o these
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re 4).
and
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gorithm
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ined by
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ation
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e,
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regularity of change patterns(Table 2). With the aid of this
classifier, processing times largely decreased and classification
accuracy has increased.
V. RESULTS
The classified results is shown in Figure 6. A small
misclassifications, e.g. noises near the boundaries were manually
corrected pixel-by-pixel basis. Since three land use categories
(sea water, seashore, plantations) do not appeare in this target
area, the number of classification categories were twelve.
Table 3 represents percentages and change ratios of each land
use categories between 1971 and 1979.
VI. CONCLUSIONS
AS a result of this study, the following conclusions were
obtained.
1) The renewal system of NNLI, which utilizes remote sensing
data(LANDSAT/ airborn data) and digital processing techniques,
was established. The presented renewal method is more
economical than conventional manual interpretation method.
2) Conventional maximum likelihood classification algorithm can
not acheve sufficient classification accuracy for land use(not
land cover) classification.
3) Histgram matching algorithm is highly useful for land use
classification, although it consumes more times than maximum
likelihood algorithm.
VII. REFERENCES
l. L.D.Miller,K.Nualchawee and C.Tom, "Analysis of the Dynamics of
Shifting Cultivation in the Tropical Forests of Northern
THailand Using Landscape Modeling and Classification of LANDSAT
Imagery" ,Proc. 12th Inter. Sympo. on Remote Sensing of
Environment (ERIM), p.1167-1185 (1981)
2. D.M.Carneggie,C.S.Holm, "Remote Sensing Techniques for
Monitoring Impacts of Phosphate Mining in Southeastern Idaho"
Proc. 2nd Annual Pecora Sympo. (1976)
3. K.Fukue,H.Shimoda and T.Sakata, "Radiometric Correction for
Aerial Photography", Journal of the Society of Photographic
Science and Technology of Japan,Vol.43,No.6 (1980)
4. S.Hsu,"Texture-Tone Analysis for Automated Land-Use Mapping",
Photographic Engineering and Remote Sensing, Vol.44
p.1393-1404 (1978)
5. J.C.Coiner,R.C.Bruce,"Use of Change Detection in Assessing
Development Plans : a Philippine Example", Proc. 12th Inter.
Sympo. on Remote Sensing of Environment (ERIM), p.547-565 (1978)
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