An adaptive inverse halftoning algorithm

Li Ming Chen*, Hsueh-Ming Hang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations


A class of inverse halftoning algorithms that recovers grayscale (continuous-tone) images from halftone images is proposed. The basic structure is an optimized linear filter. Then, a properly designed adaptive postprocessor is employed to enhance the recovered image quality. Finally, a multistage space-varying algorithm is developed that uses the basic linear filter structure as before but with spatially adaptive parameters.

Original languageEnglish
Article number605420
Pages (from-to)1202-1209
Number of pages8
JournalIEEE Transactions on Image Processing
Issue number8
StatePublished - Aug 1997


  • Halftoning
  • Linear filter
  • Postprocessing

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