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dc.creatorPandzić, M.
dc.creatorMihajlović, Dragan
dc.creatorPandzić, Jelena
dc.creatorPfeifer, N.
dc.date.accessioned2019-04-19T14:26:23Z
dc.date.available2019-04-19T14:26:23Z
dc.date.issued2016
dc.identifier.issn2194-9034
dc.identifier.urihttp://grafar.grf.bg.ac.rs/handle/123456789/803
dc.description.abstractHigh resolution (10 m and 20 m) optical imagery satellite Sentinel-2 brings a new perspective to Earth observation. Its frequent revisit time enables monitoring the Earth surface with high reliability. Since Sentinel-2 data is provided free of charge by the European Space Agency, its mass use for variety of purposes is expected. Quality evaluation of Sentinel-2 data is thus necessary. Quality analysis in this experiment is based on comparison of Sentinel-2 imagery with reference data (orthophoto). From the possible set of features to compare (point features, texture lines, objects, etc.) line segments were chosen because visual analysis suggested that scale differences matter least for these features. The experiment was thus designed to compare long line segments (e.g. airstrips, roads, etc.) in both datasets as the most representative entities. Edge detection was applied to both images and corresponding edges were manually selected. The statistical parameter which describes the geometrical relation between different images (and between datasets in general) covering the same area is calculated as the distance between corresponding curves in two datasets. The experiment was conducted for two different test sites, Austria and Serbia. From 21 lines with a total length of ca. 120 km the average offset of 6.031 m (0.60 pixel of Sentinel-2) was obtained for Austria, whereas for Serbia the average offset of 12.720 m (1.27 pixel of Sentinel-2) was obtained out of 10 lines with a total length of ca. 38 km.en
dc.publisherInternational Society for Photogrammetry and Remote Sensing,
dc.rightsopenAccess
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.sourceXXIII ISPRS Congress, Commission I
dc.subjectSentinel-2en
dc.subjectOrthophotoen
dc.subjectData Qualityen
dc.subjectEdge Extractionen
dc.subjectDistance Calculationen
dc.titleAssessment of the geometric quality of sentinel-2 dataen
dc.typeconferenceObject
dc.rights.licenseBY
dc.citation.epage494
dc.citation.issueB1
dc.citation.other41(B1): 489-494
dc.citation.spage489
dc.citation.volume41
dc.identifier.doi10.5194/isprsarchives-XLI-B1-489-2016
dc.identifier.fulltexthttp://grafar.grf.bg.ac.rs//bitstream/id/4184/801.pdf
dc.identifier.rcubconv_1862
dc.identifier.scopus2-s2.0-84987909480
dc.identifier.wos000392750100080
dc.type.versionpublishedVersion


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