GB2526478A - High dynamic range imaging systems - Google Patents

High dynamic range imaging systems Download PDF

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Publication number
GB2526478A
GB2526478A GB1515749.8A GB201515749A GB2526478A GB 2526478 A GB2526478 A GB 2526478A GB 201515749 A GB201515749 A GB 201515749A GB 2526478 A GB2526478 A GB 2526478A
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GB
United Kingdom
Prior art keywords
processing module
data processing
tone mapping
dynamic range
high dynamic
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.)
Granted
Application number
GB1515749.8A
Other versions
GB2526478B (en
GB201515749D0 (en
Inventor
Alan Gordon Chalmers
Kurt Debattista
Maximino Esteves Correla Bessa
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.)
University of Warwick
Original Assignee
University of Warwick
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.)
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Publication date
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Publication of GB201515749D0 publication Critical patent/GB201515749D0/en
Publication of GB2526478A publication Critical patent/GB2526478A/en
Application granted granted Critical
Publication of GB2526478B publication Critical patent/GB2526478B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • G06T5/92—
    • 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
    • G06T2207/20012—Locally 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

Abstract

A method for tone mapping a high dynamic range image to be presented on a display device (15). The display device is provided with a camera (17) which captures an image indicating ambient light levels experienced at a number of positions over the display (16) of the device. A data processing module (22) processes signals from the camera and generates data which is used in adapting a tone mapping function applied to the high dynamic range image so as to account for different ambient light conditions. The data processing module may take into account different lighting conditions at different positions on the display when generating the data which is used in adapting the tone mapping function. The data processing module may also use signals from a camera (20) on the other side of the device and / or from an orientation detection module (21). The data processing module may also use preference data supplied for a series of video frames, when adapting the tone mapping function. The device may be a mobile phone, a table computing device or a portable computer.
GB1515749.8A 2013-03-08 2014-03-10 High dynamic range imaging systems Expired - Fee Related GB2526478B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1304221.3A GB201304221D0 (en) 2013-03-08 2013-03-08 High Dynamic Range Imaging Systems
PCT/GB2014/050696 WO2014135901A1 (en) 2013-03-08 2014-03-10 High dynamic range imaging systems

Publications (3)

Publication Number Publication Date
GB201515749D0 GB201515749D0 (en) 2015-10-21
GB2526478A true GB2526478A (en) 2015-11-25
GB2526478B GB2526478B (en) 2019-06-12

Family

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Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB1304221.3A Ceased GB201304221D0 (en) 2013-03-08 2013-03-08 High Dynamic Range Imaging Systems
GB1515749.8A Expired - Fee Related GB2526478B (en) 2013-03-08 2014-03-10 High dynamic range imaging systems

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB1304221.3A Ceased GB201304221D0 (en) 2013-03-08 2013-03-08 High Dynamic Range Imaging Systems

Country Status (2)

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GB (2) GB201304221D0 (en)
WO (1) WO2014135901A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106031172B (en) 2014-02-25 2019-08-20 苹果公司 For Video coding and decoded adaptive transmission function
US9942489B2 (en) 2015-06-02 2018-04-10 Samsung Electronics Co., Ltd. Adaptive tone mapping based on local contrast
JP6574270B2 (en) 2015-06-05 2019-09-11 アップル インコーポレイテッドＡｐｐｌｅ Ｉｎｃ． Rendering and display of high dynamic range content
JP2021527015A (en) 2018-06-12 2021-10-11 アウトストア・テクノロジー・エーエスＡｕｔｏｓｔｏｒｅ Ｔｅｃｈｎｏｌｏｇｙ Ａｓ High speed bin lift for automatic storage system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011097060A2 (en) * 2010-02-04 2011-08-11 Microsoft Corporation High dynamic range image generation and rendering
WO2012030622A1 (en) * 2010-08-31 2012-03-08 Dolby Laboratories Licensing Corporation Ambient black level
US20120229526A1 (en) * 2011-03-11 2012-09-13 Calgary Scientific Inc. Method and system for remotely calibrating display of image data

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011097060A2 (en) * 2010-02-04 2011-08-11 Microsoft Corporation High dynamic range image generation and rendering
WO2012030622A1 (en) * 2010-08-31 2012-03-08 Dolby Laboratories Licensing Corporation Ambient black level
US20120229526A1 (en) * 2011-03-11 2012-09-13 Calgary Scientific Inc. Method and system for remotely calibrating display of image data

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
MANTUICK ET AL "Display Adaptive Tone Mapping" ACM SIGGRAPH 2008 PAPERS ON, SIGGRAPH '08, 1 January 2008 (2008-01-01) XP055043632, New York, USA, DOI: 10.1145/1399504.1360667 ISBN: 978-1-45-030112-1. See Abstract, Section 5, Section 6.1, Section 7 & Figure 1 *

Also Published As

Publication number Publication date
GB2526478B (en) 2019-06-12
WO2014135901A1 (en) 2014-09-12
GB201515749D0 (en) 2015-10-21
GB201304221D0 (en) 2013-04-24

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PCNP Patent ceased through non-payment of renewal fee

Effective date: 20200310