International Archives of the Photogrammetry, Remote Sensing
and Spatial Information Sciences, Vol XXXV, Part B4. Istanbul 2004
5. ANALYSIS
Statistical indicators of automatic classification (dendogram,
error ellipsis, co-occurrence matrices) make us aware of the
fact that the combination of input data containing TIR
component yield better results than those not containing it. It
is obvious that the basic topological objects can be well
differentiated in the field through automatic classification
itself. Hence, the resulting presentation of the field with 3
classes illustrate very well the relationships in the field. Three
File Optica te ly
Highest Cooccurrence: | ij I 1 Lowest Separabilituf 11 EI
p.i
623,302
246.579 - 155.761 2d. o6
BEL 3 555
presented. classes are (given in the chapter 3): vegetation, zum ir
À : x file Options Welp |
rocks and stones, and bare soil. The best result is obtained Mishest Cooccurrences PETITS Lowest Sersesbilitef T= LI 10
through automatic classification of the following input data
combinations: TIR, 3 VNIR and 2 Volter/Unsharp filtered
presentations (VNIR-G, VNIR-R).
s D -— Tl 2448 Han ~§74,216
File View Options Help Ur [ wen wl eu EC
Shuster eli 0.00 49,66 Miche 148,99 198,66 : EN inel,
ER: (045.460 ^ : : , =
[) 6 (6)<14,26%)
a ce Fgure 12. Coocurenc matrix with minimum and maximum Fist
5 ox SLR coocurenci and separabiliti of best auto-corelation with 3 IR, R,
[12 (X 9.740 classes (GREEN: vegetation, BLUE: rocks and stones, chan
Bl 4 (4)(28.79%) BLACK: bear land)
6. CONCLUSION
Fi— Iu |
Out of the above given data it can be seen that no |
Figure 10. Dendogram of the best auto-classification combination includes DOF. It has been done on purpose |
= is because the observed part of the field (due to large height
tuesg C differences) is largely covered with shadows that make a
Fils Uptime pete good insight into the field impossible and introduce
wR anomalies into the radiometric processing. The contribution
wo es ere f Saez E 7 "s "Ere ion of TR ea EN SOT sendy in he V ME |
sir ree | crum | mae | mn se ci C ass] ication ane t vous h simple connection 9 indivi na | Ë
RE | | m m | Ar an | aires 2 classes after the classification. While the result of the |
| Ae [Hes rn n [i 094 automatic classification of VNIR components only indicates |
+ UE > | cm ae 1e Sm the connection between the series of images making the
rdi s Fuse WAGE imas ZZ ; mosaic, this line is not visible in the automatic classification
of TIR and VNIR components. The influence ol the terrain
parts covered with shadows is also less expressed in the |
re results of automatic classification with TIR components. The |
- inaccuracy of the automatic classification can be noticed in
2154 s the class snow that is attached to the rocks.
“631 206.579 | 497,506 06.004 7
SS EUG | 3013.753 A = ne Figui
UU IM E RH um E redu
we m * EN 874,218 22st , 3U4 G R E E N
Fgure 11. Coocurenc matrix with minimum and maximum
coocurenci and separabiliti of best auto-corelation with all
classes Krauss,
Bonn
Castlelm
1258
5
125.536
54.771
125. 761
À rames EATER totu orsus
Figure 13. Result of auto-classification with all mentioned
inputs except TIR component
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Hall Inte
Kasser, |
& Franci
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