Handbook of Image and Video Processing, 2nd Edition

9.6

Visual Cryptography: The Combinatorial and Halftoning Frameworks

Gonzalo R. Arce,     University of Delaware

Giovanni Di Crescenzo,     Telcordia Technologies

Zhi Zhou,     Samsung Information Systems America

1 Introduction

1.1 Visual Cryptography: The Combinatorial Framework

1.2 Visual Cryptography: The Halftoning Framework

1.3 This Chapter

2 Visual Secret Sharing

2.1 Notion and Formal Definitions

2.2 Some Constructions

3 Visual Steganography

3.1 Combinatorial Techniques

3.2 Halftoning Techniques

3.3 Simulation Results

4 Other Work and Conclusions

References

1 Introduction

Visual cryptography (VC), introduced in [15], is a recently emerging research area in cryptography, where images are used as an encoding of possibly ...