Medical Image Restoration Using Non-Local Means Algorithm

Abstract

Generally, the removal of noise from medicalimages is difficult. This noise can be removed easily by Non-Local Means(NLM) method. NLM filter helps to differentiate image data and noise data. First, the image is restored by Laplacian of Gaussian (LoG).To restore corrupted pixels,theLoGfilterisapplied on white Gaussian noiseforSmoothing and removing. After, the Image is interpolated by the NLM algorithm by averaging all pixelsinthe requiredimage.Therefore,ImprovedPSNR,MSE,andgood image quality are determined with this algorithmand the result isobtained.