An Adaptive Reversible Image Watermarking Scheme Based on Integer Wavelet Coefficients

機構典藏 > College of Engineering > Graduate Institute & Department of Computer Science and Information Engineering > Journal Article > Item 987654321/92818

Please use this identifier to cite or link to this item: https://tkuir.lib.tku.edu.tw/dspace/handle/987654321/92818

Title:	An Adaptive Reversible Image Watermarking Scheme Based on Integer Wavelet Coefficients
Authors:	Chen, Chien-Chang;Jiun, Zeng-Chuang, Hsu, Chien-Hsiang
Contributors:	淡江大學資訊工程學系
Keywords:	Reversible image watermarking;integer wavelet transform;difference expansion;adaptive block size
Date:	2013-07-01
Issue Date:	2013-10-23 11:07:44 (UTC+8)
Publisher:	Academy Publisher
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 2LX2L, 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 higher capacity and quality ratio than previous works.
Relation:	Journal of Computers 8(7), pp.1677-1682
DOI:	10.4304/jcp.8.7.1677-1682
Appears in Collections:	[Graduate Institute & Department of Computer Science and Information Engineering] Journal Article

Files in This Item:

File	Size	Format
An Adaptive Reversible Image Watermarking.pdf	716Kb	Adobe PDF	462	View/Open
index.html	0Kb	HTML	223	View/Open
index.html	0Kb	HTML	144	View/Open