Adaptive filter to improve the performance of phase-unwrapping in digital holography

Francisco Palacios; Edison Gonçalves; Jorge Ricardo; Jose L. Valin

doi:10.1016/j.optcom.2004.04.055

Adaptive filter to improve the performance of phase-unwrapping in digital holography

Francisco Palacios, Edison Gonçalves, Jorge Ricardo, Jose L. Valin

Research output: Contribution to journal › Article › peer-review

42 Scopus citations

Abstract

A method for the filtering of the phase of fringe pattern to avoid the image corruption effect during the application of the unwrapping process is described. An algorithm is developed using a combination of sine/cosine average filtering with masking filtering techniques, taking as a weighting function of the masks the number of discontinuities by pixels which allows to preserve and intensify the borders of phase fringes of the object and to remove the isolated discontinuities and false phase fringes. The algorithm is tested using phase images obtained by the two wave length contouring holographic method.

Original language	English
Pages (from-to)	245-251
Number of pages	7
Journal	Optics Communications
Volume	238
Issue number	4-6
DOIs	https://doi.org/10.1016/j.optcom.2004.04.055
State	Published - 15 Aug 2004
Externally published	Yes

Keywords

Digital holography
Filter
Holographic contouring
Phase fringe pattern
Phase unwrapping

Access to Document

10.1016/j.optcom.2004.04.055

Cite this

@article{da361d4cde4a4b0596d8fe29de32ba56,

title = "Adaptive filter to improve the performance of phase-unwrapping in digital holography",

abstract = "A method for the filtering of the phase of fringe pattern to avoid the image corruption effect during the application of the unwrapping process is described. An algorithm is developed using a combination of sine/cosine average filtering with masking filtering techniques, taking as a weighting function of the masks the number of discontinuities by pixels which allows to preserve and intensify the borders of phase fringes of the object and to remove the isolated discontinuities and false phase fringes. The algorithm is tested using phase images obtained by the two wave length contouring holographic method.",

keywords = "Digital holography, Filter, Holographic contouring, Phase fringe pattern, Phase unwrapping",

author = "Francisco Palacios and Edison Gon{\c c}alves and Jorge Ricardo and Valin, {Jose L.}",

note = "Funding Information: We wish to thank Dr. S. Seebacher from BIAS, Bremen, Germany, for providing us with the two wavelength contouring method experimental data and to CAPES and FINEP (Brazilian research agencies) for their financial support.",

year = "2004",

month = aug,

day = "15",

doi = "10.1016/j.optcom.2004.04.055",

language = "English",

volume = "238",

pages = "245--251",

journal = "Optics Communications",

issn = "0030-4018",

publisher = "Elsevier",

number = "4-6",

}

TY - JOUR

T1 - Adaptive filter to improve the performance of phase-unwrapping in digital holography

AU - Palacios, Francisco

AU - Gonçalves, Edison

AU - Ricardo, Jorge

AU - Valin, Jose L.

N1 - Funding Information: We wish to thank Dr. S. Seebacher from BIAS, Bremen, Germany, for providing us with the two wavelength contouring method experimental data and to CAPES and FINEP (Brazilian research agencies) for their financial support.

PY - 2004/8/15

Y1 - 2004/8/15

N2 - A method for the filtering of the phase of fringe pattern to avoid the image corruption effect during the application of the unwrapping process is described. An algorithm is developed using a combination of sine/cosine average filtering with masking filtering techniques, taking as a weighting function of the masks the number of discontinuities by pixels which allows to preserve and intensify the borders of phase fringes of the object and to remove the isolated discontinuities and false phase fringes. The algorithm is tested using phase images obtained by the two wave length contouring holographic method.

AB - A method for the filtering of the phase of fringe pattern to avoid the image corruption effect during the application of the unwrapping process is described. An algorithm is developed using a combination of sine/cosine average filtering with masking filtering techniques, taking as a weighting function of the masks the number of discontinuities by pixels which allows to preserve and intensify the borders of phase fringes of the object and to remove the isolated discontinuities and false phase fringes. The algorithm is tested using phase images obtained by the two wave length contouring holographic method.

KW - Digital holography

KW - Filter

KW - Holographic contouring

KW - Phase fringe pattern

KW - Phase unwrapping

UR - http://www.scopus.com/inward/record.url?scp=3342879304&partnerID=8YFLogxK

U2 - 10.1016/j.optcom.2004.04.055

DO - 10.1016/j.optcom.2004.04.055

M3 - Article

AN - SCOPUS:3342879304

SN - 0030-4018

VL - 238

SP - 245

EP - 251

JO - Optics Communications

JF - Optics Communications

IS - 4-6

ER -

Adaptive filter to improve the performance of phase-unwrapping in digital holography

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Cite this