Model for precise detection of bone edges

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dc.contributor.authorRamesh, Visvanathanen
dc.contributor.committeechairEhrich, Roger W.en
dc.contributor.committeechairBarber, Donald L.en
dc.contributor.committeememberYu, Kai Boren
dc.contributor.committeememberTront, Joseph G.en
dc.contributor.departmentElectrical Engineeringen
dc.date.accessioned2014-03-14T21:28:43Zen
dc.date.adate2013-02-06en
dc.date.available2014-03-14T21:28:43Zen
dc.date.issued1987-02-04en
dc.date.rdate2013-02-06en
dc.date.sdate2013-02-06en
dc.description.abstractA mathematical model which is used to detect bone edges accurately is described in this thesis. This model is derived by assuming the X-ray source to be a square region. It is shown that for an ideal X-ray source (point source), the bone edge lies exactly at the location of maximum first derivative of the imaged object's transmission function. However, for the non-ideal case, it is shown that the bone edge does not lie at the maximum first derivative location. Also, it is shown that an offset can be calculated from the edge parameters. The Marr- Hildreth edge detector is used to detect the initial estimates for edge location. Precise estimates are obtained by using the facet model. The offset is then calculated and applied to these estimates.en
dc.description.degreeMaster of Scienceen
dc.format.extentix, 102 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-02062013-040221en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-02062013-040221/en
dc.identifier.urihttp://hdl.handle.net/10919/40957en
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1987.R355.pdfen
dc.relation.isformatofOCLC# 16263146en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1987.R355en
dc.subject.lcshBones -- Radiographyen
dc.subject.lcshX-ray spectroscopyen
dc.titleModel for precise detection of bone edgesen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineElectrical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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