FRACTAL DIMENSION OF URBAN EXPANSION BASED ON REMOTE SENSING IMAGES
IACOB I. CIPRIAN1, SANDA ROŞCA1, PETREA DĂNUŢ1,
BLĂGEANU ALEXANDRA2
1 Babes-Bolyai University of Cluj-Napoca, Faculty of Geography and
Geology, Department of Geography, Mihail Kogălniceanu nr. 1, 400084,
Cluj-Napoca, Romania, e-mail: iacob.ionut.ciprian@gmail.com, rosca_sanda@yahoo.com
2 Alexandru Ioan Cuza University of Iaşi, Faculty of Geography and
Geology, Department of Geography, Carol I Boulevard, No. 20 A, Iaşi, Romania,
e-mail: alexandrablageanu@gmail.com
Abstract: Fractal Dimension of Urban Expansion Based on Remote Sensing Images:
In Cluj-Napoca city the process of urbanization has been accelerated during the
years and implication of local authorities reflects a relevant planning policy.
A good urban planning framework should take into account the society demands and
also it should satisfy the natural conditions of local environment. The
expansion of antropic areas it can be approached by implication of 5D variables
(time as a sequence of stages, space: with x, y, z and magnitude of phenomena)
into the process, which will allow us to analyse and extract the roughness of
city shape. Thus, to improve the decision factor we take a different approach in
this paper, looking at geometry and scale composition. Using the remote sensing
(RS) and GIS techniques we manage to extract a sequence of built-up areas (from
1980 to 2012) and used the result as an input for modelling the spatialtemporal
changes of urban expansion and fractal theory to analysed the geometric
features. Taking the time as a parameter we can observe behaviour and changes in
urban landscape, this condition have been known as self-organized – a condition
which in first stage the system was without any turbulence (before the antropic
factor) and during the time tend to approach chaotic behaviour (entropy state)
without causing an disequilibrium in the main system.
Key-words: fractal dimension, urban growth, image processing, urban
growth
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