Affiliations: Department of Information Engineering and Computer
Science, Feng Chia University, Taichung 40724, Taiwan, R.O.C.
ccc@cs.ccu.edu.tw | Department of Computer Science and Information
Management, Providence University, Taichung 43301, Taiwan, R.O.C.
mhlin3@pu.edu.tw | Department of Computer Science and Information
Engineering, National Chung Cheng University, Chiayi 621, Taiwan, R.O.C.
chenyh@cs.ccu.edu.tw
Note: [] Address for correspondence: Department of Information
Engineering and Computer Science, Feng Chia University, Taichung 40724, Taiwan,
R.O.C.
Abstract: Embedding large amounts of secret data into a cover image with low
distortion is an important research issue in steganography. The proposed scheme
uses two clustering technologies - similar and dissimilar clustering - to
enhance hiding capacity as provided by Du and Hsu's scheme. In
general, the hiding capacity of our proposed scheme is higher than that of Du
and Hsu's scheme, about 16 Kb for the same image quality. In
addition, the image quality of our proposed scheme is more than provided by the
schemes of either Du and Hsu's or Shie et al., about 2 dB.
Moreover, the distortion for each test image in our proposed scheme is always
less than those caused by Du and Hsu's and Shie et
al.'s schemes. Experimental results confirm that the proposed
scheme is significantly better than earlier works.
Keywords: Data embedding, steganography, stego-image, clustering, dissimilar clustering
