-02-14 2017-06-23 Envivio France Systeme et procede de reduction dynamique de l'entropie d'un signal en amont d'un dispositif de compression de donnees.
US9584786B2 (en) * 2014-03-05 2017-02-28 Dolby Laboratories Licensing Corporation Graphics blending for high dynamic range video
US10447961B2 (en) * 2015-11-18 2019-10-15 Interdigital Vc Holdings, Inc. Luminance management for high dynamic range displays
US10825480B2 (en) * 2017-05-31 2020-11-03 Apple Inc. Automatic processing of double-system recording
FR3076386B1 (fr) * 2017-12-29 2020-02-07 Ateme Methode de compression dynamique

Also Published As

Publication number Publication date
US20200342578A1 (en) 2020-10-29
FR3076386A1 (fr) 2019-07-05
WO2019129981A1 (fr) 2019-07-04
EP3732654A1 (fr) 2020-11-04
US11138703B2 (en) 2021-10-05

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