Title :
A novel algorithm for improving image content authentication and localization accuracy
Author :
Gui-Duo Duan ; Xi Zhao ; Ho, Anthony T. S.
Author_Institution :
Sch. of Comput. Sci. & Eng., Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
A novel semi-fragile algorithm using the wavelet-based contourlet transform (WBCT) is proposed in the paper. In the WBCT domain, the original image is first decomposed into a low-pass subband and several directional subbands. The watermark is embedded into the directional subbands. The embedding technique is based on the modulated parent-children energy relationship which has semi-fragile characteristics. Both the false alarm and missed detection rate (MDR) are used to evaluate the performance of our scheme. Simulation results showed that our proposed method can localize the malicious tampered region with high accuracy.
Keywords :
image watermarking; message authentication; performance evaluation; wavelet transforms; MDR; WBCT domain; directional band; embedding technique; false alarm; image content authentication accuracy; image content localization accuracy; image decomposition; low-pass sub; malicious tampered region localization; missed detection rate; modulated parent-children energy relationship; performance evaluation; semifragile algorithm; semifragile characteristics; watermark; wavelet-based contourlet transform; Abstracts; Boats; Modulation; Noise; Transform coding; Semi-fragile watermarking; image authentication; wavelet-based contourlet transform;
Conference_Titel :
Wavelet Active Media Technology and Information Processing (ICWAMTIP), 2012 International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4673-1684-2
DOI :
10.1109/ICWAMTIP.2012.6413441
