A Novel Digital Watermarking Algorithm for Medical Color Image

Abstract:

In this paper, we propose a novel medical color image digital watermarking algorithm, which can realize watermark capacity, transparency and robustness effective compromise. We encrypt the watermark image by Arnold Transform at first and then take it into a random sequence. The principal component of medical image is divided into some sub-blocks with 4×4 and each block is transformed by DCT. One bit of watermark is embedded by comparing the size of specific DCT coefficients in the adjacent sub-blocks. Watermark can be extracted without the original medical image. The experimental results show that the digital watermarking algorithm has a high transparency and big capacity as well as certain robustness.

• Periodical: Advanced Materials Research (Volumes 756-759)
• Pages: 3303-3308
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.756-759.3303
• Online since: September 2013
• Authors: Xin De Sun
• Keywords: Blind Detection, Medical Color Image, Principal Component Analysis (PCA), Transparency, Watermarking

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