A novel method for shot noise removal in medical ultrasound images

Ultrasonic images are generally affected by multiplicative shot noise. This paper analyzes and models the coefficients of 2D multiresolution wavelet decomposition of logarithmically transformed images using the alpha stable distribution. We propose a new function that performs the nonlinear operation on the data of classifying the coefficients, thus obtaining a new noise-removal method based on multiresolution wavelet decomposition and the alpha stable model.