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dc.contributor.authorLiu, Jin-Kingen_US
dc.contributor.authorChang, Kuan-Tsungen_US
dc.contributor.authorLin, Chinsuen_US
dc.contributor.authorChang, Liang-Chengen_US
dc.date.accessioned2017-04-21T06:49:01Z-
dc.date.available2017-04-21T06:49:01Z-
dc.date.issued2015en_US
dc.identifier.isbn978-1-4799-7929-5en_US
dc.identifier.issn2153-6996en_US
dc.identifier.urihttp://hdl.handle.net/11536/134579-
dc.description.abstractRecently, some global-scale DEM products, such as GTOPO30, ETOPO1, SRTM and ASTER GDEM have been published for geoscience applications. The latest product, ALOS DEM was announced to be available for a global coverage in 2016. This study examined the performance of ALOS-DEM in describing accurate morphometric and volumetric measurement of land features. A comparison was made on basis of DEM and DSM data of airborne fullwaveform LiDAR data. Results showed that ALOS DEM is more approximately in reality an ALOS DSM which reveals the ground envelop surface rather than the ground bare surface. The differences between ALOS DEM and LiDAR DSM are mainly from 0 to 2.75 m with a standard deviation of 1.58 m. The differences between ALOS DEM and LiDAR DEM give a bias of as large as 20m, mostly located at the areas with abrupt change of relief and mainly in the northfacing slopes. This is probably due to ALOS sensor\'s geometry in corresponding to its looking-direction. The stream networks derived from both ALOS DEM and LiDAR DEM are in good agreement. It is suggested that further studies on methods for assessing geomorphometric changes in landform structures should be developed and compared.en_US
dc.language.isoen_USen_US
dc.subjectALOS DEMen_US
dc.subjectTerrain featuresen_US
dc.subjectPositional accuracyen_US
dc.subjectAirborne LiDARen_US
dc.subjectGeomorphometryen_US
dc.titleACCURACY EVALUATION OF ALOS DEM WITH AIRBORNE LIDAR DATA IN SOUTHERN TAIWANen_US
dc.typeProceedings Paperen_US
dc.identifier.journal2015 IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM (IGARSS)en_US
dc.citation.spage3025en_US
dc.citation.epage3028en_US
dc.contributor.department土木工程學系zh_TW
dc.contributor.departmentDepartment of Civil Engineeringen_US
dc.identifier.wosnumberWOS:000371696703028en_US
dc.citation.woscount1en_US
Appears in Collections:Conferences Paper