发明名称 |
ENCODING, DECODING AND REPRESENTING HIGH DYNAMIC RANGE IMAGES |
摘要 |
A method and an apparatus for decoding high dynamic range image data is disclosed which applies pre- or post-correction to compensate for lossy encoding of the high dynamic range information in a data structure which comprises a tone map having a reduced dynamic range and HDR information. The HDR image can be reconstructed from the tone map and the HDR information. The data structure can be backwards compatible with legacy hardware or software viewers. The data structure may comprise a JFIF file having the tone map encoded as a JPEG Image with the HDR information in an application extension or text comment field of the JFIF file, or a MPEG file having the tone map encoded as a MPEG image with the HDR information in a video or audio channel of the MPEG file. |
申请公布号 |
EP1743301(B1) |
申请公布日期 |
2012.10.10 |
申请号 |
EP20040802374 |
申请日期 |
2004.12.24 |
申请人 |
DOLBY LABORATORIES LICENSING CORPORATION |
发明人 |
WARD, GREGORY, J.;SIMMONS, MARYANN |
分类号 |
G06T9/00;G06T5/00;G06T5/40;H04N1/387;H04N7/26 |
主分类号 |
G06T9/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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