Behaviour of image degradation model in multiresolution

Multiresolution techniques are being extensively used in signal processing literature. This paper has two parts, in the first part we derive a relatio nship between the general degradation model (Y = B x X + W) at coarse and f ine resolutions. In the second part we develop a signal restoration scheme in a multiresolution framework and demonstrate through experiments that the knowledge of the relationship between the degradation model at different r esolutions helps in obtaining computationally efficient restoration scheme. (C) 2000 Elsevier Science B.V. All rights reserved.