摘要(英) |
Abstract
In this paper, a novel watermarking system is proposed. Our main propose is to protect the copyright of owners. There are two important characteristics to satisfy with the function requirements of watermarking system. In addition, the spatial, DCT, and DWT domains are successfully applied.
The first characteristic is to let the image owners set the first secure key by their own, i.e., the external code in this system.
The second characteristic is to pre-set several embedded positions of watermarking data based on their significance in original image. After using an Exclusive-Nor (XNOR) operator to choose appropriate embedded positions of watermarking data, mapping, and encoding, the second secure key is generated, i.e., the internal code in this system.
Combining the above two characteristics and verifying by programs, the proposed method is proved to have good imperceptibility. Furthermore, the proposed method has high robustness even through attacks, and we do not need the aid of original image to extract watermark. |
參考文獻 |
參考文獻
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