| 矢量缓冲区不确定性传播的置信带模型 |
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| 引用本文： | 梅士员,江南.矢量缓冲区不确定性传播的置信带模型[J].遥感学报,2004,8(4):289-294. |
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| 作者姓名： | 梅士员 江南 |
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| 作者单位： | 1. 南京大学城市与资源学系,南京,210093
2. 南京大学城市与资源学系,南京,210093;中国科学院南京地理与湖泊研究所,南京,210008 |
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| 基金项目： | 中国科学院知识创新工程领域前沿项目资助，编号CXNIGLAS A0 2 0 12。 |
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| 摘 要： | 提出用缓冲区整体置信带对GIS中矢量缓冲区进行可靠性评定的方法 ,分别研究了点状和线状目标缓冲区整体置信带的情况。提出用一类似相对误差的量K值来对缓冲区整体置信带进行定量分析 ,并推导出具体的计算公式 ,最后的算例和分析部分重点考察对线段缓冲区K值产生影响的各因子 ,并得出直线端点误差和置信水平是影响缓冲区不确定性传播的关键因素
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| 关 键 词： | GIS 矢量缓冲区 不确定性传播 置信带 |
| 文章编号： | 1007-4619(2004)04-0289-06 |
| 收稿时间： | 2003/1/13 0:00:00 |
| 修稿时间： | 2003年1月13日 |
The Confidence Band Model of Unceertainty Propagation on Vector Buffer in GIS |
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| MEI Shi-yuan and JIANG Nan.The Confidence Band Model of Unceertainty Propagation on Vector Buffer in GIS[J].Journal of Remote Sensing,2004,8(4):289-294. |
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| Authors: | MEI Shi-yuan and JIANG Nan |
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| Institution: | Depariment of Urban and Resource Science,Nanjing University,Nanjing 210093,China;Depariment of Urban and Resource Science,Nanjing University,Nanjing 210093,China;Nanjing Institute of Geography and Limnology,Chinese Academy of Sciences,Nanjing 210008,China |
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| Abstract: | The confidence band model of uncertainty propagation on vector buffer in GIS is proposed in this paper. The buffer confidence band of point feature and liner feature is discussed respectively. A new coefficient, K , similar to relative accuracy is suggested to estimate confidence band quantitatively. The formula to compute the coefficient is introduced. The test section mainly discusses the effect of the factors, finally this paper concludes that the error of line vertex and confidence level is the key factor to the uncertainty propagation during the buffer operation. |
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| Keywords: | GIS vector buffer uncertainty propagation confidence band |
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