stanbul 2004
r (SIMC) of
es Landsat-7
nd reference
r land cover
t images are
ate few steps
re 4 First
| parameters
or minimum
1 knowledge.
owing. Scale
rging means
ure 6 shows
are classified
International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B2. Istanbul 2004
-elei Band A El a i Bo i ii
Me [ues
Band 1 Band 1 FA
Band 2 Band 2 SF
Band 3 Band 3 91 4
Band 4 Band 4 93 ^l
Band 5 Band 5 93 2l
Band 6 Band 6 914
Band 7 Band 7 SN
-Threshold
1] Level for Combining : fi 0
2] Scale : fre
3] Level for Mergirig : [zo
Barren EH wetland
Agriculture
Grass M Forest
Figure 7. classification map of (a) large scale as reference (b) this study method (c) pixel based classification
That is to say, training data is replaced with feature database.
So, users don’t feel inconvenience to select training data sets.
Figure 7 (b) shows classification result using feature database.
Figure 7 (a) is large scale classification map as reference
produced by ministry of environment, figure 7 (c) is pixel based
classification map using Earth 2.0 software. Although
classification result is extracted better using editing classes, we
did barely work post-processing in view of non-specialists.
Accuracy assessment is planning in the future in consideration
of time and area a lot. Examining with the unaided eye,
accuracy of method in this study is better than that of tradition
method. It will be expected to serve convenient surroundings to
Users.
567
4. CONCLUSION
We must select training data in supervised classification. As
images are classified based on training data, we select training
sites within image that are representative of the land cover class
of interest. Users don't feel inconvenience to select training
data sets sometimes. So, automated classification method using
feature database is proposed in this study. Feature database has
statistics calculated training data. We construct statistics about
brightness, tasselled cap transformation and band ratio in rural
area, forest area, grass area, agriculture area, wetland area,
barren area and water area in now. As a result of our developed
classification software in test area, it is expected that proposed
method is higher accuracy than traditional method. It will serve
convenient surroundings to non-specialist users.