BACKGROUND 0002 Against malicious purposes and for many other rea Sons, there is a
need to secure the access to electronically stored images or photos (ie the information …

The present invention relates to a method for embedding and detecting a watermark where
a forgery/alternation of an image can be identified and the location of forgery/alternation can …

An open digital watermark system and methodology having various features for unifying
watermark production and processing among diverse user multimedia terminals (112), such …

BACKGROUND With the widespread use of digitally stored material in recent years, Such as
on Internet databases and portable Storage media as digital video discs (DVDs), copyright …

An increasing number of people are employing a variety of methods of editing and
processing digital content in an effort to illegally copy the content. It is difficult to develop …

(57) ABSTRACT A method for distributing a digital image content, including a modification
stage of an original digital image content by modifying at least a part of digital image data …

In order to decode a received digital signal which has been watermarked with a known
watermark, at least part of the digital signal is decoded by using a parametrisable iterative …

In one embodiment of the present invention, digital audio content is analyzed with respect to
specific compression/decompression algorithms to identify watermark modifica tion points …

BACKGROUND 0002 Stemmed from traditional cryptography, the requirements for
preventing two kinds of frauds are usually expected for the purposes of content-based …

A system for placing a visible" watermark" on a digital image is disclosed, wherein an image
of the watermark is combined with the digital image. The pixels of the watermark image are …