International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B4. Istanbul 2004
constituted. And then, this signature file were used for four
classifier.
CORINE method was used (CORINE, 1995) to make landuse
map. In application of this method, 7 landuse classes were
determined. Water bodies (sea and lake), wetlands, forest,
urban areas, agricultural areas, bare lands were selected firstly.
As the olive trees covers the study area spreadingly, a seventh
class was added to the above mentioned six classes.
The Parellelpiped, Minimum distances, Maximum likelihood
and Linear discriminant classifiers were applied respectively.
Results obtained from the classified images were compared and
each of these images were controlled by field verification.
The parellelpiped classification results (Figure 6) was simple
and have not reflected the real features on the land. For
example, the urban sites on the map could not be identified,
bare lands and olive trees could not be distinguished from each
other. At some locations the vegetation cover has been seen as
black color. Because of these anomalies, this classifier was not
found proper enough for landuse mapping purpose.
The map derived using the minimum distances classifier
(Figure 7) seemed more reliable than the map produced by
parellelpiped method. In this map, settlement sites were
selectable, borders of vegetation cover, agricultural areas and
olive trees were more clear than the parellelpiped classifier
map. The Maximum likelihood classification result was much
better than the previous two maps. In the maximum likelihood
map, barelands-olive trees discrimination could be seen clearly,
boundries of agricultural areas and forest were more apparent
than both minimum distances and parellelpiped maps (Figure
8). In this map, some wetlands areas were indicated by orange
color scale. This was a cause of sedimantation on that locations.
The map that has been produced by application of the linear
discriminant classifier (Figure 9) was more suitable than the
minimum distances map and was less proper than maximum
likelihood map. In this map, urban sites were more clear than
both maximum likelihood, minimum distances and
parellelpiped maps. Olive trees and barelands borders were also
identifiable. However, forest and olive trees boundries were not
clear according to ground truth studies.
Inter)
——
Y= 206711+ 0660863X r= 0632118
Regression Parameters:
X axis: maxlike
Y axis: fisher
Coeff. of Det. 47.90 1
Std. Dev. of X 2.087050
Std. Dev. of Y 1.992803
¢.E. of Estimate 1.43034
Std. Error of Beta 0.000645
t Stat for r or Beta 1024.343038
-525.664731
1141160
1141158
t Stat for Beta <> I
Sample Size ín)
"^a ww w un " ww.
Apparent df
æ ET RE
low frequency high frequency
Figure 2. Regression of Maximum Likelihood and Linear
Regression Parameters:
Figur
discriminant classifier. tar
distar
Classification results have compared with one another and pu
regression. analysis were made. The best corelation was M
obtained between the Maximum likelihood map and the Ir
minimum distance map (= 0.79). Other regression results are a
Psp
r= 0.69, r= 0.52 and r= 0.76 for maximum likelihood-linear L
discriminant classifier, minimum distances-linear discriminant s
classifiers and maximum likelihood-parellepiped classifiers n
respectively. An interesting point related with these results is v
that the corelation between maximum likelihood and Ls
parellelpiped maps results have high corelation coefficient than 5 =
maximum likelihood and linear discriminant classifiers
corelation. This might be thingking usefullnes of parellelpiped Figure
map. But field studies have showed that parallelpiped map classii
results do not reflect real properties on the land surface. It is
thought that it may be due to the classification algorithm
differences. For m
Ye 12518504 0760582 Dr 0759755 manag
ia X axis: maxlike satelli
Y axis: mindist
57.72 5 mappi
2.087056
2.11123? proper
1.372786
Coeff. of Det. =
Std. Dev. of X =
Std. Dev. of Y =
S.E. of Estimate =
Std. Error of Beta f ; X monit«
t Stat for r or Beta = 1248.228723
t Stat for Beta <> 1 = -375, 836643
Saxple Size (n) = 1141160 techni
Apparent df = 1141158
satelli
eo
digital
^»
proper
= {437 PE RNR Very ii
low frequency high frequency
and di;
; ; ; jid nd com
Figure 3. Regression of Maximum likelihood and Minimu po
. s these
distances classifiers. I
maxim
1094