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1 August 2001 Adaptive two-dimensional image watermarking system
Kaixiang Yi, Jiaoying Shi
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Proceedings Volume 4314, Security and Watermarking of Multimedia Contents III; (2001) https://doi.org/10.1117/12.435428
Event: Photonics West 2001 - Electronic Imaging, 2001, San Jose, CA, United States
Abstract
This paper proposes an adaptive 2D image watermarking algorithm in DCT domain. In order to embed an image watermark, we split the image watermark into blocks and transform them into DCT domain. Then these DCT coefficients are quantized and adjusted. Finally, we choose the non-zero DCT coefficients of each block to constitute the watermark. We split the cover image into blocks and classify these blocks based on the human visual system, and transform them into DCT domain. According to the classification, the watermark components are enhanced with different intensity and are embedded into some low-frequency DCT coefficients of the cover image. The experimental results are excellent.
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Kaixiang Yi and Jiaoying Shi "Adaptive two-dimensional image watermarking system", Proc. SPIE 4314, Security and Watermarking of Multimedia Contents III, (1 August 2001); https://doi.org/10.1117/12.435428
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KEYWORDS
Digital watermarking
Image compression
Image restoration
Multimedia
Image enhancement
Image retrieval
Visual system
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