Options
Magnitude and direction of motion with speckle correlation and the optical fractional Fourier transform
Date Issued
2005-05-10
Date Available
2011-12-06T17:14:41Z
Abstract
The optical fractional Fourier transform (OFRT) in combination with speckle photography has previously been used to measure the magnitude of surface tilting and translation. Previous OFRT techniques used
to determine motion have not been able to discern the direction of the tilt and translation. A simple new approach involving use of correlation is presented to overcome this limitation. Controlled variation of the
minimum resolution and dynamical range of measurement is demonstrated. It is then experimentally confirmed that if a rigid body’s motion is captured by two OFRT systems of different orders, the direction and magnitude of both the tilting and the in-plane translation motion of the body can be independently determined without a priori knowledge. The experimental results confirm the validity of previous theoretical predictions
Sponsorship
Science Foundation Ireland
Irish Research Council for Science, Engineering and Technology
Other Sponsorship
Enterprise Ireland
Type of Material
Journal Article
Publisher
Optical Society of America
Journal
Applied Optics
Volume
44
Issue
14
Start Page
2720
End Page
2727
Copyright (Published Version)
2005 Optical Society of America
Subject – LCSH
Fourier transform optics
Speckle
Metrology
Web versions
Language
English
Status of Item
Not peer reviewed
ISSN
0003-6935
1539-4522
This item is made available under a Creative Commons License
File(s)
No Thumbnail Available
Name
Magnitude and direction of motion using speckle correlation and the optical fractional Fourier transform.pdf
Size
1.69 MB
Format
Owning collection
Scopus© citations
29
Acquisition Date
Mar 28, 2024
Mar 28, 2024
Views
1443
Acquisition Date
Mar 28, 2024
Mar 28, 2024
Downloads
479
Last Week
5
5
Last Month
17
17
Acquisition Date
Mar 28, 2024
Mar 28, 2024