Visual Cryptography and Secret Image Sharing

Visual Cryptography from Halftone Error Diffusion, G.R. Arce, Z. Wang, and G. Di Crescenzo

Visual Secret Sharing

Halftone VSS Construction Using Error Diffusion

Halftone VSS Construction Using Parallel Error Diffusion

Quality of Halftone Shares

Discussion

Simulation Results

Visual Cryptography for Color Images, S. Cimato, R. De Prisco, and A. De Santis

Color Superposition

Formal Models for Colored VCS

Schemes for the sc Model

Schemes for the nd Model

Schemes for the general Model

Other Schemes

Visual Cryptography for Multiple Secrets, S.J. Shyu

Naor and Shamir's Basic Visual Secret Sharing Scheme

Visual Two-Secret Sharing Schemes

Visual Multiple-Secret Sharing Schemes

Extended Visual Cryptography for Photograph Images, Y. Yamaguchi

Basic Visual Cryptography Schemes

Fundamentals of Photograph Visual Cryptography

Variations of Photograph Visual Cryptography

Misalignment-Tolerant Photograph Visual Cryptography

Probabilistic Visual Cryptography Schemes, S. Cimato, R. De Prisco, and A. De Santis

Visual Cryptography Schemes

Canonical Probabilistic Schemes

Probabilistic Schemes with No Pixel Expansion

Trading Pixel Expansion with Probabilities

Constructing Probabilistic Schemes

Probabilistic Schemes with Boolean Operations

Conclusions and Open Problems

XOR-Based Visual Cryptography, D. Wang and L. Dong

Preliminaries

Visual Cryptography Scheme Using the Polarization of Light

Visual Cryptography Scheme with Reversing

Secret Sharing Scheme Using Boolean Operation

Visual Cryptography and Random Grids, S. Jian Shyu

Random Grids

Visual Cryptograms of Random Grids

Visual Cryptography and Contrast Bounds, A. Klein

Preliminaries

Approximate Inclusion Exclusion

Designs and Codes

Optimal 3-out-of-n Schemes

Asymptotic Optimal k-out-of-n Schemes

Contrast Tradeoffs for Extended Visual Cryptography Schemes

Enhancing the Contrast by Nonstandard Models

Visual Cryptography Schemes with Reversing, A. De Santis, A. Lisa Ferrara, and B. Masucci

Visual Cryptography Schemes

Almost Ideal Contrast VCS with Reversing

Ideal Contrast VCS with Reversing

Cheating Prevention in Visual Cryptography, Y.-C. Chen, G. Horng, and D.-S. Tsai

Preliminaries

Cheating Prevention Schemes

Analysis of Cheating Prevention Schemes

Resolving the Alignment Problem in Visual Cryptography, F. Liu

Preliminaries

Misalignment with Integer Number of Subpixels

Misalignment with Less Than One Subpixel

A Misalignment Tolerant VCS

Conclusions and Discussions

Acknowledgments

Applications of Visual Cryptography, B. Borchert and K. Reinhardt

Trojan-Secure Confirmation of Transactions

Trojan-Secure Authentication Using a PIN

Security Versus Multiple Use

Using Refraction

Technical Problems Concerning Adjustment and Parallaxes

Voting with a Receipt Based on Visual Cryptography

Steganography in Halftone Images, O.C. Au, Y. Guo, and J.S. Ho

A Review of Error Diffusion

Data Hiding by Stochastic Error Diffusion (DHSED)

Data Hiding by Conjugate Error Diffusion (DHCED)

Performance Analysis

Image Secret Sharing, W.-Q. Yan, J. Weir, and M.S. Kankanhalli

State of the Art

Approaches for Image Sharing

Experiment and Evaluation

Polynomial-based Image Sharing, S.-J. Wang, C.-H. Yang, and Y.-T. Chen

Polynomial-Based Sharing Scheme

Preliminaries and Related Works

Wang et al.'s Scheme

Experimental Results

Image Sharing with Steganography and Authentication, Z.-X. Yin, C.-C. Lin, and C.-C. Chang

Related Work

Adopted Techniques in the Proposed Scheme

Proposed Scheme

Experimental Results

Two-Decoding-Option Image Sharing Method, C.-N. Yang, C.-B. Ciou, and T.-S. Chen

Preliminaries

Previous Works

A New (k, n)-TiOISSS

Experimental Results and Comparisons

Biography

Stelvio Cimato, Ching-Nung Yang