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The
increasing number of objects involved in deformation processes in highly
populated areas has increased the demand for rapidly working and easily
usable deformation measurement systems.
This
demand is associated with a higher degree of automation of monitoring,
analysis and interpretation.
For
monitoring of an object involved in a deformation process the object and
its surrounding has to be modeled, which means dissecting the continuum
by discrete points in such a way that the points sufficiently
characterize the object, and that the movements of the points represent
the movements and distortions of the object.
The
framework targeted in this project uses two types of sensor systems and/or
a combination of them to address the deformation problem: image assisted
theodolites (videotheodolites) and raster laser scanners.
In
a complex measurement system, the selection of a suitable sensor or
suitable measurement modes is a highly non-trivial task. To provide user
decision support, information about the object respectively the scene
has to be collected in an automated way. For this task we suggest
cognitive vision techniques.
A
process which sets up a description of the movements and distortions of
the object can be coupled to deformation monitoring, followed by an
assessment of the deformation. This process must be outlined in a
framework of local-to-global information integration, by grouping
locally measured deformation into a more informative deformation pattern.
Especially
when automatic monitoring is in procedure, the deformation
classification can lead to important decisions.
Such
a measurement system consists of different components: the sensors, a
system control component, a system for cognitive vision, a system for
deformation analysis and assessment, and the knowledge base.
The
first phase of the project will contain an extensive analysis of the
problem and the knowledge necessary for developing solutions. In the
next phase a suitable model for the knowledge-based and cognitive vision
system will be investigated.
Tests,
experiments and evaluations while the whole project phase shall
demonstrate the advantages of a deformation measurement system which is
supported by knowledge-based
and
cognitive vision techniques. |