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

Jun 22, 20130 likes46 views

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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 VC-
based 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 simulated-
annealing-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.
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

The document proposes a novel joint data-hiding and compression scheme for digital images using side match vector quantization (SMVQ) and image inpainting. It integrates data hiding and image compression into a single module. On the sender side, residual blocks are embedded with secret data and compressed using SMVQ or image inpainting. The receiver can extract secret bits and decompress the image using the index values in segmented sections. Experimental results demonstrate the effectiveness of the proposed scheme.

Image size invariant visual cryptography for general access structures subjec...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.

Image size invariant visual cryptography for general access structures subjec...Ecwayt

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 while improving the display quality of recovered images over previous studies.

Matlab image size invariant visual cryptography for general access structure...Ecwaytech

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

1. 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 VC- based 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 simulated- annealing-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. 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

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