教師資料查詢 | 類別: 期刊論文 | 教師: 陳建彰 Chen, Chien-chang (瀏覽個人網頁)

標題:An Adaptive Reversible Image Watermarking Scheme Based on Integer Wavelet Coefficients
學年101
學期2
出版(發表)日期2013/07/01
作品名稱An Adaptive Reversible Image Watermarking Scheme Based on Integer Wavelet Coefficients
作品名稱(其他語言)
著者Chen, Chien-Chang; Jiun, Zeng-Chuang, Hsu, Chien-Hsiang
單位淡江大學資訊工程學系
出版者Oulu: Academy Publisher
著錄名稱、卷期、頁數Journal of Computers 8(7), pp.1677-1682
摘要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.
關鍵字Reversible image watermarking;integer wavelet transform;difference expansion;adaptive block size
語言英文
ISSN1796-203X
期刊性質國外
收錄於EI;
產學合作
通訊作者Chen, Chien-Chang
審稿制度
國別芬蘭
公開徵稿
出版型式,紙本
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