Wavefront reconstruction with denoising using lateral displacements of a random phase mask

Authors

  • Anne Margarette S. Maallo National Institute of Physics, University of the Philippines Diliman
  • Percival F. Almoro National Institute of Physics, University of the Philippines Diliman

Abstract

A technique for enhanced wavefront reconstruction using laterally displaced random phase mask and image denoising is described. A complex-amplitude test object is illuminated with a partially-developed speckle field. Phase-shifting of a part of the spatial frequency spectrum on a spatial light modulator is simulated and the four-bucket algorithm is used to reconstruct the object wave. Speckle noise in the reconstruction is addressed by synthesizing the images obtained corresponding to lateral displacements of a phase diffuser. Using the sum of five sets of phase-shifted images shows qualitative improvement in the reconstruction. © 2013 Samahang Pisika ng Pilipinas.

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Issue

Article ID

SPP2013-2B-1

Section

Optics and Signal Processing

Published

2013-10-23

How to Cite

[1]
AMS Maallo and PF Almoro, Wavefront reconstruction with denoising using lateral displacements of a random phase mask, Proceedings of the Samahang Pisika ng Pilipinas 31, SPP2013-2B-1 (2013). URL: https://proceedings.spp-online.org/article/view/SPP2013-2B-1.