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7418111 |
Methods and apparatus to process media
The presently claimed invention relates generally to digital watermarking, obtaining identifiers from media and/or processing media files. One claim recites a method including: accessing a target...
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7349555 |
Documents and apparatus to encode documents
The present invention relates generally to documents, e.g., such as legal tender, currency and identification documents, and apparatus for encoding documents. One claim recites: a physical document...
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7330564 |
Digital watermarking apparatus and methods
The present invention relates to various devices, including handheld devices. One claim recites a device including an image sensor including lenses, the lenses are arranged to create a pattern in...
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7330563 |
Documents, articles and authentication of documents and articles
The present invention relates generally to physical articles, e.g., such as documents, and authenticating physical articles. One claim recites a method of determining authenticity of an analog form...
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7266697 |
Stealthy audio watermarking
Described herein is audio watermarking technology for inserting and detecting watermarks in audio signals, such as a music clip. The watermark identifies the content producer, providing a signature...
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7254249 |
Embedding location data in video
Digital watermarking technology is used to convey location data for images or objects depicted in video. A digital watermark may associate geovector information with the video or object and areas...
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7249257 |
Digitally watermarked maps and signs and related navigational tools
Maps and signs are embedded with plural-bit data in the form of digital watermarks. In one embodiment, the plural-bit data includes location information with respect to a map. A handheld reading...
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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...
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7218753 |
Template for watermark decoder synchronization
Systems and methods are provided through which a template in the spatial domain is generated and combined with an image. Later, the combined image can be decoded to determine the extent of scaling...
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7206649 |
Audio watermarking with dual watermarks
A watermark encoding system encodes an audio signal with both a strong and a weak watermark. The strong watermark identifies the content producer and is designed to survive all typical kinds of...
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7197368 |
Audio watermarking with dual watermarks
A watermark encoding system encodes an audio signal with both a strong and a weak watermark. The strong watermark identifies the content producer and is designed to survive all typical kinds of...
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7197160 |
Geographic information systems using digital watermarks
The present invention relates to systems and methods for managing images and related information. In one implementation, geographic information system (GIS) layer information is registered or...
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7184572 |
Using steganographic encoded information with maps
A map depicts a plurality of different locations. Steganographic encoding is embebbed in first and second map areas. Steganographic encoding in each area conveys an identifier that is associated...
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7164780 |
Digital watermarking apparatus and methods
The present invention relates to various steganographic methods and apparatus. In one embodiment, a plurality of microlenses can provide a steganographic signal for a handheld device. The pattern...
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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.
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7139408 |
Transform domain watermarking of image signals
The invention provides methods and related systems for embedding and detecting watermarks in images, such as JPEG or MPEG formatted images as well as other types of image signals. One method...
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7116781 |
Counteracting geometric distortions in watermarking
A digital watermarking method receives multimedia data, such as images or audio, in compressed or uncompressed form, and extracts a digital watermark while counteracting geometric distortions. To...
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7099492 |
Method of steganographically embedding geo-location data in media
Digital watermarking technology is used in conjunction with map data, such as is acquired by satellite and other aerial sensors, and as may be generated from databases based on such aerial data....
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7098931 |
Image management system and methods using digital watermarks
Digital watermarking technology is used in an image management system. Images are uniquely identified by digital watermarks. The images are stored so as to be indexed according to their unique...
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7061510 |
Geo-referencing of aerial imagery using embedded image identifiers and cross-referenced data sets
Digital watermarking technology is used in conjunction with map data, such as is acquired by satellite and other aerial sensors, and as may be generated from databases based on such aerial data....
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7046819 |
Encoded reference signal for digital watermarks
This disclosure describes a method for encoding a digital watermark into an image signal that is robust to geometric distortion. The digital watermark is adapted to the host image signal in which...
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7042470 |
Using embedded steganographic identifiers in segmented areas of geographic images and characteristics corresponding to imagery data derived from aerial platforms
Digital watermarking technology is used in conjunction with map data, such as is acquired by satellite and other aerial sensors. The watermarks are used to track metadata, provide serialization and...
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7039214 |
Embedding watermark components during separate printing stages
The present invention relates to embedding a document with multiple watermark components at different printing stages. A document is preprinted to include a first digital watermark component. The...
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7024016 |
Digital watermarking apparatus and methods
The present invention relates to various digital watermarking methods and systems. In one embodiment, a handheld device displays a digitally watermarked ticket image at an event center. At the...
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7020285 |
Stealthy audio watermarking
Described herein is technology for inserting and detecting watermarks in signals, such as a music clip. In one described implementation, a watermarking system employs chess spread-spectrum...
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7006661 |
Digital watermarking systems and methods
The present invention relates to digital watermarking systems and methods. In a first implementation, so-called movie studio rough-cuts are watermarked to provide a forensic tracking clue or to...
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6993153 |
Self-orienting watermarks
A watermarking method converts a watermark message into a Frequency Shift Keying (FSK) signal and embeds the FSK signal in a host signal. The spectral properties of the FSK watermark signal...
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6993152 |
Hiding geo-location data through arrangement of objects
The present invention provides steganographic-embedding techniques. In one implementation a digital watermark signal is mapped to a set of spatial positions. Physical message objects are positioned...
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6975745 |
Synchronizing watermark detectors in geometrically distorted signals
A method of synchronizing a digital watermark detector divides a watermarked signal into blocks, each block including a portion of a watermark signal. For each block, the method computes a local...
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6975744 |
Detection of multiple watermarks and improved watermark calibration signals
Steganographic calibration signals (sometimes termed “orientation signals,” “marker signals,” reference signals,” “grid signals,” etc.) are sometimes included with digital...
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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,...
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6950519 |
Geographically watermarked imagery and methods
An image is digitally watermarked to convey position data about the subject of the image, such as latitude, longitude and elevation of a point depicted therein. Additional information, e.g., about...
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6904151 |
Method for the estimation and recovering of general affine transform
The present invention relates to the methods of estimation and recovering of general affine geometrical transformations which were applied to data, extensible to any other defined class of...
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6782509 |
Method and system for embedding information in document
A method and a system for embedding information in document data that include text written in a page description language. First, an analysis is made of the layout of the document data in which...
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6738744 |
Watermark detection via cardinality-scaled correlation
Described herein is an audio watermarking technology for detecting watermarks in audio signals, such as a music clip. The watermark identifies the content producer, providing a signature that is...
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6707926 |
Template for watermark decoder synchronization
Systems and methods are provided through which a template in the spatial domain is generated and combined with an image. Later, the combined image can be decoded to determine the extent of scaling...
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6704869 |
Extracting digital watermarks using logarithmic sampling and symmetrical attributes
A digital watermark reader performs a logarithmic sampling of a watermarked media signal to produce a sampled signal. It then analyzes the sampled signal to detect attributes associated with a...
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6700990 |
Digital watermark decoding method
To decode a digital watermark from an image notwithstanding geometrical corruption of the image (e.g., scale, rotation, etc.), a Fourier-Mellin transform is advantageously used. In a particular...
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6675140 |
Mellin-transform information extractor for vibration sources
The signal processing method includes the steps of: wavelet-transforming an input signal in a computer; and extracting features of the signal by Mellin-transforming the output of the wavelet...
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6664976 |
Image management system and methods using digital watermarks
Digital watermarking technology is used in an image management system. Images are identified by digital watermarks. The images are stored so as to be indexed according to their unique identifiers....
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6647128 |
Method for monitoring internet dissemination of image, video, and/or audio files
An automated monitoring service downloads image files (including, e.g., graphic and video files) and audio files from various Internet sites, and checks these files for the presence of embedded...
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6510233 |
Electronic watermark insertion device
The present invention relates to an electronic watermark burying device that does not bury the same electronic watermark data in a superimposing mode. An electronic watermark insertion device...
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