Spatial reasoning about remotely sensed data for drainage network mapping

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dc.contributor.authorWang, Shyuanen
dc.contributor.committeecochairHaralick, R.M.en
dc.contributor.committeecochairEhrich, R.W.en
dc.contributor.committeememberCampbell, James B. Jr.en
dc.contributor.committeememberGray, F. Gailen
dc.contributor.committeememberShapiro, Linda G.en
dc.contributor.departmentComputer Science and Applicationsen
dc.date.accessioned2017-01-30T21:23:57Zen
dc.date.available2017-01-30T21:23:57Zen
dc.date.issued1984en
dc.description.abstractIn order to extract a drainage network from a LANDSAT scene of mountainous terrain, it is necessary to use an illumination model to separate the reflectance information from the topographic information in the LANDSAT data. From the reflectance information, visible stream segments can be detected. From the topographic information, ridges and valleys can be located and assigned relative elevations by an elevation growing model. Based on these, a complete elevation model can be estimated by interpolating between ridges and valleys and this estimate can be improved by making it consistent with the topographic information. Also the LANDSAT imagery can be reconstructed to evaluate the illumination model. In order to label flow directions of visible stream segments, constraints at junctions based on orientations and lengths are defined and a consistent labeling technique is used.en
dc.description.degreePh. D.en
dc.format.extentv, 188 leavesen
dc.format.mimetypeapplication/pdfen
dc.identifier.urihttp://hdl.handle.net/10919/74706en
dc.language.isoen_USen
dc.publisherVirginia Polytechnic Institute and State Universityen
dc.relation.isformatofOCLC# 11300222en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1984.W363en
dc.subject.lcshWatersheds -- Remote sensingen
dc.titleSpatial reasoning about remotely sensed data for drainage network mappingen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineComputer Science and Applicationsen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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