发明名称 |
APPARATUS AND METHOD FOR GENERATING STRUCTURALLY MULTI-PATTERNED WATERMARK, WATERMARK INSERTION APPARATUS AND METHOD USING THE SAME, AND WATERMARK DETECTION APPARATUS AND METHOD USING THE SAME |
摘要 |
The present invention relates to an apparatus and a method for generating a structurally multi-patterned watermark and apparatuses and methods for inserting and detecting a watermark using the same. The invention comprises the steps of: splitting user's concealed information that is inputted into plural pieces of data, performing the message-encoding for the split data pieces, modulating the image signal format of the pieces of data for which the message-encoding is performed, generating a synchronization signal to cope with the two-dimensional cropping or shifting of an image, generating plural sub-base patterns using plural message signals and synchronization signals both which are modulated into an image signal format, and generating a structurally multi-patterned watermark which is one unit watermark using the plural sub-base patterns. Therefore, the invention is able to increase the payload of concealed information of watermark. In addition, the invention is capable of coping robustly with not only the two-dimensional cropping or shifting of an image but also general geometric deformation of the image through the structural features of the watermark. |
申请公布号 |
WO2010011035(A3) |
申请公布日期 |
2010.04.22 |
申请号 |
WO2009KR03690 |
申请日期 |
2009.07.07 |
申请人 |
CK&B CO., LTD.;BAE, KI-HYEOK;KIM, HYUN-TAE;CHO, IN-JE |
发明人 |
BAE, KI-HYEOK;KIM, HYUN-TAE;CHO, IN-JE |
分类号 |
H04N5/913 |
主分类号 |
H04N5/913 |
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