Charalabos Ioannidis, Styliani Verykokou, Sofia Soile, and Chryssy
Potsiou
The complexity of modern urban environments has
led to the introduction of 3D Land Information Systems (LISs), which tend
to replace traditional 2D LIS architectures for the purposes of urban
planning and regeneration, land administration, real estate management and
civil development. Both the need for 3D visualization of the geometry of
buildings in various time instances through the years and the need for
acquisition of 3D models in various levels of detail (LoDs), which not only
fulfill the requirements of the various users but also they speed up the
visualization process, are obvious. Thus, additional dimensions, that is,
for time and scale, need to be supported by a modern LIS. This paper
introduces a 5D modelling pipeline that may be adopted by a multi-purpose
LIS for the selective creation of 3D models of an urban area in various
time instances and at various LoDs, enriched with cadastral and other
spatial data. The methodology is based on automatic change detection
algorithms for spatial-temporal analysis of the spatial changes that took
place in subsequent time periods, using image orientation, dense image
matching and structure from motion algorithms; the procedure requires
photogrammetric stereo plotting, implements procedural modelling and relies
on the availability of overlapping aerial and terrestrial imagery, ground
control points and cadastral information. Finally, an application based on
the proposed methodology in an urban area in Greece is presented and the
future work is discussed.
Categories and Subject Descriptors (according to ACM CCS): I.3.5
[Computational Geometry and Object Modeling]: Modeling Packages, I.3.6
[Methodology and Techniques]: Graphics data structures and data types,
I.3.7 [Three-Dimensional Graphics and Realism]: Color, shading, shadowing,
and texture.
full paper
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