Wenping Yu

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



Research Interests: Computational Geometry, Theoretical Computer Science, Computer systems and computational processes


Wenping Yu was born in 1986 and received her M.S. degree in Applied Mathematics in 2012 from Shantou University, Shantou, China. Her research interest is fractal geometry and its application in computer science.

Author Articles
An Image Hiding Scheme Using 3D Sawtooth Map and Discrete Wavelet Transform

By Ruisong Ye Wenping Yu

DOI: https://doi.org/10.5815/ijigsp.2012.06.08, Pub. Date: 8 Jul. 2012

An image encryption scheme based on the 3D sawtooth map is proposed in this paper. The 3D sawtooth map is utilized to generate chaotic orbits to permute the pixel positions and to generate pseudo-random gray value sequences to change the pixel gray values. The image encryption scheme is then applied to encrypt the secret image which will be imbedded in one host image. The encrypted secret image and the host image are transformed by the wavelet transform and then are merged in the frequency domain. Experimental results show that the stego-image looks visually identical to the original host one and the secret image can be effectively extracted upon image processing attacks, which demonstrates strong robustness against a variety of attacks.

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