標題: A wavelet-based semi-fragile watermarking with recovery mechanism
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: semi-fragile;tamper detection;tamper recovery copyright protection;wavelet
公開日期: 2008
摘要: This paper studied the wavelet transformation based watermarking tamper detection and recovery scheme. By the property of discrete wavelet transform, we design the semi-fragile watermark from low-frequency band and embedding the watermark into the high-frequency band by the help of Human Visual System (HVS). The watermarked image still preserves high image quality after the embedding of the semi-fragile watermark and the image authentication system is able to locate precisely any malicious alteration made to the image. Our novel design can restore the altered or destroyed regions from the attacked images and allow the users to know what the original content was in the manipulated areas. We also analyze the robustness for mild modification like JPEG compression and channel additive white Gaussian noise (AWGN) and fragility to malicious attack. In summary, this scheme can resist the mild modifications of digital image and be able to detect the malicious modifications precisely.
URI: http://hdl.handle.net/11536/31131
ISBN: 978-1-4244-2078-0
ISSN: 0271-4302
期刊: PROCEEDINGS OF 2008 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS 1-10
起始頁: 3033
結束頁: 3036
顯示於類別:會議論文