Entropy Error Model of Planar Geometry Features in GIS

查看全文 作　　者：LI Dajun GUAN Yunlan GONG Jianya DU Daosheng LI Dajun,Ph.D candidate, National Laboratory for Information Engineering in Surveying, Mapping and Remote Sensing, Wuhan University,129 Luoyu Road, Wuhan 430079,China.

出　　处：《Geo-Spatial Information Science》索引2003年第6卷第2期,共5页

基　　金：ProjectsupportedbytheNationalNaturalScienceFoundationofChina (No .40 0 71 0 68) . 摘　　要：Positional error of line segments is usually described by using 'g-band', however, its band width is in relation to the confidence level choice. In fact, given different confidence levels, a series of concentric bands can be obtained. To overcome the effect of confidence level on the error indicator, by introducing the union entropy theory, we propose an entropy error ellipse index of point, then extend it to line segment and polygon, and establish an entropy error band of line segment and an entropy error donut of polygon. The research shows that the entropy error index can be determined uniquely and is not influenced by confidence level, and that they are suitable for positional uncertainty of planar geometry features. 关键词：平面几何学 GIS 地理信息系统熵误差模型熵误差椭圆

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Entropy Error Model of Planar Geometry Features in GIS

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