Matches 1 - 30 out of 30
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7400743 Methods to evaluate images, video and documents  
The present invention relates generally to steganographic encoding and/or digital watermarking. In one embodiment, a method is provided including: obtaining an image or video; encoding a first...
7389420 Content authentication and recovery using digital watermarks  
The disclosure describes methods for using digital watermarking to authenticate digital media signals, such as images, audio and video signals. It also describes techniques for using embedded...
7321667 Data hiding through arrangement of objects  
The present invention provides steganographic embedding techniques. A digital watermark signal is reduced to a set of spatial positions. The set of spatial positions sufficiently conveys the...
7266217 Multiple watermarks in content  
Image, video, and/or audio data is encoded with at least first and second watermarks. In one implementation a method includes: receiving content; embedding a first watermark signal in the content;...
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...
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...
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...
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...
7171020 Method for utilizing fragile watermark for enhanced security  
A fragile watermark is embedded in a document. The fragile watermark provides enhance security. In one implementation, a method is provided for embedding information in an image so that the image...
7113613 Watermark information detection method  
A digital watermark information detection method for detecting information inserted as a digital watermark from contents has a step of converting the contents into a predetermined specified format...
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....
7092546 Digital watermarking technique  
A watermarking system allowing both sufficiently high quality of watermarked moving pictures and enhanced ease of watermark detection is disclosed. A watermark level of a watermark to be embedded...
7054462 Inferring object status based on detected watermark data  
Image, video, or audio data is encoded with both a frail and a robust watermark. The two watermarks respond differently to different forms of processing (e.g., copying the object may render the...
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...
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...
6970575 Method of extracting digital watermark information and method of judging bit value of digital watermark information  
A digital watermark information is extracted from geometrically deformed image without using a calibrating digital watermark. Pixel data at positions predetermined in an X-Y coordinate used when...
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...
6891959 Hiding information out-of-phase in color channels  
The present invention relates to steganographically hiding images and information. In a preferred embodiment, an image is hidden within a media signal. The media preferably includes a cyan (C)...
6879703 Method and apparatus for watermarking images  
Digital watermarks are embedded in image data ( 102 )in order to enable authentication of the image data and/or replacement of rejected portions of the image data. Authentication codes are derived...
6864811 Method and system for embedding date information in computer-generated digits  
A method and system for creating a permanent and authentic history of a computer generated numerical digit enables one to track digit's life path. The method comprises embedding each digit with a...
6850626 Methods employing multiple watermarks  
Image, video, or audio data is encoded with both a frail and a robust watermark. The two watermarks respond differently to different forms of processing (e.g., copying the object may render the...
6826290 Image processing apparatus and method and storage medium  
To provide a variety of methods for extracting digital watermark information from an image as correctly as possible. For example, a first pattern arrangement and a second pattern arrangement which...
6804376 Equipment employing watermark-based authentication function  
Image, video, or audio data is encoded with both a frail and a robust watermark. The two watermarks respond differently to different forms of processing (e.g., copying the object may render the...
6798893 Digital watermarking technique  
A watermarking system allowing both sufficiently high quality of watermarked moving pictures and enhanced ease of watermark detection is disclosed. A watermark level of a watermark to be embedded...
6763123 Detection of out-of-phase low visibility watermarks  
The present invention relates to detecting digital watermarks. In a preferred embodiment, media is embedded with a digital watermark component. The media includes a cyan color plane, a magenta...
6744906 Methods and systems using multiple watermarks  
Two or more digital watermarks, with different characteristics, are embedded in a document. The characteristics are chosen so that the watermarks will be affected in different manners if the...
6707927 Steganographic system, method, program and storage medium therefor  
There is provided a steganographic system which can dispense with an original image during extraction of watermark by determining a position at which an optimum space dependent physical quantity is...
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...
6650763 Method of extracting digital watermark information and method of judging bit value of digital watermark information  
A digital watermark information is extracted from geometrically deformed image without using a calibrating digital watermark. Pixel data at positions predetermined in an X-Y coordinate used when...
6577745 Watermark detection  
An input image is distorted so that it has less correlation to a watermark and the distorted image is subtracted from the input image to provide a preprocessed image. If the correlation between the...
Matches 1 - 30 out of 30