Performance Enhancement of Differential Evolution by Incorporating Lévy Flight and Chaotic Sequence for the Cases of Satellite Images

Krishna Gopal Dhal, Md. Iqbal Quraishi and Sanjoy Das
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Krishna Gopal Dhal: Department of Engineering and Technological Studies, University of Kalyani, Kalyani, India
Md. Iqbal Quraishi: Department of Information Technology, Kalyani Government Engineering College, Kalyani, India
Sanjoy Das: Department of Engineering and Technological Studies, University of Kalyani, Kalyani, India

International Journal of Applied Metaheuristic Computing (IJAMC), 2015, vol. 6, issue 3, 69-81

Abstract: Differential Evolution (DE) is a simple but powerful evolutionary algorithm. Crossover Rate (CR) and Mutation Factor (F) are the most important control parameters in DE. Mutation factor controls the diversification. In traditional DE algorithm CR and F are kept constant. In this paper, the values of CR and F are modified to enhance the capability of traditional DE algorithm. In the first modified algorithm chaotic sequence is used to perform this modification. In the next modified algorithm Lévy Flight with chaotic step size is used for such enhancement. In the second modified DE, population diversity has been used to build population in every generation. As a result the algorithm does not converge prematurely. Both modified algorithms have been applied to optimize parameters of the parameterized contrast stretching function. The algorithms are tested for satellite image contrast enhancement and the results are compared, which show that DE via chaotic Lévy and population diversity information outperforms the traditional and chaotic DE in the image enhancement domain.

Date: 2015
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