Model-independent noise-robust extension of ptychography

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

*Corresponding author for this work

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)
102 Downloads (Pure)


A noise-robust extension of iterative phase retrieval algorithms that does not need to assume a noise model is proposed. It works by adapting the intensity constraints using the reconstructed object. Using a proof-of-principle ptychographic experiment with visible light and a spatial light modulator to create an object, the proposed method is tested and it compares favorably to the Extended Ptychographic Iterative Engine (ePIE) with reduced step size. The method is general, so it can also be applied to other iterative reconstruction schemes such as phase retrieval using focus variation.

Original languageEnglish
Pages (from-to)5857-5874
Number of pages18
JournalOptics Express
Issue number5
Publication statusPublished - 2018


  • Computational imaging
  • Noise in imaging systems
  • Phase retrieval
  • Inverse problems
  • OA-Fund TU Delft


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