Chapter 4 - The Wavelet Transform in Medical Imaging

Abstract

In this chapter, we present the theory of 2-D discrete wavelet transforms, and of biorthogonal wavelets, and we show several applications of the wavelet transform in medical imaging. The most remarkable applications are: (a) ability of the WT to make visible simple objects in a noisy background, which were previously considered to be invisible to a human viewer, (b) demonstrated superiority of the WT over existing techniques for unsharp mask enhancement and median filtering, and (c) enhancing the visibility of clinically important features.