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タイトルヨミ
LANDSAT 5 TM データ ヲ モチイタ マツエ イズモ チイキ ノ トチ ヒフク ブンルイ
日本語以外のタイトル
Land cover classifi cation of the Matsue and Izumo areas with Landsat-5 TM data
ファイル
言語
日本語
著者
野々原 伸吾
古津 年章
作野 裕司
内容記述(抄録等)
Land cover type is mapped in the Matsue and Izumo areas using Landsat-5 Thematic Mapper(TM)data from 1985 to 2000 to study the long-term change in land cover in this region. For the classification, land cover is divided into 6 classes, i.e. urban area, forest, rice fi eld, vegetable fi eld, water, and “others”. The digital number(DN)output of the Landsat-5 TM is used to make a maximum likelihood estimation of the class for each location. A land utilization map produced from an in-situ survey in this area is used for ground truth to obtain the probability density function of the 6 classes and to evaluate the classification accuracy. After an examination of band combination signifi cant for the classifi cation, either 6 bands or 5 bands(the same as the 6 bands but excluding the green band), ranging from 0.45 to 2.35 μm, are used for the classifi cation. The accuracy of the classifi cation is evaluated against the ground truth data in the Matsue City area. The accuracy is higher than 60% for urban, forest, rice fi eld and water ; the accuracy for vegetable fi eld and “others” falls below 60% . The best accuracy(higher than 90%)is obtained for the water area classification. Complicated spectral refl ectance characteristics and complex spatial distribution of the vegetable fi eld and “others” classes may be the cause of the degraded accuracy. From the long-term land cover change analysis a signifi cant increase of urban area is clearly detected.
主題
Land cover
classifi cation
Landsat-5 TM
掲載誌名
Laguna : 汽水域研究
14
開始ページ
47
終了ページ
56
ISSN
21852995
発行日
2007-12
NCID
AN10439529
出版者
島根大学汽水域研究センター
資料タイプ
紀要論文
ファイル形式
PDF
著者版/出版社版
出版社版
部局
研究・学術情報本部 エスチュアリー研究センター
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