Introduction

 
• Motivation and structure
  • Structure of this thesis
• The image restoration problem
  • Common sources of blurring and noise
  • The point-spread function (PSF) model of blurring
  • Noise models
• Literature review
  • Order statistic filters
  • Lee's local statistics filter
  • The Wiener filter
  • Global iterative approaches
• The importance of priors
• Measures of image quality
  • Frequency-domain SNR behaviour
• Are local filters good enough?
  • Additive noise is primarily a local process