Krishna Gopal Dhal; Iqbal Quraishi; Sanjoy Das

A Chaotic Lévy flight Approach in Bat and Firefly Algorithm for Gray level image Enhancement

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Author(s)

Krishna Gopal Dhal ^1,* Iqbal Quraishi ² Sanjoy Das ¹

1. University of Kalyani, Dept. of Engineering & Technological Studies, Kalyani, 741235, India

2. Kalyani Government Engineering College, Dept. of Information Technology, Kalyani, 741235, India

* Corresponding author.

DOI: https://doi.org/10.5815/ijigsp.2015.07.08

Received: 12 Feb. 2015 / Revised: 10 Apr. 2015 / Accepted: 11 May 2015 / Published: 8 Jun. 2015

Index Terms

Image enhancement, Bat algorithm, Firefly algorithm, Lévy flight, Chaotic sequence

Abstract

Recently nature inspired metaheuristic algorithms have been applied in image enhancement field to enhance the low contrast images in a control manner. Bat algorithm (BA) and Firefly algorithm (FA) is one of the most powerful metaheuristic algorithms. In this paper these two algorithms have been implemented with the help of chaotic sequence and lévy flight. One of them is FA via lévy flight where step size of lévy flight has been taken from chaotic sequence. In the Bat algorithm the local search has been done via lévy flight with chaotic step size. Chaotic sequence shows ergodicity property which helps in better searching. These two algorithms have been applied to optimize parameters of parameterized high boost filter. Entropy, number of edge pixels of the image have been used as objective criterion for measuring goodness of image enhancement. Fitness criterion has been maximized in order to get enhanced image with better contrast. From the experimental results it is clear that BA with chaotic lévy outperforms the FA via chaotic lévy.

Cite This Paper

Krishna Gopal Dhal, Iqbal Quraishi, Sanjoy Das,"A Chaotic Lévy flight Approach in Bat and Firefly Algorithm for Gray level image Enhancement", IJIGSP, vol.7, no.7, pp. 69-76, 2015. DOI: 10.5815/ijigsp.2015.07.08

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International Journal of Image, Graphics and Signal Processing (IJIGSP)