Inventor: Adnan M. Alattar

Address: Tigard, OR
No. of patents: 23
Last patent issue date: 05/29/2012

Number	Title	Issue Date
8190901	Layered security in digital watermarking A media object authentication system uses layers of security features based on digital watermarks embedded in media objects. The system generates a first digital watermark with a message payload carrying data about the object, such as a hash of text data printed on ...	05/29/2012
8175329	Authentication of physical and electronic media objects using digital watermarks Digital watermark methods for encoding auxiliary data into a host signal are used to authenticate physical and electronic objects. One such method computes a content specific message dependent on the host signal, encodes the content specific message into a watermark...	05/08/2012
8150096	Video fingerprinting to identify video content A method of video fingerprinting computes statistics for video frames and forms a fingerprint used to identify the video as a change in the statistics over the video frames. Another method of video fingerprinting computes values representing motion between different...	04/03/2012
8098883	Watermarking of data invariant to distortion A data set is transformed to a domain in which values are robust to distortion. The values are then expanded to carry auxiliary data. To recover the data, the data set is transformed into the domain, further transformed to get a set of possibly expanded data, and th...	01/17/2012
8014557	Watermarking electronic text documents A text watermarking method embeds an auxiliary message in an original electronic text document to form a watermarked text document. The method applies a spreading function to message symbols to spread the symbols over a carrier, which forms a modulated carrier. It m...	09/06/2011
7974495	Identification and protection of video The present invention provides methods and apparatus that are helpful for identifying or protecting video. One claim recites a method including: receiving data representing picture elements of video; transforming the data into a frequency domain; comparing character...	07/05/2011
7822225	Authentication of physical and electronic media objects using digital watermarks A content watermarking method derives a watermark key from data representing content. In one particular method, a plural symbol message is algorithmically transformed in dependence on the derived watermark key. In another arrangement, the key specifies how or where ...	10/26/2010
7599518	Reversible watermarking using expansion, rate control and iterative embedding Reversible watermarking methods enable auxiliary data to be embedded in data sets, such as images, audio, video and software. The reversible nature of the method enables the original data set to be perfectly restored. Control systems with feedback loops are used to ...	10/06/2009
7570784	Identification and protection of security documents The present invention provides methods and systems that are helpful for authenticating or protecting physical and electronic documents like financial documents and identification documents. One claim recites a method including: receiving digital data corresponding t...	08/04/2009
7567721	Digital watermarking of low bit rate video Methods for embedding digital watermarks in compressed video include perceptual adapting a digital watermark in predicted and non-predicted data based on block activity derived from the compressed video stream, embedding in predicted objects in a video stream having...	07/28/2009
7529647	Computing distortion of media signals using embedded data with repetitive structure and log-polar mapping A digital watermark detection method uses a matched filtering technique on a log polar re-mapping of a watermarked signal to detect peaks associated with a repetitive structure of a watermark. ...	05/05/2009
7427334	Method and apparatus for encoding substrates with information The present invention provides methods and apparatus to encode substrates (e.g., paper, synthetics, etc.) with information. In one implementation a method is provided including: receiving data that corresponds to a two-dimensional signal that encodes plural bits of ...	09/23/2008
7424131	Authentication of physical and electronic media objects using digital watermarks Digital watermark methods for encoding auxiliary data into a host signal are used to authenticate physical and electronic objects. One such method computes a content specific message dependent on the host signal, encodes the content specific message into a watermark...	09/09/2008
7319775	Wavelet domain watermarks A wavelet domain watermark encoder and decoder embed and detect auxiliary signals in a media signal, such as a still image, video or audio signal. A watermark orientation signal is embedded in a wavelet decomposed signal to facilitate detection of the watermark in a...	01/15/2008
7239734	Authentication of identification documents and banknotes The present invention provides methods and systems that are helpful authentication of physical and electronic documents like financial documents and identification documents. Steganographic indicia plays a role in some of our implementations. In other implementation...	07/03/2007
7152021	Computing distortion of media signals embedded data with repetitive structure and log-polar mapping A digital watermark detection method uses a matched filtering technique on a log polar re-mapping of a watermarked signal to detect peaks associated with a repetitive structure of a watermark. ...	12/19/2006
7050201	Method and apparatus for encoding paper with information Paper is textured with a pattern that yields a known signature signal when transformed to the frequency domain. This signature can be used for various purposes, including determining the angular orientation of the paper when scanned, conveying a plural-bit digital w...	05/23/2006
7020304	Digital watermarking and fingerprinting including synchronization, layering, version control, and compressed embedding This disclosure describes several video watermarking and fingerprinting enhancements. These enhancements include synchronizing watermark detectors with one-dimensional calibration signals, layering digital watermarks, watermarks for version control, compressed domai...	03/28/2006
7006662	Reversible watermarking using expansion, rate control and iterative embedding Reversible watermarking methods enable auxiliary data to be embedded in data sets, such as images, audio, video and software. The reversible nature of the method enables the original data set to be perfectly restored. Control systems with feedback loops are used to ...	02/28/2006
6978036	Tamper-resistant authentication techniques for identification documents The present invention provides techniques that are helpful in resolving the authentication of an identification document or banknote. The document or banknote includes a security enhancer. The enhancer can be a graphic or artwork design, or can be realized with line...	12/20/2005
6959098	Method and system for determining image transformation A watermark decoding method makes use of a line-finding algorithm (e.g., the Radon transform) to determine rotation of an image from an initial orientation. Once rotation has been characterized, differential scaling of the image can readily be determined. ...	10/25/2005
6608919	Method and apparatus for encoding paper with information Paper is textured with a pattern that yields a known signature signal when transformed to the frequency domain. This signature can be used for various purposes, including determining the angular orientation of the paper when scanned, conveying a plural-bi...	08/19/2003
6385329	Wavelet domain watermarks A wavelet domain watermark encoder and decoder embed and detect auxiliary signals in a media signal, such as a still image, video or audio signal. A watermark orientation signal is embedded in a wavelet decomposed signal to facilitate detection of the wat...	05/07/2002

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Inventor: Adnan M. Alattar