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Proceedings Paper

New amplitude weighted filtering technique for noise reduction in images with 2π phase jumps
Author(s): Armando Albertazzi; Rui Seara; Policarpo B. Uliana
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Paper Abstract

This paper presents an interesting algorithm, suitable for substantial noise reduction in images with 2(pi) phase jumps. It first applies a cosine transform to the phase map associated with the corresponding fringe pattern then filters (low pass) the resulting images and computes phase again from both images. Since the cosine transform is invariant to a 2(pi) phase jumps the low pass filtering does not distort the measuring signal in such regions.

Paper Details

Date Published: 10 December 1993
PDF: 12 pages
Proc. SPIE 2003, Interferometry VI: Techniques and Analysis, (10 December 1993); doi: 10.1117/12.165466
Show Author Affiliations
Armando Albertazzi, Univ. Federal de Santa Catarina (Brazil)
Rui Seara, Univ. Federal de Santa Catarina (Brazil)
Policarpo B. Uliana, Univ. Federal de Santa Catarina (Brazil)

Published in SPIE Proceedings Vol. 2003:
Interferometry VI: Techniques and Analysis
Osuk Y. Kwon; Gordon M. Brown; Malgorzata Kujawinska, Editor(s)

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