Abstract

Matched filtering is a robust technique to identify and locate objects in the presence of noise. Traditionally, the amplitude of the correlation peak is used for detection of a match. However, when distinguishing objects that are not significantly different or detecting objects under high noise imaging conditions, the normalized peak amplitude alone may not provide sufficient discrimination. In this paper, we demonstrate that measurements derived from the shape of the correlation peak offer not only higher levels of discrimination but also accurate position estimation. To our knowledge, this is the first time such features have been used in a real-time system, like the National Ignition Facility, where such techniques enable real-time, accurate position estimation and alignment under challenging imaging conditions. It is envisioned that systems utilizing matched filtering will greatly benefit from incorporating additional shape based information.

© 2010 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Detection and tracking of the backreflection of potassium dihydrogen phosphate images in the presence or absence of a phase mask

Abdul A. S. Awwal, Wilbert A. McClay, Walter S. Ferguson, James V. Candy, Thad Salmon, and Paul Wegner
Appl. Opt. 45(13) 3038-3048 (2006)

Hardware accelerated optical alignment of lasers using beam-specific matched filters

Abdul A. S. Awwal, Kenneth L. Rice, and Tarek M. Taha
Appl. Opt. 48(27) 5190-5196 (2009)

Centroid stabilization for laser alignment to corner cubes: designing a matched filter

Abdul A. S. Awwal, Erlan Bliss, Gordon Brunton, Victoria Miller Kamm, Richard R. Leach, Roger Lowe-Webb, Randy Roberts, and Karl Wilhelmsen
Appl. Opt. 56(1) A41-A51 (2017)

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

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

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 OSA member, or as an authorized user of your institution.

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

Figures (10)

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

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

Tables (2)

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

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

Equations (10)

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

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

Metrics

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

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