| 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 | en |
| ISSN | 1881-803X |
| 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 | 是 |
| 國別 | JPN |
| 公開徵稿 | |
| 出版型式 | 紙本 |
| 相關連結 |
機構典藏連結 ( http://tkuir.lib.tku.edu.tw:8080/dspace/handle/987654321/78537 ) |
| SDGS | 優質教育,尊嚴就業與經濟發展,產業創新與基礎設施 |
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