A new steganographic method for color and grayscale image hiding

Authors:
Yuan-Hui Yu;Chin-Chen Chang;Iuon-Chang Lin
Affiliations:
Department of Multimedia and Game Science, Southern Taiwan University of Technology, Tainan, Taiwan 710, ROC;Department of Information Engineering and Computer Science, Feng Chia University, Taichung, Taiwan 40724, ROC;Department of Management Information Systems, National Chung Hsing University, Taichung, Taiwan
Venue:
Computer Vision and Image Understanding
Year:
2007

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Abstract

In this paper, we present a steganographic method for embedding a color or a grayscale image in a true color image. Three types of secret images can be carried by the proposed method: hiding a color secret image, hiding a palette-based 256-color secret image, and hiding a grayscale image in a true color image. Secret data are protected by the conventional crypto system DES. We compare the image quality and hiding capacity of the proposed method with those of the scheme in Lin et al.'s scheme. According to the experimental results, the image quality of the proposed method is better than that of the Lin et al.'s scheme. In addition, annotation data can be hidden with the secret image in the host image. The hiding capacity of the proposed method is greater than that of other compared schemes. The experimental results show that the proposed method is a secure steganographic method that provides high hiding capacity and good image quality.