发明名称 |
Encoding apparatus and method |
摘要 |
An encoding data processing apparatus is arranged to generate a marked copy of an image by introducing a code word into a copy of the image. The apparatus comprises a code word generator operable to generate the code word. The encoding apparatus includes an image perception analyser and a strength adapter. The image perception analyser is operable to receive the image and to generate weighting factors. A combiner is operable to combine the weighted code word with the image. The image perception analyser includes a contrast masking engine, a smoothness compensation engine and a compensation combiner. The weighting factor has an effect of reducing the code word coefficients for image parts having lower relative contrast measures. A compensation combiner is operable to combine the compensation factors with the weighting factor. The likelihood of a code word being perceivable when the code word is combined with an image is reduced.
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申请公布号 |
US7792322(B2) |
申请公布日期 |
2010.09.07 |
申请号 |
US20050261555 |
申请日期 |
2005.10.28 |
申请人 |
SONY UNITED KINGDOM LIMITED |
发明人 |
TAPSON DANIEL WARREN |
分类号 |
G06K9/00;G06K9/36;G06K9/46;G06K15/00;G06T1/00;H04N1/40 |
主分类号 |
G06K9/00 |
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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