scispace - formally typeset
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.

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Citations
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Patent

Noise influenced watermarking methods and apparatus

TL;DR: In this article, the authors describe methods, system and apparatus for steganographically encoding information in image or video data, e.g., determining one or more noise characteristics of a device, influencing a steganographic embedding process associated with the device.

Fixing, padding and Embedding - A Modulated Stego

TL;DR: In this paper, an idea has been proposed for incorporating Cyclic Prefix (CP), Cyclic Post Fix (CPOF), Zero Padding (ZP) schemes in OFDM system while embedding the secret data for secure data transmission.
Proceedings ArticleDOI

Capacity of an intensity interferometry channel

TL;DR: It is shown that intensity interferometry may be used to send a non-trivial amount of data steganographically over the air and has the potential to be highly secure against eavesdropping, and thus shows promise as a means of steganographic communication.
Book ChapterDOI

Self-Embedding Watermarking with Content Restoration Capabilities

TL;DR: The authors analyze the distinguishing features and loopholes by considering four key techniques, namely the secure block-mapping function, the unambiguous authentication, the reference information extraction, and the watermark embedding approaches.
Journal ArticleDOI

Secret Sharing using Image Hashing

TL;DR: Experimental results showed the effectiveness and the efficiency of the proposed algorithm where a message was encrypted using a coding image without modifying its pixels and it was decrypted without errors.
References
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Journal ArticleDOI

De-noising by soft-thresholding

TL;DR: The authors prove two results about this type of estimator that are unprecedented in several ways: with high probability f/spl circ/*/sub n/ is at least as smooth as f, in any of a wide variety of smoothness measures.
Book

Fundamentals of digital image processing

TL;DR: This chapter discusses two Dimensional Systems and Mathematical Preliminaries and their applications in Image Analysis and Computer Vision, as well as image reconstruction from Projections and image enhancement.
Journal ArticleDOI

Error bounds for convolutional codes and an asymptotically optimum decoding algorithm

TL;DR: The upper bound is obtained for a specific probabilistic nonsequential decoding algorithm which is shown to be asymptotically optimum for rates above R_{0} and whose performance bears certain similarities to that of sequential decoding algorithms.
Journal ArticleDOI

Secure spread spectrum watermarking for multimedia

TL;DR: It is argued that insertion of a watermark under this regime makes the watermark robust to signal processing operations and common geometric transformations provided that the original image is available and that it can be successfully registered against the transformed watermarked image.