ºÝºÝߣ

ºÝºÝߣShare a Scribd company logo

Matlab image size invariant visual cryptography for general access structures subject to display quality constraints

•
•
E
Ecwaytech

Ecway Technologies provides IEEE projects and software developments with offices across multiple cities in India. They specialize in image size invariant visual cryptography for general access structures subject to display quality constraints. Their approach uses column vectors to encrypt secret pixels rather than conventional VC methods. They developed a mathematical model and simulated annealing algorithm to find optimal column vectors for construction without pixel expansion or uncontrollable display quality issues in recovered images. Experimental results showed superior recovered image quality over previous studies.

1 of 1
Download to read offline
ECWAY TECHNOLOGIES IEEE PROJECTS & SOFTWARE DEVELOPMENTS OUR OFFICES @ CHENNAI / TRICHY / KARUR / ERODE / MADURAI / SALEM / COIMBATORE BANGALORE / HYDRABAD CELL: +91 98949 17187, +91 875487 1111 / 2111 / 3111 / 4111 / 5111 / 6111 / 8111 VISIT: www.ecwayprojects.com MAIL TO: ecwaytechnologies@gmail.com IMAGE SIZE INVARIANT VISUAL CRYPTOGRAPHY FOR GENERAL ACCESS STRUCTURES SUBJECT TO DISPLAY QUALITY CONSTRAINTS ABSTRACT: Conventional visual cryptography (VC) suffers from a pixel-expansion problem, or an uncontrollable display quality problem for recovered images, and lacks a general approach to construct visual secret sharing schemes (VSSs) for general access structures (GASs). We propose herein a general and systematic approach to address these issues without sophisticated codebook design. The approach can be used for binary secret images in non-computer-aided decryption environments. We design a set of column vectors to encrypt secret pixels rather than use the conventional VCbased approach. We begin by formulating a mathematic model for the VC construction problem to find the column vectors for the optimal VC construction, after which we develop a simulatedannealing-based algorithm to solve the problem. The experimental results indicate that the display quality of the recovered image is superior to that of previous studies.

More Related Content

Matlab image size invariant visual cryptography for general access structures subject to display quality constraints

  • 1. ECWAY TECHNOLOGIES IEEE PROJECTS & SOFTWARE DEVELOPMENTS OUR OFFICES @ CHENNAI / TRICHY / KARUR / ERODE / MADURAI / SALEM / COIMBATORE BANGALORE / HYDRABAD CELL: +91 98949 17187, +91 875487 1111 / 2111 / 3111 / 4111 / 5111 / 6111 / 8111 VISIT: www.ecwayprojects.com MAIL TO: ecwaytechnologies@gmail.com IMAGE SIZE INVARIANT VISUAL CRYPTOGRAPHY FOR GENERAL ACCESS STRUCTURES SUBJECT TO DISPLAY QUALITY CONSTRAINTS ABSTRACT: Conventional visual cryptography (VC) suffers from a pixel-expansion problem, or an uncontrollable display quality problem for recovered images, and lacks a general approach to construct visual secret sharing schemes (VSSs) for general access structures (GASs). We propose herein a general and systematic approach to address these issues without sophisticated codebook design. The approach can be used for binary secret images in non-computer-aided decryption environments. We design a set of column vectors to encrypt secret pixels rather than use the conventional VCbased approach. We begin by formulating a mathematic model for the VC construction problem to find the column vectors for the optimal VC construction, after which we develop a simulatedannealing-based algorithm to solve the problem. The experimental results indicate that the display quality of the recovered image is superior to that of previous studies.