Wang Yunjin

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This paper introduces a novel steganography-based approach to protect the iris data by hiding it into a digital image for personal identification purpose. Logistic map is utilized for generating two pseudorandom sequences, one for encrypting the biometric data before hiding, and another for hiding position encryption. Meanwhile, JND (Just Noticeable(More)
In this paper, a novel robust watermarking algorithm is presented in mixed transform domain. The original host image is first decomposed into four sub-bands by Discrete Wavelet Transform (DWT). Then approximate coefficients are relocated by Arnold transform to create a noise-like version and divided into non-overlapping 8×8 blocks. Each block is(More)
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