標題: | Authentication and recovery for wavelet-based semifragile watermarking |
作者: | Tsai, Min-Jen Chien, Chih-Cheng 資訊管理與財務金融系 註:原資管所+財金所 Department of Information Management and Finance |
關鍵字: | authentication;digital right management;human vision system;semifragile watermarking;tamper detection;tamper recovery |
公開日期: | 1-六月-2008 |
摘要: | We propose a novel image authentication and recovery scheme based on discrete wavelet transform (DWT). By using the property of a DWT multiresolution structure, we generate a semifragile watermark from low-frequency bands and embed the recovery information into the high-frequency bands based on the human visual system (HVS) approach. The image authentication system is able to locate precisely any malicious alteration made to the image and restore the altered or destroyed regions based on the recovery mechanism. Therefore, the requirements of ownership protection and tampering detection of digital right management (DRM) are met, and the legal usage of digital content is available. In addition, robustness to mild modifications like JPEG compression and channel additive white Gaussian noise (AWGN) is also achieved with high recovery image quality. (C) 2008 Society of Photo-Optical Instrumentation Engineers. |
URI: | http://dx.doi.org/10.1117/1.2947580 http://hdl.handle.net/11536/8760 |
ISSN: | 0091-3286 |
DOI: | 10.1117/1.2947580 |
期刊: | OPTICAL ENGINEERING |
Volume: | 47 |
Issue: | 6 |
結束頁: | |
顯示於類別: | 期刊論文 |