Visual Cryptography And Secret Image Sharing

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Visual Cryptography And Secret Image Sharing

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Author : Stelvio Cimato
language : en
Publisher: CRC Press
Release Date : 2017-12-19

Visual Cryptography And Secret Image Sharing written by Stelvio Cimato and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-12-19 with Computers categories.

With rapid progress in Internet and digital imaging technology, there are more and more ways to easily create, publish, and distribute images. Considered the first book to focus on the relationship between digital imaging and privacy protection, Visual Cryptography and Secret Image Sharing is a complete introduction to novel security methods and sharing-control mechanisms used to protect against unauthorized data access and secure dissemination of sensitive information. Image data protection and image-based authentication techniques offer efficient solutions for controlling how private data and images are made available only to select people. Essential to the design of systems used to manage images that contain sensitive data—such as medical records, financial transactions, and electronic voting systems—the methods presented in this book are useful to counter traditional encryption techniques, which do not scale well and are less efficient when applied directly to image files. An exploration of the most prominent topics in digital imaging security, this book discusses: Potential for sharing multiple secrets Visual cryptography schemes—based either on the probabilistic reconstruction of the secret image, or on different logical operations for combining shared images Inclusion of pictures in the distributed shares Contrast enhancement techniques Color-image visual cryptography Cheating prevention Alignment problems for image shares Steganography and authentication In the continually evolving world of secure image sharing, a growing number of people are becoming involved as new applications and business models are being developed all the time. This contributed volume gives academicians, researchers, and professionals the insight of well-known experts on key concepts, issues, trends, and technologies in this emerging field.

Visual Cryptography And Its Applications

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Author : Jonathan Patrick Weir
language : en
Publisher: Bookboon
Release Date : 2011

Visual Cryptography And Its Applications written by Jonathan Patrick Weir and has been published by Bookboon this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011 with categories.

Visual Cryptography For Image Processing And Security

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Author : Feng Liu
language : en
Publisher: Springer
Release Date : 2015-10-01

Visual Cryptography For Image Processing And Security written by Feng Liu and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015-10-01 with Computers categories.

This book addresses the fundamental concepts in the theory and practice of visual cryptography. The design, construction, analysis, and application of visual cryptography schemes (VCSs) are discussed in detail. Original, cutting-edge research is presented on probabilistic, size invariant, threshold, concolorous, and cheating immune VCS. This updated second edition has also been expanded with new content on braille and 2D barcode authentication of visual cryptography shares. Features: contains review exercises at the end of each chapter, as well as a helpful glossary; examines various common problems in visual cryptography, including the alignment, flipping, cheating, distortion, and thin line problems; reviews a range of VCSs, including XOR-based visual cryptography and security enriched VCS; describes different methods for presenting color content using visual cryptographic techniques; covers such applications of visual cryptography as watermarking, resolution variant VCS, and multiple resolution VCS.

Transactions On Data Hiding And Multimedia Security Ix

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Author : Yun Q. Shi
language : en
Publisher: Springer
Release Date : 2014-03-24

Transactions On Data Hiding And Multimedia Security Ix written by Yun Q. Shi and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014-03-24 with Computers categories.

Since the mid 1990s, data hiding has been proposed as an enabling technology for securing multimedia communication and is now used in various applications including broadcast monitoring, movie fingerprinting, steganography, video indexing and retrieval and image authentication. Data hiding and cryptographic techniques are often combined to complement each other, thus triggering the development of a new research field of multimedia security. Besides, two related disciplines, steganalysis and data forensics, are increasingly attracting researchers and becoming another new research field of multimedia security. This journal, LNCS Transactions on Data Hiding and Multimedia Security, aims to be a forum for all researchers in these emerging fields, publishing both original and archival research results. The seven papers included in this special issue were carefully reviewed and selected from 21 submissions. They address the challenges faced by the emerging area of visual cryptography and provide the readers with an overview of the state of the art in this field of research.

Improving Image Quality In Visual Cryptography

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Author : Bin Yan
language : en
Publisher: Springer
Release Date : 2019-06-08

Improving Image Quality In Visual Cryptography written by Bin Yan and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-06-08 with Technology & Engineering categories.

This book comprehensively covers the important efforts in improving the quality of images in visual cryptography (VC), with a focus on cases with gray scale images. It not only covers schemes in traditional VC and extended VC for binary secret images, but also the latest development in the analysis-by-synthesis approach. This book distinguishes itself from the existing literature in three ways. First, it not only reviews traditional VC for binary secret images, but also covers recent efforts in improving visual quality for gray scale secret images. Second, not only traditional quality measures are reviewed, but also measures that were not used for measuring perceptual quality of decrypted secret images, such as Radially Averaged Power Spectrum Density (RAPSD) and residual variance, are employed for evaluating and guiding the design of VC algorithms. Third, unlike most VC books following a mathematical formal style, this book tries to make a balance between engineering intuition and mathematical reasoning. All the targeted problems and corresponding solutions are fully motivated by practical applications and evaluated by experimental tests, while important security issues are presented as mathematical proof. Furthermore, important algorithms are summarized as pseudocodes, thus enabling the readers to reproduce the results in the book. Therefore, this book serves as a tutorial for readers with an engineering background as well as for experts in related areas to understand the basics and research frontiers in visual cryptography.

Improved Visual Cryptography Schemes Without Images Size Expansion

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Author : Nazanin Askari
language : en
Publisher:
Release Date : 2012

Improved Visual Cryptography Schemes Without Images Size Expansion written by Nazanin Askari and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2012 with Computer file sharing categories.

A Thesis On Propose And Concert Assessment Of Advance Visual Crypto System

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Author : Er Jawad Ahmad Dar
language : en
Publisher: Lulu.com
Release Date :

A Thesis On Propose And Concert Assessment Of Advance Visual Crypto System written by Er Jawad Ahmad Dar and has been published by Lulu.com this book supported file pdf, txt, epub, kindle and other format this book has been release on with categories.

Steganography Using Visual Cryptography

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Author : Pratheek Praveen Kumar
language : en
Publisher: PRATHEEK
Release Date : 2019-03-30

Steganography Using Visual Cryptography written by Pratheek Praveen Kumar and has been published by PRATHEEK this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-03-30 with Technology & Engineering categories.

This work is authored by Pratheek Praveen Kumar along with Ruchir Bhgat and Shiksha Suvarna, all three Telecommunications Engineers. Digital Watermarking is the process of irreversibly embedding information into a digital signal. The signal may be audio, pictures or video. There are two types of Watermarking, Visible Watermarking and Invisible Watermarking. In Visible Watermarking, the information is visible in the picture or video. Typically, the information is text or a logo which identifies the owner of the media. Example of Visible Watermark is when a television broadcaster adds its logo to the corner of transmitted video. In Invisible Watermarking, information is added as digital data to audio, picture or video, but it cannot be perceived as such (although it is possible to detect the hidden information). Digital Watermarking schemes are widely being used as potential solution for ownership protection. The Watermarking algorithms in general, may be viewed as digital communication scheme for imperceptible transmission of an auxiliary message through cover image. Several software implementations of the proposed algorithms are available, but very few attempts have been made for the property of robustness and they are not able to provide the good visual Recovery Watermark Image (IWD) as user aspect. This is accomplished by spreading one watermark bit over many samples of the Cover data using a modulated spreading sequence. This is a study of this technology.

Filters In Halftone Visual Cryptography Via Error Diffusion

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Author : Anshul Sharma
language : en
Publisher: LAP Lambert Academic Publishing
Release Date : 2013

Filters In Halftone Visual Cryptography Via Error Diffusion written by Anshul Sharma and has been published by LAP Lambert Academic Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.

Secure digital imaging is an important research area combining methods and techniques coming from cryptography and image processing. Visual cryptography and in general secret image sharing techniques enable distributing sensitive visual materials to involved participants through public communication channels, as the generated secure images do not reveal any information if they are not combined in the prescribed way. In visual cryptography, the decoding process is performed directly by the human eyes; while in general, the shared images need some processing to reconstruct the secret image. The increasing number of possibilities to create, publishes, and distributes images calls for novel protection methods, offering new sharing and access control mechanisms for the information contained in the published images. Secure image sharing techniques overcome the traditional cryptographic approach, providing new solutions for the development of new and secure imaging applications.

Handbook Of Image Based Security Techniques

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Author : Shivendra Shivani
language : en
Publisher: CRC Press
Release Date : 2018-05-20

Handbook Of Image Based Security Techniques written by Shivendra Shivani and has been published by CRC Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-20 with Computers categories.

This book focuses on image based security techniques, namely visual cryptography, watermarking, and steganography. This book is divided into four sections. The first section explores basic to advanced concepts of visual cryptography. The second section of the book covers digital image watermarking including watermarking algorithms, frameworks for modeling watermarking systems, and the evaluation of watermarking techniques. The next section analyzes steganography and steganalysis, including the notion, terminology and building blocks of steganographic communication. The final section of the book describes the concept of hybrid approaches which includes all image-based security techniques. One can also explore various advanced research domains related to the multimedia security field in the final section. The book includes many examples and applications, as well as implementation using MATLAB, wherever required. Features: Provides a comprehensive introduction to visual cryptography, digital watermarking and steganography in one book Includes real-life examples and applications throughout Covers theoretical and practical concepts related to security of other multimedia objects using image based security techniques Presents the implementation of all important concepts in MATLAB