Despeckling of Ultrasound Imaging using Median Regularized Coupled Pde

This paper presents an approach for reducing speckle in ultrasound images using Coupled Partial Differential Equation (CPDE) which has been obtained by uniting secondorder and the fourth-order partial differential equations. Using PDE to reduce the speckle is the noise-smoothing methods which is getting attention widely, because PDE can keep the edge well when it reduces the noise. We also introduced a median regulator to guide energy source to boost the features in the image and regularize the diffusion. The proposed method is tested in both simulated and real medical ultrasound images. The proposed method is compared with SRAD, Perona Malik diffusion and Non linear coherent diffusion methods, our method gives better result in terms of CNR, SSIM and FOM. Index Terms – Ultrasound, Speckle, PDE, median filter.