发明公开
- 专利标题： METHOD AND DEVICE FOR ENCODING A HDR PICTURE
- 专利标题（中）： 用于编码HDR图片的方法和设备
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申请号： EP15306816.8申请日： 2015-11-16
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公开(公告)号： EP3169070A1公开(公告)日： 2017-05-17
- 发明人: LELEANNEC, Fabrice , LASSERRE, Sébastien , GALPIN, Franck , POIRIER, Tangi
- 申请人： Thomson Licensing
- 申请人地址： 1-5, rue Jeanne d'Arc 92130 Issy-les-Moulineaux FR
- 专利权人： Thomson Licensing
- 当前专利权人： Thomson Licensing
- 当前专利权人地址： 1-5, rue Jeanne d'Arc 92130 Issy-les-Moulineaux FR
- 代理机构： Huchet, Anne
- 主分类号： H04N19/98
- IPC分类号： H04N19/98 ; H04N19/196 ; G06T5/00
摘要：
A method for coding an HDR picture is disclosed that comprises:
- mapping the HDR picture to obtain a SDR picture;
- determining color correcting parameters;
- color correcting said SDR picture responsive to said color correcting parameters; and
- encoding the color corrected SDR picture in a stream.
In the method, determining color correcting parameters comprises:
- determining an intermediate SDR picture so that at least one color appearance value is preserved between said HDR picture and said intermediate SDR picture;
- determining the color correcting parameters from said intermediate SDR picture and from said SDR picture.
- mapping the HDR picture to obtain a SDR picture;
- determining color correcting parameters;
- color correcting said SDR picture responsive to said color correcting parameters; and
- encoding the color corrected SDR picture in a stream.
In the method, determining color correcting parameters comprises:
- determining an intermediate SDR picture so that at least one color appearance value is preserved between said HDR picture and said intermediate SDR picture;
- determining the color correcting parameters from said intermediate SDR picture and from said SDR picture.
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