Işık Yazarı "Akça, Mehmet Devrim" WOS İndeksli Bildiri Koleksiyonu İçin Listeleme
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Co-registration of 3d point clouds by using an errors-in-variables model
Akça, Mehmet Devrim; Aydar, Umut; Altan, Mehmet Orhan; Akyılmaz, Orhan (Copernicus Gesellschaft MBH, 2012-08-25)Co-registration of point clouds of partially scanned objects is the first step of the 3D modeling workflow. The aim of co-registration is to merge the overlapping point clouds by estimating the spatial transformation ... -
Determining pull - out deformations of bonded metal anchors embedded in concrete by means of photogrammetry
Akça, Mehmet Devrim; Avşar, Edip Özgür; Altan, Mehmet Orhan; Doğan, Umut Anıl (International Society for Photogrammetry and Remote Sensing, 2012)Chemical anchorages are applied in many engineering implementations, particularly strengthening of reinforced concrete structures. During strengthening procedure; chemical anchorages should be tested, since they supply to ... -
An emprical point error model for TLS derived point clouds
Akça, Mehmet Devrim; Özendi, Mustafa; Topan, Hüseyin (International Society for Photogrammetry and Remote Sensing, 2016)The 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 ... -
A generic point error model for TLS derived point clouds
Özendi, Mustafa; Akça, Mehmet 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 ... -
Laboratory flume experiment with a coded structured light system
Akça, Mehmet Devrim; Seybold, Hansjorg (International Society for Photogrammetry and Remote Sensing, 2012)The topography of inland deltas is influenced chiefly by the water-sediment balance in distributary channels and local evaporation and seepage rates. In a previous study, a reduced complexity model has been applied to ... -
A precision estimation method for volumetric changes
Akça, Mehmet Devrim; Stylianidis, Efstratios; Gruen, Armin W.; Altan, Mehmet Orhan; Hofer, Martin; Smagas, Konstantinos; Sanchez Martin, Victor; Walli, Andreas; Jimeno, Elisa; Garcia, Alejandro (IEEE, 2019-06)Earth surface changes are often computed by comparing the sequences of digital elevation models (DEMs) so called the DEM of difference (DoD) method. We present an operational DEM generation, co-registration and DoD comparison ...