Journal ArticleDOI
Spread spectrum image steganography
TLDR
A new method of digital Steganography, entitled spread spectrum image steganography (SSIS), which hides and recovers a message of substantial length within digital imagery while maintaining the original image size and dynamic range.Abstract:
We present a new method of digital steganography, entitled spread spectrum image steganography (SSIS). Steganography, which means "covered writing" in Greek, is the science of communicating in a hidden manner. Following a discussion of steganographic communication theory and review of existing techniques, the new method, SSIS, is introduced. This system hides and recovers a message of substantial length within digital imagery while maintaining the original image size and dynamic range. The hidden message can be recovered using appropriate keys without any knowledge of the original image. Image restoration, error-control coding, and techniques similar to spread spectrum are described, and the performance of the system is illustrated. A message embedded by this method can be in the form of text, imagery, or any other digital signal. Applications for such a data-hiding scheme include in-band captioning, covert communication, image tamperproofing, authentication, embedded control, and revision tracking.read more
Citations
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Journal ArticleDOI
Color image steganography scheme using DFT, SPIHT codec, and modified differential phase-shift keying techniques
TL;DR: The fold phase distribution DPSK concept is developed to obtain more than 1.5 dB quality improvement and twice the noise margin than the standard DPSK technique on the same test condition.
Patent
Embedding and detecting a watermark in images
TL;DR: In this paper, a digital image signal is watermarked by locally changing geometric features of the image, e.g., a pattern of lines, and the most significant image pixels are determined and then moved to the vicinity of the line pattern.
Patent
Forensic marking using a common customization function
TL;DR: In this article, the authors describe a common customization function for forensic watermark insertion into a digital content signal using a generic transformation technique for use as a customization step for producing versions of content forensically marked with any of a multiplicity of mark messages.
Journal ArticleDOI
Phase for Face saving-a multicarrier Stego
TL;DR: The following work focuses on modulating the signal through QAM, a highly bandwidth efficient modulation technique and subsequently embedding the payload on the modulated signal during the process of signal mapping, and evaluates the system's performance via BER for different embedding levels.
Patent
Method and system for copy protection of displayed data content
Moshe Rubin,Daniel Schreiber +1 more
TL;DR: A method for altering text displayed in a formatted page, including locating a buffer of memory locations containing contents of a page, locating a first text string between two markers within the buffer, and inserting N-M special fill characters in the N-m unfilled memory locations between the markers in order to avoid the need to move the markers closer together as discussed by the authors.
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