Leyi Zhuang

Work place: Department of Mathematics, Shantou University Shantou, Guangdong, 515063, China



Research Interests: Computational Geometry, Computer systems and computational processes, Applied computer science, Computer Science & Information Technology


Leyi Zhuang was born in 1984 and received his M.S. degree in Applied Mathematics in 2010 from Shantou University, Shantou, China. He is a teacher at the Eighteenth Middle School of Guangzhou City, Guangdong, China. His research interest is fractal geometry and its application in computer science.

Author Articles
Baker Map's Itinerary Based Image Scrambling Method and Its Watermarking Application in DWT Domain

By Ruisong Ye Leyi Zhuang

DOI: https://doi.org/10.5815/ijigsp.2012.01.02, Pub. Date: 8 Feb. 2012

An image scrambling method based on the itinerary of the improved 3D Baker map is proposed in this paper. The standard 3D Baker map is improved by the tent map, so that the itinerary becomes more complicated and can be used to encode the image pixel positions to scramble the image. The scrambling method is applied to the preprocessing in watermarking. The watermark bits are embedded in the discrete wavelet transform (DWT) spectral domain based on the scrambling of watermark, the odd-even adjustment rule and the neighbor mean value. The watermark bits are embedded in medium coefficients in DWT domain of the host image. Experimental results show that the watermarked image looks visually identical to the original one and the watermark can be effectively extracted upon image processing attacks, which demonstrates strong robustness against a variety of attacks.

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