請用此 Handle URI 來引用此文件: http://hdl.handle.net/11455/43795
標題: A high capacity reversible data hiding scheme with edge prediction and difference expansion
作者: Wu, H.C.
蔡垂雄
Lee, C.C.
Tsai, C.S.
Chu, Y.P.
Chen, H.R.
關鍵字: Difference expansion
Digital watermarking
Edge prediction
Reversible
data hiding
Steganography
image authentication
watermarking
steganography
framework
transform
期刊/報告no:: Journal of Systems and Software, Volume 82, Issue 12, Page(s) 1966-1973.
摘要: To enhance the embedding capacity of a reversible data hiding system, in this paper, a novel multiple-base lossless scheme based on JPEG-LS pixel value prediction and reversible difference expansion will be presented. The proposed scheme employs a pixel value prediction mechanism to decrease the distortion caused by the hiding of the secret data. In general, the prediction error value tends to be much smaller in smooth areas than in edge areas, and more secret data embedded in smooth areas still meets better stego-image quality. The multiple-base notational system, on the other hand, is applied to increase the payload of the image. With the system, the payload of each pixel, determined by the complexity of its neighboring pixels, can be very different. In addition, the cover image processed by the proposed scheme can be fully recovered without any distortion. Experimental results, as shown in this paper, have demonstrated that the proposed method is capable of hiding more secret data while keeping the stego-image quality degradation imperceptible. (C) 2009 Elsevier Inc. All rights reserved.
URI: http://hdl.handle.net/11455/43795
ISSN: 0164-1212
文章連結: http://dx.doi.org/10.1016/j.jss.2009.06.056
顯示於類別:資訊管理學系

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