Combining ptychographical algorithms with the Hybrid Input-Output (HIO) algorithm

A. P. Konijnenberg*, W. M J Coene, S. F. Pereira, H. P. Urbach

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

14 Citations (Scopus)
181 Downloads (Pure)


In this article we combine the well-known Ptychographical Iterative Engine (PIE) with the Hybrid Input-Output (HIO) algorithm. The important insight is that the HIO feedback function should be kept strictly separate from the reconstructed object, which is done by introducing a separate feedback function per probe position. We have also combined HIO with floating PIE (fPIE) and extended PIE (ePIE). Simulations indicate that the combined algorithm performs significantly better in many situations. Although we have limited our research to a combination with HIO, the same insight can be used to combine ptychographical algorithms with any phase retrieval algorithm that uses a feedback function.

Original languageEnglish
Pages (from-to)43-54
Number of pages12
Publication statusPublished - 1 Dec 2016


  • Phase retrieval
  • Ptychography


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