He now adds a digital watermark to his photographs to discourage this.

The needed properties of a digital watermark depend on the use case in which it is applied.

Digital watermarks are features of media that are added during production or distribution.

Its digital watermarks are designed not to be perceptible to the humaneye.

Thus, digital watermarks are not intended to increase commerce on computer networks, or even to prevent copying.

The digital watermark, imperceptible to the eye, can be tracked on the Web even if the picture has been modified.

So it is no surprise, as information becomes currency in the global economy, that so-called digital watermark technologies are beginning to appear.

It instead detects a digital watermark embedded in the images, developed by Digimarc.

A digital watermark is called robust if it resists a designated class of transformations.

A digital watermark that is perceptual, on the other hand, is imperceptible.

Because she got a screener copy, it had a digital watermark in it.

In some scenarios, a digital watermark is added to a piece of media such as an image, film, or audio clip, to prove its authenticity.

A digital watermark is called fragile if it fails to be detectable after the slightest modification.

Encoding an identifying code into digitized music, video, picture, or other file is known as a digital watermark.

A digital watermark is called perceptible if its presence in the marked signal is noticeable.

Techniques from the field are being used to create digital watermarks in the industry's effort to protect digital music against copyright violations.

For the perceptibility of digital watermarks, see Digital watermarking.

Digital watermarks involve data that is arguably steganographically embedded within the audio or video data.

A digital watermark is a kind of marker covertly embedded in a noise-tolerant signal such as audio or image data.

In Michigan, the digital information even includes what is known as a "digital watermark," so any tampering will be detectable.

If a digital watermark distorts the carrier signal in a way that it becomes perceivable, it is of no use.

Within 18 months, the companies also intend to start encoding each CD sold in a store with similar technology, known generically as a digital watermark.

Digital watermarks can be added to image or video files, so that the information contained in the file can be identified and copyright protected.

Digital watermarks and other signature technology will not work as copy-protection schemes (copies are super-conducting liquids, remember?)

Some content publishers therefore embed digital watermarks in their media files, sometimes charging users to receive unmarked copies for legitimate use.