Efficient Video Authentication for H.264/AVC
Zhang, Jing and Ho, Anthony T. S. (2006) Efficient Video Authentication for H.264/AVC In: First International Conference on Innovative Computing, Information and Control - Volume I (ICICIC'06).
Traffic image sequences are important information for the purpose of traffic system control and traffic accidents surveillance, for example, the determination of offending vehicles. A semi-fragile watermarking method for the automatic authentication and restoration of traffic images using irregular sampling is described. Watermarks are embedded into the pinned field of the pinned sine transform (PST) of the original image, which reflects local malicious tampering on the texture of the image. When tampered blocks are detected, the restoration problem is formulated as an irregular sampling problem in approximation subspaces. These blocks are then reconstructed, making use of the information embedded in the same watermarked image, through iterative projections onto convex sets in approximation subspaces. The restoration process is a variant of the Papoulis- Gerchberg algorithm, and is robust to common image processing operations such as lossy transcoding and image filtering.
|Item Type:||Conference or Workshop Item (UNSPECIFIED)|
|Additional Information:||In Proceedings of the First International Conference on Innovative Computing, Information and Control, 2006 (ICICIC '06). , Vol. 3, pp. 46-49.© 2006 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.|
|Divisions:||Faculty of Engineering and Physical Sciences > Computing Science|
|Depositing User:||Mr Adam Field|
|Date Deposited:||27 May 2010 14:46|
|Last Modified:||23 Sep 2013 18:35|
Actions (login required)
Downloads per month over past year