OSA's Digital Library

Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 31, Iss. 11 — Apr. 10, 1992
  • pp: 1762–1768

Design and performance of a programmable spatial CCD filter

Takao Ando and Kazuji Wada  »View Author Affiliations


Applied Optics, Vol. 31, Issue 11, pp. 1762-1768 (1992)
http://dx.doi.org/10.1364/AO.31.001762


View Full Text Article

Enhanced HTML    Acrobat PDF (1034 KB)





Browse Journals / Lookup Meetings

Browse by Journal and Year


   


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools

Share
Citations

Abstract

Parallel signal preprocessing techniques in an image plane, as suggested by the mechanism of human vision, are used to improve the performance of a solid-state imaging sensor. In this paper a 3 × 3 neighborhood operator, by which the gray level of a particular pixel in a transformed image can be determined from the gray levels of the corresponding pixel and its neighborhood in the original image by using appropriate algorithms, is discussed. Dynamic trade-off of signal-to-noise ratio for resolution depending on the light level is realized by combining a newly designed CCD spatial filter with variable weighting circuitry. Improvement in sensitivity by as much as 11 dB at low light levels and edge enhancement at high light levels is obtained only by varying the weighting circuit gain. The design concepts and circuit layouts are also shown together with the performance data on test imagery.

© 1992 Optical Society of America

History
Original Manuscript: February 19, 1990
Published: April 10, 1992

Citation
Takao Ando and Kazuji Wada, "Design and performance of a programmable spatial CCD filter," Appl. Opt. 31, 1762-1768 (1992)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-31-11-1762

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
Log in to access OSA Member Subscription

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
Log in to access OSA Member Subscription

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
Log in to access OSA Member Subscription

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
Log in to access OSA Member Subscription

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited