Image hiding scheme using modulus function and optimal substitution table |
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Authors: | C S Chan C C Chang Y C Hu |
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Affiliation: | (1) Department of Computer Science and Information Engineering, National Chung Cheng University, Chiayi, Taiwan, 62107, R.O.C.;(2) Department of Computer Science and Information Management, Providence University, Taichung, Taiwan, 433, R.O.C. |
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Abstract: | The simple least-significant-bit (LSB) substitution technique is the easiest way to embed secret data in the host image. To
avoid image degradation of the simple LSB substitution technique, Wang et al. proposed a method using the substitution table
to process image hiding. Later, Thien and Lin employed the modulus function to solve the same problem. In this paper, the
proposed scheme combines the modulus function and the optimal substitution table to improve the quality of the stego-image.
Experimental results show that our method can achieve better quality of the stego-image than Thien and Lin’s method does.
The text was submitted by the authors in English.
Chin-Shiang Chan received his BS degree in Computer Science in 1999 from the National Cheng Chi University, Taipei, Taiwan and the MS degree
in Computer Science and Information Engineering in 2001 from the National Chung Cheng University, ChiaYi, Taiwan. He is currently
a Ph.D. student in Computer Science and Information Engineering at the National Chung Cheng University, Chiayi, Taiwan. His
research fields are image hiding and image compression.
Chin-Chen Chang received his BS degree in applied mathematics in 1977 and his MS degree in computer and decision sciences in 1979, both from
the National Tsing Hua University, Hsinchu, Taiwan. He received his Ph.D. in computer engineering in 1982 from the National
Chiao Tung University, Hsinchu, Taiwan. During the academic years of 1980–1983, he was on the faculty of the Department of
Computer Engineering at the National Chiao Tung University. From 1983–1989, he was on the faculty of the Institute of Applied
Mathematics, National Chung Hsing University, Taichung, Taiwan. From 1989 to 2004, he has worked as a professor in the Institute
of Computer Science and Information Engineering at National Chung Cheng University, Chiayi, Taiwan. Since 2005, he has worked
as a professor in the Department of Information Engineering and Computer Science at Feng Chia University, Taichung, Taiwan.
Dr. Chang is a Fellow of IEEE, a Fellow of IEE and a member of the Chinese Language Computer Society, the Chinese Institute
of Engineers of the Republic of China, and the Phi Tau Phi Society of the Republic of China. His research interests include
computer cryptography, data engineering, and image compression.
Yu-Chen Hu received his Ph.D. degree in Computer Science and Information Engineering from the Department of Computer Science and Information
Engineering, National Chung Cheng University, Chiayi, Taiwan in 1999. Dr. Hu is currently an assistant professor in the Department
of Computer Science and Information Engineering, Providence University, Sha-Lu, Taiwan. He is a member of the SPIE society
and a member of the IEEE society. He is also a member of the Phi Tau Phi Society of the Republic of China. His research interests
include image and data compression, information hiding, and image processing. |
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Keywords: | image hiding the least-significant-bit substitution technique modulus function |
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