发明名称 |
Digital Watermark Padding Method, Digital Watermark Padding Device, Digital Watermark Detecting Method, Digital Watermark Detecting Device, And Program |
摘要 |
A digital watermark embedding method of the present invention includes: a step of sequentially obtaining each frame image of the moving image data and frame display time; a step of generating a watermark pattern using watermark information, the frame display time and watermark pattern switching information; a step of superimposing the watermark pattern onto the frame image, and combining watermark embedded frame images obtained by sequentially repeating the processes to generate watermark embedded moving image data. A digital watermark detection method includes a step of sequentially obtaining a frame image; a step of generating a difference image between the currently obtained frame image and a previously obtained frame image; and a step of performing digital watermark detection from the difference image to output digital watermark detection status, and when digital watermark detection process is continued, obtaining a new frame again to repeat the above processes.
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申请公布号 |
US2008089552(A1) |
申请公布日期 |
2008.04.17 |
申请号 |
US20060666311 |
申请日期 |
2006.07.31 |
申请人 |
NIPPON TELEGRAPH AND TELEPHONE CORPORATION |
发明人 |
NAKAMURA TAKAO;YAMAMOTO SUSUMU;KITAHARA RYO;MIYATAKE TAKASHI;KATAYAMA ATUSHI;MIYACHI HISATO |
分类号 |
G06K9/00;H04N7/24 |
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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