<abstract xmlns="http://www.w3.org/1999/xhtml"><p>The discrete fractional transforms is a signal processing tool which suggests computational algorithms and solutions to various sophisticated applications. In this paper, a new technique to retrieve the encrypted and scrambled image based on discrete fractional transforms has been proposed. Two-dimensional image was encrypted using discrete fractional transforms with three fractional orders and two random phase masks placed in the two intermediate planes. The significant feature of discrete fractional transforms benefits from its extra degree of freedom that is provided by its fractional orders. Security strength was enhanced (1024!)4 times by scrambling the encrypted image. In decryption process, image retrieval is sensitive for both correct fractional order keys and scrambling algorithm. The proposed approach make the brute force attack infeasible. Mean square error and relative error are the recital parameters to verify validity of proposed method.</p></abstract>

The discrete fractional transforms is a signal processing tool which suggests computational algorithms and solutions to various sophisticated applications. In this paper, a new technique to retrieve the encrypted and scrambled image based on discrete fractional transforms has been proposed. Two-dimensional image was encrypted using discrete fractional transforms with three fractional orders and two random phase masks placed in the two intermediate planes. The significant feature of discrete fractional transforms benefits from its extra degree of freedom that is provided by its fractional orders. Security strength was enhanced (1024!)4 times by scrambling the encrypted image. In decryption process, image retrieval is sensitive for both correct fractional order keys and scrambling algorithm. The proposed approach make the brute force attack infeasible. Mean square error and relative error are the recital parameters to verify validity of proposed method.

Image Retrieval Algorithm Based on Discrete Fractional Transforms

Kulbir Singh Department of ECE, Thapar University, Patiala - 147004, Punjab, India

Department of ECE, Thapar University, Patiala - 147004, Punjab, India

Journal of Electrical Engineering

{"article-title":"Image Retrieval Algorithm Based on Discrete Fractional Transforms"}

The discrete fractional transforms is a signal processing tool which suggests computational algorithms and solutions to various sophisticated applications. In...

Image Retrieval Algorithm Based on Discrete Fractional Transforms

Published Online: Aug 24, 2013

Page range: 250 - 255

DOI: https://doi.org/10.2478/jee-2013-0036

Keywords
discrete fractional transforms, image retrieval, mean square error, relative error, security

This content is open access.

Image Retrieval Algorithm Based on Discrete Fractional Transforms

Published Online: Aug 24, 2013

Page range: 250 - 255

DOI: https://doi.org/10.2478/jee-2013-0036

Keywordsdiscrete fractional transforms, image retrieval, mean square error, relative error, security

This content is open access.

Keywords
discrete fractional transforms, image retrieval, mean square error, relative error, security