Abstract

The simple and precise fringe-illumination technique has been implemented to retrieve the missing information of a two-dimensional object. The object placed in a 4f optical system is illuminated with fringes, generated by a reflective-mode spatial light modulator. A set of three fringes, shifted in phase, sequentially illuminate the object, and correspondingly, three images are captured through CCD. The fringes illuminate the object and higher spatial frequencies primarily fall outside the aperture along horizontal direction heterodyne into the passband. To heterodyne higher spatial frequencies in a vertical direction, the fringes are swapped by 90 deg, and three further images are captured through CCD. These recorded images are processed to retrieve the object information using the spectrum-domain image-processing algorithm. The final image is higher in resolution compared to the band-limited image. For validity of technique, the theoretical concept was simulated and supported through experimental results. The presented system is stable against environmental factors due to on-axis geometry.

© 2017 Optical Society of America

Full Article  |  PDF Article
OSA Recommended Articles
Coherent superresolution imaging via grating-based illumination

Jeffrey P. Wilde, Joseph W. Goodman, Yonina C. Eldar, and Yuzuru Takashima
Appl. Opt. 56(1) A79-A88 (2017)

Phase-shift estimation in sinusoidally illuminated images for lateral superresolution

Sapna A. Shroff, James R. Fienup, and David R. Williams
J. Opt. Soc. Am. A 26(2) 413-424 (2009)

Synthetic aperture superresolution with multiple off-axis holograms

Vicente Mico, Zeev Zalevsky, Pascuala García-Martínez, and Javier García
J. Opt. Soc. Am. A 23(12) 3162-3170 (2006)

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 (5)

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

Equations (36)

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