Volume 8 Number 7 (Jul. 2013)
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JCP 2013 Vol.8(7): 1677-1682 ISSN: 1796-203X
doi: 10.4304/jcp.8.7.1677-1682

An Adaptive Reversible Image Watermarking Scheme Based on Integer Wavelet Coefficients

Chien-Chang Chen1, Zeng-Chuang Jiun1, and Chien-Hsiang Hsu2
1 Department of Computer Science and Information Engineering, Tamkang University
2 Department of Information Management, Hsuan Chuang University


Abstract—This paper presents an integer wavelet coefficients based reversible image watermarking scheme. A reversible image watermarking approach extracts the embedded watermarks from a watermarked image and recovers the watermarked image to the original image simultaneously. The proposed approach first applies the host image to 3-layered integer wavelet transform. Nine subimages are acquired from the 3-layered integer wavelet transform. Each subimage is then segmented to blocks of size 2L2L, where L is determined by structure of the subimage. Then, reversible watermarks are embedded into differences between central ordered pixel and other pixels in each block. Largest difference in each block determines the embedded quantity in each difference. Experimental results show that the proposed adaptive block size scheme has high capacity and quality ratio. A better selection on subimage embedding is also provided.

Index Terms—reversible image watermarking, integer wavelet transform, difference expansion, adaptive block size

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Cite: Chien-Chang Chen, Zeng-Chuang Jiun, and Chien-Hsiang Hsu, " An Adaptive Reversible Image Watermarking Scheme Based on Integer Wavelet Coefficients," Journal of Computers vol. 8, no. 7, pp. 1677-1682, 2013.

General Information

ISSN: 1796-203X
Abbreviated Title: J.Comput.
Frequency: Bimonthly
Editor-in-Chief: Prof. Liansheng Tan
Executive Editor: Ms. Nina Lee
Abstracting/ Indexing: DBLP, EBSCO,  ProQuest, INSPEC, ULRICH's Periodicals Directory, WorldCat,etc
E-mail: jcp@iap.org
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