Graphics Applications White Papers
Attacks on Digital Watermarks: Classification, Estimation-based Attacks and Benchmarks
Overview Watermarking is a potential method for protection of ownership rights on digital audio, image and video data. Benchmarks are used to evaluate the performance of different watermarking algorithms. For image watermarking, the Stirmark package is the most popular benchmark, and the best current algorithms perform well against it. However, results obtained by the Stirmark benchmark have to be handled carefully since Stirmark does not properly model the watermarking process and consequently is limited in its potential for impairing sophisticated image watermarking schemes. In this context, the goal of this article is threefold. First, we give an overview of the current attacking methods. Second, we describe attacks exploiting knowledge about the statistics of the original data and the embedded watermark. We propose a stochastic formulation of estimation-based attacks. Such attacks consist of two main stages: a) watermark estimation; b) exploitation of the estimated watermark to trick watermark detection or create ownership ambiguity. The full strength of estimation-based attacks can be achieved by introducing additional noise, where the attacker tries to combine the estimated watermark and the additive noise to impair watermark communication as much as possible while fulfilling a quality constraint on the attacked data.
| Publisher | University of Geneva | File Format | PDF, requires Acrobat Rdr 5 |
|---|---|---|---|
| Date Published | August 2001 | Downloads | 32 |
| Format | White Papers | ||
| Topics | |||
-
Did you find this white paper useful?
White Paper RSSLive From Redmond: Animation in Silverlight
DownloadIn this webcast presenter will demonstrate the fundamentals of Animation; how to create Animation quickly and easily in Blend.
MVP TV - Scrum-Tastic Development With Visual Studio Team System and Light Weight Scrum
The presenter of this webcast covers the fundamentals of the Scrum development framework. Why more and more companies and teams are moving to Scrum and shows how joining the community-based...
MSDN Webcast: Create an Outlook-Like Web Mail Application in No Time With Visual WebGui AJAX and Silverlight (Level 100)
The presenter of this webcast creates a Microsoft Office Outlook-like Web mail application in no time using Visual WebGui, an open-source Asynchronous JavaScript and XML (AJAX) framework. The attendee will...
Live From Redmond: Creating Skinnable Custom Controls in Silverlight
The presenter of this webcast will explain how to create custom controls that are skinnable, including a full exploration of designing for the Parts & States Model.
MSDN Webcast: Troubleshooting Silverlight Data Access (Level 300)
Understanding data access in Microsoft Silverlight can be challenging, particularly if one learning to use Silverlight. The presenter examines the most common pitfalls developers face when getting started with Web...
/AMD_logo_gb-uk_60x40.jpg "Advanced Micro Devices (AMD)"){kind=logo}
