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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

Digital Watermarking Methods, Systems and Apparatus

TL;DR: In this article, the authors describe methods, sensors and apparatus that provide steganographic indicia or digital watermarking in image or video data, including determining one or more operating characteristics of a device.
Journal ArticleDOI

Research on image steganography analysis based on deep learning

TL;DR: Based on the representative deep learning method CNN, the model is designed and adjusted according to the characteristics of steganalysis, which makes the proposed model more effective in capturing the statistical characteristics such as neighborhood correlation.
Journal Article

Implementation of image steganography using 2-level DWT technique

TL;DR: This paper proposes the algorithm for embedding and extracting the secret image embedded behind the cover gray scale image by decreasing the complexity in image hiding through DWT technique while providing better undetectability and lesser distortion in the stego image.
Patent

Telephone method and apparatus

Irving Tsai
TL;DR: In this paper, a telephone and telephone answering apparatus and method are described for using secondary information embedded in audio passages included in phone calls. But they do not specify how to use the secondary information.
ReportDOI

Image Steganography for Hidden Communication

TL;DR: The methodology encompasses derivation of a general theory of steganographic communication, including theoretical capacity hounds, and design of an actual data-hiding technique that used digital imagery as a cover.
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.
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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.