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3. RECONSTRUCTION FROM TERRESTRIAL IMAGES
in order to reconstruct the facades of the buildings, we follow four major steps:
1) collection of terrestrial images,
2) manual 3D reconstruction using the software package PhotoModeller,
3) accuracy assessment, and
4) recording in the 3D topological data structure.
Figure 3: 3D reconstruction procedure
The images are taken with a handheld camera Kodak DCS420 (black and white) with resolution 1524x1012 and focal length 20 mm.
In the process of reconstruction, more that 300 images are taken but actually less than 100 are considered appropriate for
reconstructing (see Table 1). Most of the images are taken from street level and a small number by positioning the camera at the roof
of the highest building in the campus. Since the angle between the images taken from this roof is relatively narrow, only a few of
them are used.
Figure 4: Images and reconstructed models of the buildings of: a) the Aula, b) the faculty of Applied Physics, c) the faculty of
Mechanics and d) the Art