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dc.contributor.authorAkça, Mehmet Devrimen_US
dc.contributor.authorÖzendi, Mustafaen_US
dc.contributor.authorTopan, Hüseyinen_US
dc.date.accessioned2016-10-24T21:41:26Z
dc.date.available2016-10-24T21:41:26Z
dc.date.issued2016
dc.identifier.citationÖzendi, M., Akça, M. D. & Topan, H. (2016). An emprical point error model for TLS derived point clouds. Paper presented at the International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 41(B5), 557-563. doi:10.5194/isprsarchives-XLI-B5-557-2016en_US
dc.identifier.issn1682-1750
dc.identifier.urihttps://hdl.handle.net/11729/1139
dc.identifier.urihttp://dx.doi.org/10.5194/isprsarchives-XLI-B5-557-2016
dc.description.abstractThe random error pattern of point clouds has significant effect on the quality of final 3D model. The magnitude and distribution of random errors should be modelled numerically. This work aims at developing such an anisotropic point error model, specifically for the terrestrial laser scanner (TLS) acquired 3D point clouds. A priori precisions of basic TLS observations, which are the range, horizontal angle and vertical angle, are determined by predefined and practical measurement configurations, performed at real-world test environments. A priori precision of horizontal (σθ) and vertical (σα) angles are constant for each point of a data set, and can directly be determined through the repetitive scanning of the same environment. In our practical tests, precisions of the horizontal and vertical angles were found as σθ=±36.6 and σα=±17.8, respectively. On the other hand, a priori precision of the range observation (σρ) is assumed to be a function of range, incidence angle of the incoming laser ray, and reflectivity of object surface. Hence, it is a variable, and computed for each point individually by employing an empirically developed formula varying as σρ=±2a'12 mm for a FARO Focus X330 laser scanner. This procedure was followed by the computation of error ellipsoids of each point using the law of variance-covariance propagation. The direction and size of the error ellipsoids were computed by the principal components transformation. The usability and feasibility of the model was investigated in real world scenarios. These investigations validated the suitability and practicality of the proposed method.en_US
dc.description.sponsorshipThis research was funded by TUBITAK - The Scientific and Technological Research Council of Turkey (Project ID: 115Y239) and by the Scientific Research Projects of Bulent Ecevit University (Project ID: 2015-47912266-01)en_US
dc.language.isoengen_US
dc.publisherInternational Society for Photogrammetry and Remote Sensingen_US
dc.relation.isversionof10.5194/isprsarchives-XLI-B5-557-2016
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectAnisotropicen_US
dc.subjectError ellipsoiden_US
dc.subjectError modelen_US
dc.subjectIncidence angleen_US
dc.subjectRangeen_US
dc.subjectReflectanceen_US
dc.subjectAnisotropyen_US
dc.subjectErrorsen_US
dc.subjectLaser applicationsen_US
dc.subjectRandom errorsen_US
dc.subjectReflectionen_US
dc.subjectRemote sensingen_US
dc.subjectScanningen_US
dc.subjectSeebeck effecten_US
dc.subjectThalliumen_US
dc.subjectAnisotropicen_US
dc.subjectError ellipsoidsen_US
dc.subjectSurveying instrumentsen_US
dc.titleAn emprical point error model for TLS derived point cloudsen_US
dc.typeconferenceObjecten_US
dc.description.versionPublisher's Versionen_US
dc.relation.journalInternational Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciencesen_US
dc.contributor.departmentIşık Üniversitesi, Mühendislik Fakültesi, İnşaat Mühendisliği Bölümüen_US
dc.contributor.departmentIşık University, Faculty of Engineering, Department of Civil Engineeringen_US
dc.contributor.authorID0000-0002-1510-8677
dc.identifier.volume41
dc.identifier.issueB5
dc.identifier.startpage557
dc.identifier.endpage563
dc.peerreviewedYesen_US
dc.publicationstatusPublisheden_US
dc.relation.publicationcategoryKonferans Öğesi - Uluslararası - Kurum Öğretim Elemanıen_US
dc.contributor.institutionauthorAkça, Mehmet Devrimen_US
dc.relation.indexWOSen_US
dc.relation.indexScopusen_US
dc.relation.indexConference Proceedings Citation Index – Science (CPCI-S)en_US
dc.relation.indexConference Proceedings Citation Index – Social Science & Humanities (CPCI-SSH)en_US
dc.description.wosidWOS:000392739800080


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