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

Displacement measurement of speckles using a 2-D level-crossing technique

Not Accessible

Your library or personal account may give you access

Abstract

This paper proposes a new displacement method for measuring speckles using a 2-D level-crossing technique. The crossing points in space of the speckle intensity traversing a specified level are analyzed twodimensionally by using a TV-computer system. In an actual analysis, an occurrence rate histogram of the distance vectors determined by connecting the crossing points obtainable before and after displacement of speckles is investigated. It is found that the vectorial displacement of speckles can be measured from the position of the maximum occurrence in the bivariate histogram with respect to the magnitude and angle by which the displacement vector is characterized. The vectorial displacement of speckles is related to the movement of an object.

© 1983 Optical Society of America

Full Article  |  PDF Article
More Like This
Vectorial measurements of speckle displacement by the 2-D electronic correlation method

Nobukatsu Takai and Toshimitsu Asakura
Appl. Opt. 24(5) 660-665 (1985)

High-resolution rotation-angle measurement of a cylinder using speckle displacement detection

Akihiro Hayashi and Yoichi Kitagawa
Appl. Opt. 22(22) 3520-3525 (1983)

Error optimization in the detection of level crossing through the measurement of n(2)(T)

J. J. Sanz and M. A. Rebolledo
Appl. Opt. 22(10) 1555-1561 (1983)

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 (8)

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 (4)

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