A new way of applying spatial filters and wavelets to reduce noise in medical images

Abstract

This paper shows a new way of applying both a spatial filter and the discrete wavelet transform to reduce the noise in X-ray medical images. Our method combines a Gaussian filter and a Meyer wavelet transform. We experimentally found that it helps to improve the PSNR of an image from 0.5 dB to almost 1.0 dB when compared to other known methods.