Affiliations: Department of Computer Science and Information
Engineering, National Chung Cheng University, Chiayi 62102, Taiwan, R.O.C.
jackjow@cs.ccu.edu.tw | 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
Engineering, National Chung Cheng University, Chiayi 62102, Taiwan, R.O.C.
km94@cs.ccu.edu.tw
Abstract: This paper proposes a large payload data embedding method for color
images. Under the fast advancement of digital equipments, color images have
become a common medium in many applications. A color image can be represented
in different color systems, for instance, RGB and YUV color systems. The
proposed method modifies the blue value of the color pixel in order to imply
the secret data because the blue value is an insensitive color to human eyes.
Furthermore, the number of secret bits that can be embedded into a cover pixel
is dynamic so the proposed method tries to embed the secret data as many as
possible. The proposed method can be applied to both RGB and YUV color systems.
However, for anti-stegoanalysis reason, the RGB color system is suitable for
the proposed high capacity data embedding method with lower image distortion.
The experimental results show that the proposed method is superior to other
methods we compared in terms of embedding capacity and visual quality.
