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      • Department of Electrical and Electronics Engineering
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      Restoration of error-diffused images using projection onto convex sets

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      Author
      Unal G.B.
      Çetin, A.E.
      Date
      2001
      Source Title
      IEEE Transactions on Image Processing
      Print ISSN
      10577149
      Volume
      10
      Issue
      12
      Pages
      1836 - 1841
      Language
      English
      Type
      Article
      Item Usage Stats
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      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 filter 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.
      Keywords
      Error diffusion
      Inverse error diffusion
      Inverse halftoning
      Projection onto convex sets (POCS)
      Restoration
      Error diffusion
      Inverse halftoning method
      Algorithms
      Error analysis
      FIR filters
      Frequency domain analysis
      Iterative methods
      Set theory
      Image reconstruction
      Permalink
      http://hdl.handle.net/11693/24767
      Published Version (Please cite this version)
      http://dx.doi.org/10.1109/83.974568
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      • Department of Electrical and Electronics Engineering 3636
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