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. |
申请公布号 |
EP1928180(A1) |
申请公布日期 |
2008.06.04 |
申请号 |
EP20060782004 |
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 |
H04N19/00;G06T1/00;H04N1/387;H04N7/08;H04N7/24;H04N19/102;H04N19/134;H04N19/136;H04N19/167;H04N19/176;H04N19/186;H04N19/196;H04N19/423;H04N19/46;H04N19/467;H04N19/625;H04N19/70;H04N19/80 |
主分类号 |
H04N19/00 |
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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