digital watermark


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digital watermark

n.
A series of bits encoded in a digital media file, used to identify either the file itself, its owners, or licensed users. The bits are incorporated in such a way that common editing operations, like cropping, will not render the watermark unreadable.
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
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The feature can also be used to ensure that any documents shared by end users are always shared with a digital watermark that can be used to identify the end user sharing the document.
Osborne, "A digital watermark," in Proceedings of the IEEE International Conference Image Processing (ICIP '94), vol.
Using a smartphone app developed specifically for each brand, the consumer scans the packaging for a variety of identifying features such as image analysis, digital watermark, radio frequency identification (RFID) tags, and the like, which then appear in augmented reality.
For many years now, digital watermark was used to protect digital media and claim ownership.
For an 8-bit original image of size 256 x 256 (N = 256) and 8-bit digital watermark of size 64 x 64 (M = 64), 4 middle frequency coefficients in each of the 8 x 8 blocks from the host image are needed to embed the watermark.
The mockup of Apple's next-generation 5.5-inch handset includes design features, such as a dual-lens iSight camera and tweaked antenna lines, (http://appleinsider.com/articles/16/07/12/alleged-iphone-7-plus-mockup-includes-smart-connector-dual-lens-camera) Apple Insider reported , adding that the photos' authenticity couldn't be confirmed as multiple Weibo accounts shared them with their own digital watermark.
Inserting the hidden information into digital data for the purpose of proving the copyright is called a digital watermark [1].
Digital media can be reproduced easily and ownership demonstration in the form of digital watermark can serve the purpose of copyright protection.
(A digital watermark beneath the image suggested that it had been captured via Google Books.) Opposite this, a grid of four more images of the moon was printed on a column, which was also freestanding.
This is due to digital watermark's crucial features such as; imperceptibility, inseparability of the content from the watermark, and its intrinsic ability to undergo the same transformation experienced by the host signal.