An Optimized Anisotropic Diffusion Approach for Despeckling of SAR Images
Vikrant Bhateja, Aditi Sharma, Abhishek Narayan Tripathi, Suresh Chandra Satapathy, Dac‐Nhuong Le · Communications in computer and information science · 2016
This paper focuses to address the suppression of residual speckle content, thereby leading to performance improvement of Anisotropic Diffusion (AD) filtering. The present work proposes an optimized AD filtering approach for despeckling of Synthetic Aperture Radar (SAR) images using Ant Colony Optimization (ACO). The residual speckle suppression has been attained via optimal parameter selection of parameters of AD using ACO algorithm. Further, computation of conductance function via eight-directional gradients (derivatives) leads to effective edge preservation during despeckling. During simulations, the fidelity of restored SAR images is validated using PSNR and SSIM as image quality metrics.