Information processing device

Information processing device

Covert document system

Image data processing

Print controlling program and print system for transparent-printing second print data in superposition on first print data

Watermark information detection method

Watermarking

Digital watermarking system according to background image pixel brightness value and digital watermarking method

Digitally printed anti-copy document and processes and products therefor

Encoding device, decoding device, encoding method, decoding method, and storage medium storing programs thereof

System and method for data hiding using inter-word space modulation

Embedding computer information into printed media and process method thereof

Embedding data into document and extracting embedded data from document

Methods and systems for inserting watermarks in digital signals

Methods and apparatus for enhancing the robustness of watermark extraction from digital host content

Security enhancements of digital watermarks for multi-media content

Watermark information embedding device and method, watermark information detecting device and method, watermarked document

Digital watermark and steganographic decoding

Translation device, translation method, and storage medium

Image processing apparatus and image forming apparatus

Digital watermark embedding method, digital watermark embedding apparatus, and storage medium storing a digital watermark embedding program

Digital watermark embedding method, digital watermark embedding apparatus, and storage medium storing a digital watermark embedding program

System and method for applying watermarks

Method and system for managing and controlling electronic media

Apparatus and methods for inserting and detecting electronic watermark

Methods and devices responsive to ambient audio

Authentication of identification documents

Method of watermark with hybrid halftone dots

Raising detectability of additonal data in a media signal having few frequency components

Image processing apparatus, image processing method, and print product

Physical objects and validation of physical objects

Safety marking

Integrating digital watermarks in multimedia content

Registering with computer systems

Method for robust asymmetric modulation spatial marking with spatial sub-sampling

Steganographic method

Watermarking different areas of digital images with different intensities

Internet linking from audio and image content

On-demand printing of coding patterns

Video steganography

Steganographically encoded video, deriving or calculating identifiers from video, and related methods

Conjugate cluster screens for embedding digital watermarks into printed halftone documents

Methods for providing encoded visual borders on a scannable document

System and method for marking data and document distribution

Methods for audio watermarking and decoding

Method and apparatus for generating and printing a security stamp with custom logo on an electrophotographic printer

Hiding and detecting messages in media signals

Character and vector graphics watermark for structured electronic documents security

Encoding invisible electronic information in a printed document

Encoding invisible electronic information in a printed document

Hierarchical watermark detector

Data processing method and apparatus

Systems and methods for digital content security

Methods and apparatus for hiding data in halftone images

Systems and methods for authenticating objects using multiple-level image encoding and decoding

Image processing apparatus, image processing method, computer program and computer readable storage medium

Securing media content with steganographic encoding

Coding apparatus and method, decoding apparatus and method, data processing system, storage medium, and signal

Associating media through encoding

Methods for steganographic encoding media

Methods and arrangements employing digital content items

System and method for variable text overlay

System and method for stored resource overlay

Image processing method

Decoding hidden data from imagery

Encoding hidden data

Method of incorporating a secondary image into a primary image

Method and apparatus for associating identifiers with content

Authentication of physical and electronic media objects using digital watermarks

Color printing apparatus configured to superpose specified pattern on image

Image marking adapted to the image

Fragile watermark for detecting printed image copies

Printer driver separately applying watermark and information

Method and system for encoding images using encoding parameters from multiple sources

Image processor unit, image processing method, and storage medium

Portable devices and methods employing digital watermarking

Embedding information in a digital image digitized from a developed photographic film

Method, program, and apparatus for prohibiting a reproduction of an anti-copy document, and a medium storing the program

Watermarking electronic text documents

Method and apparatus for providing a noise estimation for automatic selection of dither patterns in low frequency watermarks

Content objects with computer instructions steganographically encoded therein, and associated methods

Video steganography

Methods and apparatus to produce security documents

Method and system for managing, accessing and paying for the use of copyrighted electronic media

Paper products and physical objects as means to access and control a computer or to navigate over or act as a portal on a network

Digital watermarking systems and methods

Self validating security documents utilizing watermarks

Security font system and method for generating traceable pages in an electronic document

Dual infrared gloss effect

Identifying document forms using digital fingerprints

Signal encoding for inks with low reflectivity