Abstract
We present a new DCT-based block max-min algorithm for digital watermark embedding in images. Our algorithm uses intra-block bordering upon pixels relations to generate the watermarked image. The features of our method to embed the watermark are: (1) the watermark is perceptually invisible; (2) low loss of relevant information of the original image; (3) the watermark can be read only by using a secret key, (4) the watermark is robust against translation and area cropping; and (5) retrieval of embedded watermark does not need the original image. We describe the algorithm framework and its performance against translation and area cropping with experiments.
This work is supported in part by RGC Earmarked Grant # CUHK4176/97E.
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Duan, F.Y., King, I., Chan, L.W., Xu, L. (1998). Intra-block max-min algorithm for embedding robust digital watermark into images. In: Ip, H.H.S., Smeulders, A.W.M. (eds) Multimedia Information Analysis and Retrieval. MINAR 1998. Lecture Notes in Computer Science, vol 1464. Springer, Berlin, Heidelberg. https://doi.org/10.1007/BFb0016503
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DOI: https://doi.org/10.1007/BFb0016503
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