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5 December 2001 Robust digital watermarking using random casting method
Jin-Seob Kim, Tae-Hyun Kim, Eun-Soo Kim
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Proceedings Volume 4475, Mathematics of Data/Image Coding, Compression, and Encryption IV, with Applications; (2001) https://doi.org/10.1117/12.449590
Event: International Symposium on Optical Science and Technology, 2001, San Diego, CA, United States
Abstract
In this paper, a new digital watermarking scheme based-on the random casting method in the DCT domain is proposed. In the conventional watermarking methods, the DCT-transformed watermark is casting to the high frequency coefficients of the original cover image and the watermark is sequentially embedded in the casting frequency. But this kind of watermarking scheme can be attacked easily by the pirates and unlawful users, because these methods might have some structured patterns by the sequential embedding and the fixed casting domain. Also this method might get the damaged stego-image and is not robust to the image compression algorithms. Therefore, in this paper, a new robust digital watermarking scheme is proposed. In this algorithm, the frequency coefficients of the DCT-transformed original cover-image in which the watermark is inserted are randomly selected. These random position values of the casting frequencies can be used as another secret-key together with the watermark-key. From some experimental results the proposed method is found to be more robust to the possible attacks than those of the conventional methods.
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Jin-Seob Kim, Tae-Hyun Kim, and Eun-Soo Kim "Robust digital watermarking using random casting method", Proc. SPIE 4475, Mathematics of Data/Image Coding, Compression, and Encryption IV, with Applications, (5 December 2001); https://doi.org/10.1117/12.449590
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KEYWORDS
Digital watermarking
Image compression
Image processing
Genetic algorithms
Image encryption
Image quality
Computer networks
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