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:Pyramid Difference Reversible Image Watermarking Scheme
學年101
學期1
出版(發表)日期2012/08/01
作品名稱Pyramid Difference Reversible Image Watermarking Scheme
作品名稱(其他語言)
著者Chen, Chien-Chang
單位淡江大學資訊工程學系
出版者ICIC International
著錄名稱、卷期、頁數ICIC Express Letters 6(8), pp.2179-2184
摘要A reversible watermarking scheme extracts the embedded watermarks and then recovers the original image from the watermarked image. This study presents a reversible image watermarking scheme based on the proposed block centering difference method and the absolute histogram modulation method. The block centering difference method calculates the differences between pixels from the center to the outside of a 5x5 block. Thus, the absolute values of pixel differences are always restricted in a small range, so as that the number of peak value in the histogram of a 5x5 block is higher than that of the whole image. The modified absolute histogram modulation method embeds watermarks into both positive and negative differences in a 5x5 block. Experimental results indicate that the quality of watermarked image and the embedded capacity are good. Comparisons with other works demonstrate the excellent performance of the proposed scheme.
關鍵字Reversible watermarking; Block centering difference; Histogram modulation
語言英文
ISSN1881-803X
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
國別日本
公開徵稿
出版型式紙本
相關連結
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