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請使用永久網址來引用或連結此文件:
https://irlib.pccu.edu.tw/handle/987654321/35898
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| 題名: | Image tamper detection and recovery using adaptive embedding rules |
| 作者: | Hsu, CS (Hsu, Ching-Sheng)
Tu, SF (Tu, Shu-Fen) |
| 貢獻者: | 資管系 |
| 關鍵詞: | Digital watermarking
Fragile watermarking
Image authentication
Tamper detection |
| 日期: | 2016-06 |
| 上傳時間: | 2017-04-13 14:40:59 (UTC+8) |
| 摘要: | Many image tamper detection methods implement authentication and recovery in units of blocks; however, these methods do not consider the characteristics of blocks to distinguish watermark embedding and detection modes, thus resulting in poor hiding effects. We suggest that embedding an excessive number of bits within a region with only a slight change in an image to record recovery information is unnecessary. In addition, more recovery information is required in a region with major changes to improve recovery quality. Therefore, this study used smoothness to distinguish the types of image blocks, and employ different watermark embedding, tamper detection, and recovery strategies for different block types to enhance hiding efficiency, authentication, and recovery effects. The experimental results regarding the authentication error rate and image quality showed that the proposed scheme has satisfactory performance. (C) 2016 Elsevier Ltd. All rights reserved. |
| 關聯: | MEASUREMENT 卷: 88 頁碼: 287-296 |
| 顯示於類別: | [資訊管理學系暨資訊管理研究所 ] 期刊論文
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