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中文摘要：
首先确立线状要素多尺度表达的实现方式;然后紧紧围绕线状要素多尺度表达的实现流程,分析线状要素多尺度表达不确定性的来源,并利用误差传播规律建立线状要素多尺度表达误差传播规律;最后通过实验得出线状要素在尺度扩展中不确定性的变化规律.为线状要素多尺度表示的质量评价提供了理论基础.
英文摘要：
Firstly, the implementation way of multi-scale representation of linear feature is determined. Secondly, based on the procedure of multi-scale representation of linear feature, the source of uncertainty is analyzed, and the error spreading law of multi-scale representation of linear feature is established with error spreading law. Finally, the change rule of the uncertainty in the upscaling of linear feather is obtained by experiment. This paper provides the theory basis of quality evaluation of multi-scale representation of linear feature.
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