Noniterative sub-pixel shifting super-resolution lensless digital holography

Heejung Lee, Jongwu Kim, Junwoo Kim, Philjun Jeon, Seung Ah Lee, Dugyoung Kim

Research output: Contribution to journalArticlepeer-review

5 Citations (Scopus)


Lensless digital holography (LDH) is gaining considerable attention lately due to a simple experimental setup, wide field-of-view, and three-dimensional (3D) imaging capability. Since the resolution of LDH is limited by the Nyquist frequency of a detector array, the major drawback of LDH is resolution, and a lot of efforts were made to enhance the resolution of LDH. Here we propose and demonstrate a fast noniterative sub-pixel shifting super-resolution technique that can effectively enhance the resolution of LDH by a factor of two. We provide detailed frequency-domain formulae for our noniterative frequency-domain super-resolution method. The validity of our proposed method is experimentally demonstrated both for scattering and phase objects.

Original languageEnglish
Pages (from-to)29996-30006
Number of pages11
JournalOptics Express
Issue number19
Publication statusPublished - 2021 Sept 13

Bibliographical note

Funding Information:
Funding. Korea Institute for Advancement of Technology (KIAT), and the Swiss Innovation Agency (Innosuisse) through S.Korea–Switzerland Joint Innovation Project (P0011925); National Research Foundation of Korea (NRF) through the Basic Science Program (2019R1A4A1025958, 2021R1A2C2009090).

Publisher Copyright:
© 2021 Optical Society of America under the terms of the OSA Open Access Publishing Agreement.

All Science Journal Classification (ASJC) codes

  • Atomic and Molecular Physics, and Optics


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