Abstract

Image feature analysis to determine object distance can provide precision performance if the optical point-spread function is highly sensitive to range. In the method presented here, a specially designed mask imparts a quarter-wave phase shift over part of the input aperture, thereby inducing an interference effect with maximum sensitivity. The resultant image can be compared with a conventional image through deconvolution and least-squares fitting in order to extract a precise range estimate. This method is quantitatively examined through computer modeling and laboratory testing and is broadly applicable to a wide range of optical wave bands.

© 2007 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Improved measurement linearity and precision for AMCW time-of-flight range imaging cameras

Andrew D. Payne, Adrian A. Dorrington, Michael J. Cree, and Dale A. Carnegie
Appl. Opt. 49(23) 4392-4403 (2010)

Automatic precision measurement of spectrograms

Byron A. Palmer, Craig J. Sansonetti, and Kenneth L. Andrew
Appl. Opt. 17(15) 2280-2290 (1978)

Impact of measurement precision and noise on superresolution image reconstruction

Sally L. Wood, Shu-Ting Lee, Gao Yang, Marc P. Christensen, and Dinesh Rajan
Appl. Opt. 47(10) B128-B138 (2008)

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 (12)

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 (3)

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