Gaussian filters for off-axis digital holography via angular spectrum method

Authors

  • Esmerando R. Escoto National Institute of Physics, University of the Philippines Diliman
  • Percival F. Almoro National Institute of Physics, University of the Philippines Diliman

Abstract

Effects of the spatial filter used in the reconstruction of off-axis digital holograms are investigated. Two kinds of Gaussian filters, multiplicative and cut-off filters, were explored and compared with an ideal band-pass filter of similar dimensions in the reconstruction of digital holograms through the use of the angular spectrum method. The multiplicative Gaussian filter multiplies a Gaussian function centered at the desired peak in the Fourier domain and the Gaussian cut-off filter removes signals greater than the corresponding value of a Gaussian function. It was shown that compared to using the ideal band-pass filter, the Gaussian multiplicative filter results to less artifacts and that the Gaussian cut-off filter results to better contrast in the reconstructed image.

Downloads

Issue

Article ID

SPP-2015-PB-02

Section

Poster Session PB

Published

2015-06-03

How to Cite

[1]
ER Escoto and PF Almoro, Gaussian filters for off-axis digital holography via angular spectrum method, Proceedings of the Samahang Pisika ng Pilipinas 33, SPP-2015-PB-02 (2015). URL: https://proceedings.spp-online.org/article/view/1208.