Abstract

In this paper, the optical transfer function (OTF) of a digital imaging system is determined by different frequencies’ sinusoidal gratings in two stages of before and after the Nyquist frequency. Before the Nyquist frequency, modulation transfer function (MTF) and visibility are equivalent, and the phase transfer function (PTF) does not change with phase variation of the initial object gratings. Sampling of the grating with frequency above the Nyquist frequency gives rise to sampling moiré fringes. In this situation, the MTF is unusually bigger than 1 and is not equivalent to the visibility of the sampling moiré, but the PTF shows two different behaviors before and after the Nyquist frequency. Before the Nyquist frequency, the PTF does not depend on the initial phase variation of the grating, but after the Nyquist frequency, the PTF depends on the initial phase variation. Therefore, the PTF of the sampling moiré is proposed for phase variation detection.

© 2017 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Applications of the phase transfer function of digital incoherent imaging systems

Vikrant R. Bhakta, Manjunath Somayaji, and Marc P. Christensen
Appl. Opt. 51(4) A17-A26 (2012)

Effects of sampling on the phase transfer function of incoherent imaging systems

Vikrant R. Bhakta, Manjunath Somayaji, and Marc P. Christensen
Opt. Express 19(24) 24609-24626 (2011)

Direct determination of modulation transfer function by moiré deflectometry

I. Glatt, A. Livnat, and O. Kafri
J. Opt. Soc. Am. A 2(2) 107-110 (1985)

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 (16)

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 (1)

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 (18)

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