Poplave septembra 2010 – obdelava nemerskih fotografij s fotogrametričnim DMR in lidarskimi podatki

The floods of september 2010 – acquisition of data from non-metric images with photogrammetric DTM and LIDAR

Author(s):

Mihaela Triglav Čekada, Matija Zorn

Abstract:

In September 2010, one of the greatest floods in recent decades affected Slovenia, following intense rain between September 16th and 19th. Members of the Anton Melik Geographical Institute of the Scientific Research Centre of the Slovenian Academy of Sciences and Arts made their first terrestrial oblique imaging of the floods on Ljubljansko Barje (the Ljubljana moor) from Sv. Ana hill over Podpeč on the September 20th, 2010. The floods on the Ljubljana moor, Radensko polje and Dobrepolje were later also covered with handheld imaging made from helicopter on September 23rd, 2010. Terrestrial imaging was made in the time of the highest waters and the imaging from helicopter when the floods were retreating. The floods on Ljubljana moor around Podpeč are presented. Images made with the Canon PowerShot SX10 IS non-metric camera were used. The camera was calibrated afterwards, but the calibration data could not be used directly due to not knowing the parameters of zoom in the time of imaging.The flooding boundary was measured from the non-metric images with the interactive orientation of image on the DEM. The results of interactive orientation of non-metric images made with the photogrammetrically derived DEM with a cell size of 5 m × 5 m and LiDAR derived DEM with a cell size of 1 m × 1 m are presented. The evaluation of the method for the 3D data acquisition is also made.

Keywords:

interactive orientation, non-metric image processing, DTM, floods in 2010, Ljubljana moor

DOI: 10.15292/geodetski-vestnik.2012.04.802-813

Citation:

Mihaela Triglav Čekada, Matija Zorn (2012). Poplave septembra 2010 – obdelava nemerskih fotografij s fotogrametričnim DMR in lidarskimi podatki. | The floods of september 2010 – acquisition of data from non-metric images with photogrammetric DTM and LIDAR. Geodetski vestnik, 56 (4), 802-813. DOI: 10.15292/geodetski-vestnik.2012.04.802-813