BACKGROUND Digital Watermarking is a process for modifying physical or electronic media
to embed a machine-readable code into the media, particularly for information security and …

BACKGROUND Digital watermarking is a process for modifying physical or electronic media
to embed a machine-readable code into the media. The media may be modified such that …

BACKGROUND Digital watermarking is a process for modifying physical or electronic media
content to embed a hidden machine readable code into the media. In digital watermarking, a …

Over the last few years, there has been a growing demand for digital content. In
general,“digital content” is data that is perceived during display or playback (eg, a still …

(57) ABSTRACT A method is provided for authenticating a media signal and related
Software, Systems and applications. A digital water mark is embedded in the media signal. A …

A watermark can be viewed as an information signal that is embedded in a host signal. Such
as an image, audio, or some other media content. Watermarking systems based on the …

A watermark can be viewed as an information signal that is embedded in a host signal. Such
as an image, audio, or some other media content. Watermarking systems based on the …

A digital watermark detection method exploits autocorrelation properties of the watermarked
signal that enable synchronization of the digital watermark despite temporal or geometric …

A watermark embedder transforms a media signal from its perceptual domain to frequency
domain regions and embeds a hash of data from one frequency domain region into a …

US7152021B2 - Computing distortion of media signals embedded data with repetitive structure
and log-polar mapping - Google Patents US7152021B2 - Computing distortion of media signals …