- 专利标题： METHOD AND DEVICE FOR INVERSE TONE MAPPING
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申请号： EP17196780.5申请日： 2017-10-17
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公开(公告)号： EP3312799A1公开(公告)日： 2018-04-25
- 发明人: GUERMOUD, Hassane , THEBAULT, Cédric , KERVEC, Jonathan
- 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： Browaeys, Jean-Philippe
- 优先权： EP16306378 20161020
- 主分类号： G06T5/00
- IPC分类号： G06T5/00 ; G09G5/00 ; H04N5/14 ; G06K9/00
摘要：
The invention relates to a method for converting a standard dynamic range (SDR) sequence into a high dynamic range (HDR) sequence. It comprises:
- determining (S1) successive shots in the SDR sequence by cut detection,
-detecting (S2) if the SDR sequence comprises a subsequence of at least two successive short shots having a duration lower than D 1 , said subsequence comprising at least one bright shot having a luminance and a size greater than L 1 and SZ 1 respectively,
-mapping (S3) the luminance range of bright shots of the detected subsequence from the low dynamic range to a first high dynamic range and mapping the other shots of the SDR sequence from the standard dynamic range to a second high dynamic range in order to generate the HDR sequence, the first high dynamic range having a maximal value L max1 lower than that of the second high dynamic range L max2 .
- determining (S1) successive shots in the SDR sequence by cut detection,
-detecting (S2) if the SDR sequence comprises a subsequence of at least two successive short shots having a duration lower than D 1 , said subsequence comprising at least one bright shot having a luminance and a size greater than L 1 and SZ 1 respectively,
-mapping (S3) the luminance range of bright shots of the detected subsequence from the low dynamic range to a first high dynamic range and mapping the other shots of the SDR sequence from the standard dynamic range to a second high dynamic range in order to generate the HDR sequence, the first high dynamic range having a maximal value L max1 lower than that of the second high dynamic range L max2 .
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