Phase recovery from interference fringes by using S-transform

Dursun A., Sarac Z., Topkara M. S. , ÖZDER S., Ecevit F. N.

MEASUREMENT, vol.41, no.4, pp.403-411, 2008 (Peer-Reviewed Journal) identifier identifier

  • Publication Type: Article / Article
  • Volume: 41 Issue: 4
  • Publication Date: 2008
  • Doi Number: 10.1016/j.measurement.2007.02.001
  • Journal Name: MEASUREMENT
  • Journal Indexes: Science Citation Index Expanded, Scopus
  • Page Numbers: pp.403-411
  • Keywords: interferometer, phase recovery, S-transform, fringe pattern

Abstract

The S-transform is an extension of the continuous wavelet transform (CWT) and is based on a moving and scalable localizing Gaussian window. The interference fringes are analyzed for the determination of optical 3-D surface profile by using S-transform and continuous wavelet transform algorithms. It is seen that the S-transform gave a better 3-D profile than other method and showed a higher frequency resolution. (C) 2007 Elsevier Ltd. All rights reserved.