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dc.contributor.authorBarshan, B.en_US
dc.contributor.authorBackent, D.en_US
dc.date.accessioned2018-04-12T13:50:59Z
dc.date.available2018-04-12T13:50:59Z
dc.date.issued2000en_US
dc.identifier.issn0957-0233
dc.identifier.urihttp://hdl.handle.net/11693/38219
dc.description.abstractTwo novel methods for surface profile extraction based on multiple ultrasonic range measurements are described and compared. One of the methods employs morphological processing techniques, whereas the other employs a spatial voting scheme followed by simple thresholding. Morphological processing exploits neighbouring relationships between the pixels of the generated arc map. On the other hand, spatial voting relies on the number of votes accumulated in each pixel and ignores neighbouring relationships. Both approaches are extremely flexible and robust, in addition to being simple and straightforward. They can deal with arbitrary numbers and configurations of sensors as well as synthetic arrays. The methods have the intrinsic ability to suppress spurious readings, crosstalk and higher-order reflections, and process multiple reflections informatively. The performances of the two methods are compared on various examples involving both simulated and experimental data. The morphological processing method outperforms the spatial voting method in most cases with errors reduced by up to 80%. The effect of varying the measurement noise and surface roughness is also considered. Morphological processing is observed to be superior to spatial voting under these conditions as well.en_US
dc.language.isoEnglishen_US
dc.source.titleMeasurement Science and Technologyen_US
dc.relation.isversionofhttp://dx.doi.org/10.1088/0957-0233/11/6/330en_US
dc.subjectFeature extractionen_US
dc.subjectMap buildingen_US
dc.subjectMorphological processingen_US
dc.subjectRange measurementen_US
dc.subjectSonaren_US
dc.subjectSurface profile extractionen_US
dc.subjectUltrasonic ranging systemsen_US
dc.subjectVotingen_US
dc.subjectFeature extractionen_US
dc.subjectSonaren_US
dc.subjectSurface roughnessen_US
dc.subjectSurface structureen_US
dc.subjectUltrasonic measurementen_US
dc.subjectRange measurementen_US
dc.subjectSurface profile extractionen_US
dc.subjectUltrasonic ranging systemsen_US
dc.subjectDistance measurementen_US
dc.titleComparison of two methods of surface profile extraction from multiple ultrasonic range measurementsen_US
dc.typeArticleen_US
dc.departmentDepartment of Electrical and Electronics Engineeringen_US
dc.citation.spage833en_US
dc.citation.epage844en_US
dc.citation.volumeNumber11en_US
dc.citation.issueNumber6en_US
dc.identifier.doi10.1088/0957-0233/11/6/330en_US
dc.publisherInstitute of Physics Publishingen_US


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