An optical/digital incoherent image processing system for an extended depth of field

dc.contributor.authorMotamedi, Masouden
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2021-10-26T20:09:55Zen
dc.date.available2021-10-26T20:09:55Zen
dc.date.issued1985en
dc.description.abstractA severely defocused incoherent system has isolated zeros in its optical transfer function(OTF); therefore, an exact inverse filtering cannot be performed. It has been established that, by using an annular aperture in an optical system, the depth of focus can be extended. Isolated zeros in the OTF can therefore be avoided by choosing an annular aperture with a proper radius ratio. However, in the process of increasing the depth of focus of the system, this method results in a loss of image contrast. An annular pass filter can be used to restore this loss in contrast. A simple hybrid optical/digital image processing system in which a TV camera is coupled with an annular aperture is considered. The annular-pass filtering to compensate for the loss of contrast is performed by a digital computer. The experimental results are presented.en
dc.description.degreeM.S.en
dc.format.extentvii, 114 leavesen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/106043en
dc.language.isoenen
dc.publisherVirginia Polytechnic Institute and State Universityen
dc.relation.isformatofOCLC# 12937150en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1985.M678en
dc.subject.lcshImage processing -- Digital techniquesen
dc.subject.lcshImaging systemsen
dc.titleAn optical/digital incoherent image processing system for an extended depth of fielden
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameM.S.en

Files

Original bundle
Now showing 1 - 1 of 1
Loading...
Thumbnail Image
Name:
LD5655.V855_1985.M678.pdf
Size:
9.78 MB
Format:
Adobe Portable Document Format

Collections