Improving image quality in visual cryptography / Ben Yan, Yong Xiang and Guang Hua.
2020
QA268
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Details
Title
Improving image quality in visual cryptography / Ben Yan, Yong Xiang and Guang Hua.
Author
Yan, Bin, author.
ISBN
9789811382895 (electronic book)
9811382891 (electronic book)
9789811382888
9811382891 (electronic book)
9789811382888
Published
Singapore : Springer, [2020]
Copyright
©2020
Language
English
Description
1 online resource.
Item Number
10.1007/978-981-13-8 doi
Call Number
QA268
Dewey Decimal Classification
003.54
Summary
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.
Bibliography, etc. Note
Includes bibliographical references.
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Source of Description
Vendor-supplied metadata.
Added Author
Xiang, Yong, author.
Hua, Guang, author.
Hua, Guang, author.
Series
Signals and communication technology.
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Online Access
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Table of Contents
Introduction
Basic visual cryptography algorithms
Improving the visual quality for binary secret images
Digital Halftoning
Improving visual quality for share images
Improving visual quality for probabilistic and random grid schemes
Improving visual quality for vector schemes
Conclusion.
Basic visual cryptography algorithms
Improving the visual quality for binary secret images
Digital Halftoning
Improving visual quality for share images
Improving visual quality for probabilistic and random grid schemes
Improving visual quality for vector schemes
Conclusion.