Invention Grant
- Patent Title: Method and device for encoding both a HDR picture and a SDR picture obtained from said HDR picture using color mapping functions
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Application No.: US15741257Application Date: 2016-06-27
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Publication No.: US11006151B2Publication Date: 2021-05-11
- Inventor: Yannick Olivier , Fabrice Leleannec , Patrick Lopez , Philippe Bordes , Sebastien Lasserre , David Touze
- Applicant: INTERDIGITAL MADISON PATENT HOLDINGS, SAS
- Applicant Address: FR Paris
- Assignee: INTERDIGITAL MADISON PATENT HOLDINGS, SAS
- Current Assignee: INTERDIGITAL MADISON PATENT HOLDINGS, SAS
- Current Assignee Address: FR Paris
- Agency: Invention Mine LLC
- Priority: EP15306048 20150630
- International Application: PCT/EP2016/064837 WO 20160627
- International Announcement: WO2017/001330 WO 20170105
- Main IPC: H04N7/12
- IPC: H04N7/12 ; H04N11/02 ; H04N19/98 ; H04N19/30 ; H04N19/182 ; H04N19/186 ; H04N19/44 ; H04N19/70
Abstract:
A method and device of encoding both a HDR picture (IHDR) and a first SDR picture (ISDR1) obtained from said HDR picture, in at least one bitstream (F1, F2, F3, F4). The method comprises: —obtaining (210) a second SDR picture (ISDR2) by tone-mapping the HDR picture (IHDR); —obtaining (230) a color mapping function (CMF) that allows the mapping of the colors of the second SDR picture (ISDR2) onto the colors of a third SDR picture (ISDR3) obtained (220) from the first SDR picture (ISDR1); —encoding (240), in a bitstream, an information (INF) representative of the color mapping function; and —encoding (260), in a bitstream, a fourth SDR picture (ISDR4) obtained (250) from the first SDR picture (ISDR1). The present disclosure further relates to a method and device of decoding.
Public/Granted literature
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