Invention Grant
- Patent Title: Display management for high dynamic range video
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Application No.: US15544320Application Date: 2016-01-14
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Publication No.: US09961237B2Publication Date: 2018-05-01
- Inventor: Robin Atkins
- Applicant: Dolby Laboratories Licensing Corporation
- Applicant Address: US CA San Francisco
- Assignee: Dolby Laboratories Licensing Corporation
- Current Assignee: Dolby Laboratories Licensing Corporation
- Current Assignee Address: US CA San Francisco
- International Application: PCT/US2016/013352 WO 20160114
- International Announcement: WO2016/118395 WO 20160728
- Main IPC: G06K9/00
- IPC: G06K9/00 ; H04N1/60 ; H04N9/64

Abstract:
A display management processor receives an input image with enhanced dynamic range to be displayed on a target display which has a different dynamic range than a reference display. The input image is first transformed into a perceptually-quantized (PQ) color space, preferably the IPT-PQ color space. A color volume mapping function, which includes an adaptive tone-mapping function and an adaptive gamut mapping function, generates a mapped image. A detail-preservation step is applied to the intensity component of the mapped image to generate a final mapped image with a filtered tone-mapped intensity image. The final mapped image is then translated back to the display's preferred color space. Examples of the adaptive tone mapping and gamut mapping functions are provided.
Public/Granted literature
- US20180013927A1 Display Management for High Dynamic Range Video Public/Granted day:2018-01-11
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