Multiscale adaptive image restoration in the wavelet domain

M. R. Banham, Aggelos K Katsaggelos

Research output: Contribution to journalConference article

2 Scopus citations

Abstract

This paper introduces a method for spatially adaptive image restoration based on the detail coefficients of the wavelet transform of a noisy blurred image. A multiscale recursive smoothing filter is applied to the wavelet coefficients ordered onto quadtree structures along different orientations. These coefficients are first prefiltered by a constrained least squares filter in order to remove the spatial correlations due to the blur. An optimal way of choosing the regularization parameters used for this prefiltering operation is introduced here. This is based on an analysis of the detection operations performed by the multiscale filter in order to model edge and non-edge regions of the image differently. Results show that this approach offers a highly adaptive means of preserving edges in a restored image.

Original languageEnglish (US)
Article number413862
Pages (from-to)187-191
Number of pages5
JournalProceedings - International Conference on Image Processing, ICIP
Volume3
DOIs
StatePublished - Jan 1 1994
EventProceedings of the 1994 1st IEEE International Conference on Image Processing. Part 3 (of 3) - Austin, TX, USA
Duration: Nov 13 1994Nov 16 1994

ASJC Scopus subject areas

  • Software
  • Computer Vision and Pattern Recognition
  • Signal Processing

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