Watermark

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Watermark

An image in a piece of paper that may be seen more clearly when it is held up to light. This is used in printing some money and passports to prevent counterfeiting. For example, if one holds a $20 American bill up to light, one would see a watermark of Andrew Jackson's face.
Farlex Financial Dictionary. © 2012 Farlex, Inc. All Rights Reserved
References in periodicals archive ?
However, even with the embedding of the digital watermark, the owner can deny ownership of the digital image.
PHISHCUT embeds digital watermarks into websites used by financial institutions as well as internet banking and shopping sites.
The embedded marks are generally invisible (or imperceptible) but can be detected or extracted through computing operations and is why they are called "digital watermarks." The watermarks are bound to and hidden in the source data, becoming inseparable from that data (such as images and audio and video clips) so they can survive operations that do not degrade the data beyond its utility value in the intended applications.
In just two months, Adobe announced it would integrate the digital watermark software into Version 4.0 of Adobe Photoshop.
A digital watermark is called imperceptible if the original cover signal and the marked signal are perceptually indistinguishable.
Osborne (1994) A digital watermark, IEEE International Conference on Image Processing, Vol.
On the consumer side the necessary hardware components include a mobile device (smartphone, tablet, etc.) with software for authentication of digital watermark along with the QR- code.
Using the Genie app, available for free on the iTunes App Store and Google Play, readers simply point their smartphone's camera at the enhanced content and the imperceptible digital watermark embedded in the page is automatically detected triggering the associated interactive experience.
A less common DRM method is called Digital Watermark. The proliferation of digitized media is creating a pressing need for the purpose of copyright protection, data exchange over the internet is data authentication and broadcast monitoring etc.
A digital watermark is a digital signal or a pattern embedded into the host media to be protected, such as an image or audio or video.
In a closed system in which the multimedia content needs special hardware for copying and viewing, a digital watermark can be inserted to indicate the number of copies permitted.
In recent years, digital watermark techniques have been extensively exploited and regarded as a potentially effective solution against illegal reproduction or theft of multimedia contents [1].