MX2017013459A - Metodo y dispositivo para mapeo tonal inverso. - Google Patents

Metodo y dispositivo para mapeo tonal inverso.

Info

Publication number
MX2017013459A
MX2017013459A MX2017013459A MX2017013459A MX2017013459A MX 2017013459 A MX2017013459 A MX 2017013459A MX 2017013459 A MX2017013459 A MX 2017013459A MX 2017013459 A MX2017013459 A MX 2017013459A MX 2017013459 A MX2017013459 A MX 2017013459A
Authority
MX
Mexico
Prior art keywords
dynamic range
sequence
high dynamic
shots
sdr
Prior art date
Application number
MX2017013459A
Other languages
English (en)
Inventor
Thebault Cédric
Kervec Jonathan
Guermoud Hassane
Original Assignee
Thomson Licensing
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 Thomson Licensing filed Critical Thomson Licensing
Publication of MX2017013459A publication Critical patent/MX2017013459A/es

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • H04N7/00—Television systems
    • H04N7/01—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level
    • H04N7/0125—Conversion of standards, e.g. involving analogue television standards or digital television standards processed at pixel level one of the standards being a high definition standard
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/14—Picture signal circuitry for video frequency region
    • H04N5/147—Scene change detection
    • 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
    • H04N23/71—Circuitry for evaluating the brightness variation
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/40—Scenes; Scene-specific elements in video content
    • G06V20/49—Segmenting video sequences, i.e. computational techniques such as parsing or cutting the sequence, low-level clustering or determining units such as shots or scenes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N25/00—Circuitry of solid-state image sensors [SSIS]; Control thereof
    • H04N25/50—Control of the SSIS exposure
    • H04N25/57—Control of the dynamic range
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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 OR CALCULATING; 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Computing Systems (AREA)
  • Studio Devices (AREA)
  • Picture Signal Circuits (AREA)
  • Image Processing (AREA)
  • Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)

Abstract

La invención se refiere a un método para convertir una secuencia de rango dinámico estándar (SDR) secuencia en una secuencia alto rango dinámico (HDR). Comprende: - determinar (S1) tomas sucesivas en la secuencia de SDR por detección de corte, - detectar (S2) si la secuencia de SDR comprende una subsecuencia de al menos dos tomas cortas sucesivas que tienen una duración menor que D1, dicha subsecuencia comprende al menos una toma brillante que tiene una luminancia y un tamaño mayor que L1 y SZ1, respectivamente, - mapear (S3) el rango de luminancia de las tomas brillantes de la subsecuencia detectada a partir del bajo rango dinámico en un primer alto rango dinámico y mapear las demás tomas de la secuencia de SDR del rango dinámico estándar en un segundo alto rango dinámico con objeto de generar la secuencia de HDR, el primer alto rango dinámico tiene un valor máximo Lmax1 menor que el del segundo alto rango dinámico Lmax2.
MX2017013459A 2016-10-20 2017-10-19 Metodo y dispositivo para mapeo tonal inverso. MX2017013459A (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP16306378.7A EP3312798A1 (en) 2016-10-20 2016-10-20 Method and device for inverse tone mapping

Publications (1)

Publication Number Publication Date
MX2017013459A true MX2017013459A (es) 2018-09-28

Family

ID=57345843

Family Applications (1)

Application Number Title Priority Date Filing Date
MX2017013459A MX2017013459A (es) 2016-10-20 2017-10-19 Metodo y dispositivo para mapeo tonal inverso.

Country Status (9)

Country Link
US (1) US10033962B2 (es)
EP (2) EP3312798A1 (es)
JP (1) JP2018110373A (es)
KR (1) KR20180043741A (es)
CN (1) CN107968919A (es)
BR (1) BR102017022672A2 (es)
CA (1) CA2982979A1 (es)
MX (1) MX2017013459A (es)
RU (1) RU2017134310A (es)

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CN109274985B (zh) * 2018-10-12 2020-04-28 腾讯科技（深圳）有限公司 视频转码方法、装置、计算机设备和存储介质
KR102127760B1 (ko) 2018-11-30 2020-06-29 고려대학교 산학협력단 단일 영상을 기반으로 한 인버스 톤 매핑의 최적화 장치 및 방법, 상기 방법을 수행하기 위한 기록 매체
CN111754412B (zh) * 2019-03-29 2024-04-19 Tcl科技集团股份有限公司 构建数据对的方法、装置及终端设备
CN111709896B (zh) 2020-06-18 2023-04-07 三星电子（中国）研发中心 一种将ldr视频映射为hdr视频的方法和设备
JP7744937B2 (ja) * 2020-06-26 2025-09-26 インターディジタル・シーイー・パテント・ホールディングス・ソシエテ・パ・アクシオンス・シンプリフィエ 適応型輝点減衰を伴う逆トーンマッピング
CN113706412B (zh) * 2021-08-24 2024-02-09 北京电影学院 一种sdr到hdr转换方法
CN113850743B (zh) * 2021-11-30 2022-03-01 江苏游隼微电子有限公司 一种基于自适应参数的视频全局色调映射方法
WO2023138913A1 (en) * 2022-01-19 2023-07-27 Interdigital Vc Holdings France, Sas Expansion function selection in an inverse tone mapping process

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WO2012030622A1 (en) 2010-08-31 2012-03-08 Dolby Laboratories Licensing Corporation Ambient black level
ES2550782T3 (es) * 2011-03-24 2015-11-12 Koninklijke Philips N.V. Aparato y método para analizar gradaciones de imágenes
JP6009538B2 (ja) * 2011-04-28 2016-10-19 コーニンクレッカ フィリップス エヌ ヴェＫｏｎｉｎｋｌｉｊｋｅ Ｐｈｉｌｉｐｓ Ｎ．Ｖ． Ｈｄｒ画像を符号化及び復号するための装置及び方法
CA3114379C (en) * 2011-12-06 2023-06-27 Dolby Laboratories Licensing Corporation Device and method of improving the perceptual luminance nonlinearity - based image data exchange across different display capabilities
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CN105684412B (zh) * 2013-10-22 2017-04-26 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
US9607364B2 (en) * 2013-11-22 2017-03-28 Dolby Laboratories Licensing Corporation Methods and systems for inverse tone mapping
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Also Published As

Publication number Publication date
US20180115742A1 (en) 2018-04-26
BR102017022672A2 (pt) 2018-05-02
EP3312798A1 (en) 2018-04-25
RU2017134310A (ru) 2019-04-03
CN107968919A (zh) 2018-04-27
EP3312799A1 (en) 2018-04-25
US10033962B2 (en) 2018-07-24
CA2982979A1 (en) 2018-04-20
KR20180043741A (ko) 2018-04-30
JP2018110373A (ja) 2018-07-12

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