Browsing by Author "Akça, Devrim"
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FORSAT: a 3D forest monitoring system for cover mapping and volumetric 3D change detection*
Stylianidis, Efstratios; Akça, Devrim; Poli, Daniela; Hofer, Martin; Gruen, Armin W.; Sánchez Martín, Víctor; Smagas, Konstantinos; Walli, Andreas; Altan, Orhan; Jimeno, Elisa; Garcia, Alejandro (Taylor and Francis Ltd., 2019-03-01)A 3D forest monitoring system, called FORSAT (a satellite very high resolution image processing platform for forest assessment), was developed for the extraction of 3D geometric forest information from very high resolution ... -
A generic point error model for TLS derived point clouds
Özendi, Mustafa; Akça, Devrim; Topan, Hüseyin (SPIE-Int Soc Optical Engineering, 2017-06-26)This work aims at developing a generic and anisotropic point error model, which is capable of computing magnitude and direction of a priori random errors, described in the form of error ellipsoids for each individual point ... -
Monitoring of a laboratory-scale inland-delta formation using a structured-light system
Akça, Devrim; Seybold, Hansjörg J. (Blackwell Publishing Ltd., 2016-06-01)A reduced complexity model, which simulates the process of fluvial inland-delta formation, has been developed in a previous study. The results have been compared and validated with a laboratory experiment. This work ... -
Photogrammetric deformation monitoring of the second Bosphorus Bridge in Istanbul
Avşar, Özgür; Akça, Devrim; Altan, Orhan (International Society for Photogrammetry and Remote Sensing, 2014)Improving the efficiency of bridge inspection and minimizing the impact of dynamic load on the long term deterioration of the bridge structure reduces maintenance and upkeep costs whilst also improving bridge longevity and ... -
Total least squares registration of 3D surfaces
Aydar, Umut; Akça, Devrim; Altan, Mehmet Orhan; Akyılmaz, Orhan (Copernicus GmbH, 2013-10-16)Co-registration of point clouds of partially scanned objects is the first step of the 3D modeling workflow. The aim of coregistration is to merge the overlapping point clouds by estimating the spatial transformation ...
