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7617398 |
Derivation and quantization of robust non-local characteristics for blind watermarking
An implementation of a technology is described herein for deriving robust non-local characteristics and quantizing such characteristics for blind watermarking of a digital good.
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7616764 |
Online data encryption and decryption
Systems and methods for providing encryption and decryption of data transmitted on a computer implemented network, preferably user authentication identifier data, such as a password, at the point...
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7615735 |
Random number generation using a scattering waveguide
The present invention provides a method and apparatus for random number generation using a scattering waveguide. The apparatus includes a light source for providing coherent light and a scattering...
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7606388 |
Contents border detection apparatus, monitoring method, and contents location detection method and program and storage medium therefor
A contents border detection apparatus and monitoring method. The apparatus comprises a digital watermark detector for detecting a digital watermark embedded in contents for which a time element is...
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7590239 |
Object identifying medium using multi-layer thin-film
A discrimination medium for objects by which counterfeiting can be prevented, authenticity of the article can be easily and reliably determined, and the production cost can be reduced is provided....
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7561716 |
Watermarking method and apparatus
The invention provides a method and apparatus for watermarking a document, the method comprising: associating the document with an identification number; generating ( 70 ) a first set of numbers...
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7555650 |
Techniques for reducing the computational cost of embedding information in digital representations
The computational cost of embedding information in a digital representation is reduced by making a set of at least two copies of the digital representation and altering subdivisions of the copies...
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7555647 |
Encoding device, decoding device, encoding method, decoding method, and program therefor
An encoding device to encode an object image to be encoded includes a reference information generating unit that generates reference information with respect to a key image different from the...
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7555129 |
Content playback apparatus, content playback method, and program
A content playback apparatus prevents related content recorded on separate media that make up a virtual package from being played separately, thereby restricting playback of the content to only...
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7549052 |
Generating and matching hashes of multimedia content
Hashes are short summaries or signatures of data files which can be used to identify the file. Hashing multimedia content (audio, video, images) is difficult because the hash of original content...
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7545541 |
Systems and methods for embedding metadata in a color measurement target
Systems and methods for utilizing metadata embedded in a color measurement target to uniquely identify the target through color measurement. A color measurement target is used for color...
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7543154 |
Method and device for determining an access code
A method for determining an access code comprising a predetermined number of input symbols. The access code is determined from input symbols and the position thereof when inputted. The number of...
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7542584 |
Image processing method, image processing apparatus, program and recording medium that can reduce image quality degradation
An image processing method includes the steps of: dividing digital content into run-lengths each including one or more consecutive pixels having an identical color; and embedding digital watermark...
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7532740 |
Method and apparatus for embedding auxiliary information within original data
This patent application is generally related to watermarking and steganography. In one implementation, a method of embedding auxiliary information within original data is provided. The original...
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7512237 |
Encryption for optical communications using dynamic subcarrier multiplexing
A multiplexing technique for optical communications used to create a pseudo-random communications signal in the optical domain such that only the sender and/or receiver can decode the signal. The...
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7508939 |
Image processing system and method for processing image data using the system
In an image processing system according to the present invention, a first device encrypts image data generated by reading an image in a document, stores a decryption key for decrypting the image...
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7496209 |
Techniques and systems for embedding and detecting watermarks in digital data
A method for embedding and detecting watermarks in digital data. Data is analysed by an independent component analysis to derive a transform matrix W encoding properties of the data. The data is...
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7489798 |
Method and apparatus for detecting a watermark in a signal
The invention relates to a system for detecting a watermark using informed detection. A first signal potentially having a watermark embedded is received ( 601 ) as is a second signal corresponding...
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7489797 |
Method and apparatus for fragile watermarking
A method of fragile watermarking is characterized by the step of generating at least a first ill-conditioned operator, said ill-conditioned operator being related to values extracted from an image...
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7487355 |
Data processing apparatus and method
A watermarking system comprises an encoding data processor operable to generate at least one marked version of an original item of material by introducing one of a predetermined set of code words...
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7471806 |
Method, apparatus and computer program for inserting a watermarking program into an image processing program
At every reproduction of a moving image, a tamper resistant module (TRM) randomly selects any one of plural electronic watermark inserting modules, and incorporates the module selected into an area...
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7461255 |
Digital watermark processing apparatus, and digital contents distribution system using the apparatus
This invention has as its object to provide a digital watermark processing apparatus, which can embed a digital watermark while minimizing quality deterioration of objective contents. The image...
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7447312 |
Method and apparatus for secure ultrafast communication
The present invention describes an ultrafast secure data communication system that can link remote users to an encrypted database with holographic-stored data and a high security and ultrafast...
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7440584 |
System and method for marking data and document distribution
Systems and methods are provided through which marks are generated for combination with a host image, in which source or user information is encoded into the mark either as a visually perceptibly...
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7411702 |
Method, apparatus, and computer program product for embedding digital watermark, and method, apparatus, and computer program product for extracting digital watermark
A method for embedding a digital watermark includes a step of inputting digital watermark information; a step of inputting an image; a step of dividing the image into a plurality of areas; a step...
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7397928 |
Insertion and extraction of a message in an image
The invention concerns a method of inserting a message in an image, the message comprising binary symbols which are each referenced by an index, characterized in that it comprises, for a...
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7391529 |
Apparatus and method for managing and using reusable document components during the process of dynamic document construction
An apparatus ( 10 ) for processing documents each represented by a document description ( 12 ) encoded in a page description language supportive of reusable data includes a page description...
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7389421 |
Countermeasure against estimation-based attacks of spread-spectrum watermarks
Described herein is a technology for facilitating watermark detection. Spread-spectrum watermarking is a commonly employed technique for hiding data in digital goods (e.g., multimedia signals)....
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7386149 |
Method and apparatus for embedding digital-watermark using robustness parameter
An apparatus receives a document image and digital-watermark information and determines an embedding capacity based on a number of the letters in the document image. The apparatus determines...
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7372965 |
Electric circuit management method and device
The invention proposes a method of managing an electronic circuit of the type comprising a memory (EEPROM) for the storage of confidential information, the method comprising masking variations of...
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7369659 |
Item handling system
An item handling system, comprising: at least one item preparation station for printing machine-readable symbols on items; and at least one item handling station for receiving items from the at...
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7366301 |
Optical watermark
A multiple-layered watermark is generated to be placed on document, to protect against counterfeiting and forgery. Hidden information embedded into each of the watermark's layers is only detectable...
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7362860 |
Image data encryption method, image data transform method, apparatus for the methods, computer program, and computer-readable storage medium
This invention allows the encryption side to set whether an image playback apparatus should play back image data in a scrambled state or a non-scrambled state. When a code-block of input image data...
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7343024 |
Embedding data in material
The present invention relates to embedding data in material. Material means one or more of video material, audio material and data material. Video material in this context may be still images or...
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7333628 |
Data embedding with multi-level screening
Digital data is rapidly embedded in color/grayscale digital data by switching between a set of multi-level screens or quantizers. Each screen can be tuned to maximize the quality of the digital...
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7330974 |
Method and system for delivery of a secure document
A method and system for issuing secure documentation, such as tickets or coupons. The method includes producing a secure document having printed information and coded data thereon, the coded data...
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7315621 |
Digital watermark-embedding apparatus, digital watermark-embedding method, and recording medium
A characteristic amount is retained and calculated from an entered video signal. Embedment intensity is retained and calculated from the retained characteristic amount. Embedment information is...
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7305089 |
Picture taking apparatus and method of controlling same
The camera includes a sensor for sensing the photographer's iris image and registering the image in advance. The iris image is recorded in the image of a subject by a digital MCU at a timing...
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7302162 |
Modulation of a video signal with an impairment signal to increase the video signal masked threshold
An impairment signal is introduced into an original visual signal, either electronically or optically, that is not noticeable in a display of the original visual signal but is noticeable in a copy...
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7302078 |
Apparatus and method for preventing illegal distribution of digital contents by using a fingerprinting technique
An apparatus and method for preventing illegitimate distribution of digital contents on Internet obtains a first wavelet image having a user information-embedding region by performing a wavelet...
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7295678 |
Method for inserting binary messages in a digital image
A method and a system for inserting at least one binary code in a digital image, including converting the code into a modification of contours of objects in the image.
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7286684 |
Secure document design carrying auxiliary machine readable information
A two dimensional pattern design for secure documents serves as both a machine readable code and an aesthetic part of the documents' design. A method for generating the design generates a variable...
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7277557 |
Image processing apparatus, image processing method, and storage medium of image processing program
A pattern generating section forms two patterns based on a pattern size, an embedding strength, and a pattern attenuation ratio. When corresponding pixels in two patterns are added to each other,...
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7231067 |
Method for printing and verifying authentication documents
A system and method for printing images for use in an authentication document from a plurality of different printers and/or capture devices. Each of the plurality of different printers and/or...
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7231049 |
Electronic mailing system
An electronic mail system and method in which a message receiver creates an envelope containing envelope media data that is hidden with an embedding-and-extracting key. The message sender acquires...
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7227972 |
Progressive watermark decoding on a distributed computing platform
The disclosure describes a method of progressively decoding a digital watermark on a distributed computing platform. A client device equipped with a digital camera, such as a PDA or cell phone,...
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7222235 |
Image processing system utilizing digital watermarks in predetermined regions
An image processing system comprises an image providing apparatus which provides an image file, from which a digital watermark information can be extracted by using a watermark key that includes an...
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7221760 |
Information security using digital holography
A method and system for encrypting multi-dimensional information utilizing digital holography is presented. A phase-shifting interferometer records the phase and amplitude information generated by...
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7221759 |
Projector with enhanced security camcorder defeat
A projector ( 10 ) with enhanced security camcorder defeat including a copy protection illumination system ( 1 ) for illuminating a spatial light modulator ( 30 ) comprises: a polychromatic light...
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7209572 |
Digital watermark embedding apparatus, digital watermark extraction apparatus, and methods thereof
A document image undergoes document analysis to obtain circumscribing rectangles of characters (S 601 ), and two distances between non-neighboring circumscribing rectangles from the head of the...
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