Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

Reduction of speckle noise in multiwavelength contouring

Not Accessible

Your library or personal account may give you access

Abstract

We report on a method that can be used to improve the result of multiwavelength contouring in the case of objects with rough surface. It is based on the combined evaluation of multiple measurements with varying direction of illumination. While the individual measurements share the same systematics with respect to the shape of the investigated object, the noise arising from speckle decorrelation fluctuates statistically and hence can be reduced by means of averaging. For the case of three illumination directions we show that weighted averaging of the measured phase distributions enhances the signal-to-noise ratio by approximately 3 dB.

© 2012 Optical Society of America

Full Article  |  PDF Article
More Like This
Noise reduction in high-resolution speckle displacement measurements through ensemble averaging

León Schweickhardt, Andreas Tausendfreund, Dirk Stöbener, and Andreas Fischer
Appl. Opt. 60(7) 1871-1880 (2021)

Efficient reduction of speckle noise in Optical Coherence Tomography

Maciej Szkulmowski, Iwona Gorczynska, Daniel Szlag, Marcin Sylwestrzak, Andrzej Kowalczyk, and Maciej Wojtkowski
Opt. Express 20(2) 1337-1359 (2012)

Improved white-light interferometry on rough surfaces by statistically independent speckle patterns

Bernhard Wiesner, Ondrej Hybl, and Gerd Häusler
Appl. Opt. 51(6) 751-757 (2012)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (4)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (11)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved