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《Resources and Environment in the Yangtze Basin》 2005-04
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EXPOLORATIONS ON METHOD OF AUTO-CLASSIFICATION FOR THE MAIN TYPES OF GROUND OBJECTS IN THE THREE-GORGE REGION

ZHANG Bao-lei1,2, ZHOU Wan-cun1, MA Ze-zhong1,2 (1.Chengdu Institute of Mountain Disaster and Environment, The Chinese Academy of Sciences, Chengdu 610041,China; 2.Graduate School of The Chinese Academy of Sciences, Beijing 100039,China)  
On the basis of image preprocessing and collection of auxiliary materials, the paper put forward a kind of automatic category method for the land utilization patterns, in order to undertand the characteris- tics of complicated topography,diversification of land utilization,and great variance of remote sensing ima- ges in the Three-gorge Region. Based on the professional image-analysis software-eCognition, the goal was achieved with the classification of selected samples, the selection of the most suitable wave bands, the es- tablishment of identified functions. The decrease in the influence by the same thing with different spec- trums, different things with the same spectrum,and border transitions was also obtained. The results of classification are common raster or vector forms, which can be compatible with other raster or vector anal- ysis software conveniently. The research accomplished the classification of the main patterns of land utili- zation in the Three-gorge Region with higher precision of verification, verifying the exploration of techno- logical route and method to obtain information on land utilization in lager-scale survey by application of au- tomatic classification of the remote sensing images.
【Fund】: 国务院三峡建设委会办公室资助项目“三峡工程生态环境动态与实时监测(SX[2002]004)”子课题“三峡库区1∶5万生态环境遥感监测(SX[2002]0041)”;; 中国科学院知识创新方向性项目(KZCX2-SW-319)部分成果.
【CateGory Index】: F301;P237
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