Restoration of error-diffused images using projection onto convex sets


Unal G. , CETIN A.

IEEE TRANSACTIONS ON IMAGE PROCESSING, vol.10, no.12, pp.1836-1841, 2001 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 10 Issue: 12
  • Publication Date: 2001
  • Doi Number: 10.1109/83.974568
  • Title of Journal : IEEE TRANSACTIONS ON IMAGE PROCESSING
  • Page Numbers: pp.1836-1841

Abstract

In this paper, a novel inverse halftoning method is proposed to restore a continuous tone image from a given half-tone image. A set theoretic formulation is used where three sets are defined using the prior information about the problem. A new space-domain projection is introduced assuming the halftoning is performed using error diffusion, and the error diffusion litter kernel is known. The space-domain, frequency-domain, and space-scale domain projections are used alternately to obtain a feasible solution for the inverse halftoning problem which does not have a unique solution.