A technique to remove image artefacts in optical systems with wavefront coding

Mads Demenikov, Andrew R. Harvey

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Citations (Scopus)


Based on an analytical analysis of the optical transfer function in an optical system with wavefront coding, specifically with a cubic phase mask in the aperture stop, we explain that such systems have image artefacts in the restored images and that these are manifested as replication artefacts. To remove image artefacts we propose to store a set of defocused point spread functions such that a single defocused image can be restored to a set of images, wherein one of them is without image artefacts. The image without image artefacts is determined with a new metric which we define in the wavelet domain. © 2009 Copyright SPIE - The International Society for Optical Engineering.

Original languageEnglish
Title of host publicationNovel Optical Systems Design and Optimization XII
Publication statusPublished - 2009
EventSpintronics II - San Diego, CA, United States
Duration: 2 Aug 20095 Aug 2009


ConferenceSpintronics II
Country/TerritoryUnited States
CitySan Diego, CA


  • extended depth of field
  • image artefacts
  • restoration techniques
  • Wavefront coding


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