Image enhancement and filtering using wavelets

Abstract

The authors report on the results of an analysis of the wavelet transform and its use as a tool for image enhancement and filtering in knowledge-based systems. They review the concept of the wavelet transform. A convolution theorem for the wavelet transform and a filter model are described, which uses a wavelet orthonormal basis set. This model is compared to the linear filter model for image enhancement and filtering. The wavelet filter is applied to a set of degraded sample imagery. Applied operations include edge detection and sharpening.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>