铁路工程地质遥感图像解译质量分析

高 山

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铁道工程学报 ›› 2010, Vol. 27 ›› Issue (8) : 25-28.

路网研究

铁路工程地质遥感图像解译质量分析

高山

作者信息 +

Analysis of Interpretation Quality of Remote Sensing Image for Railway Engineering Geology

GAO Shan

Author information +

文章历史 +

摘要

研究目的：遥感技术在铁路工程地质勘察过程中,由于地质现象的特殊性和解译环境的复杂性,造成工程地质特征信息的不确定性和多解性,影响了遥感图像解译质量。通过对影响解译质量的图像空间分辨率、成图比例尺和解译精度要素进行定量分析和因子评价,建立遥感图像空间分辨率与合理成图比例尺的数学关系,以及遥感图像空间分辨率与工程地质特征解译精度之间的数学关系。

研究结论：图像空间分辨率是决定影像解译精度的一个重要指标,在给定成图比例尺的条件下,可计算出最适合分辨率R的遥感图像,也可得到对遥感图像进行纠正的地形图的比例尺M,其数学关系为R={ (L*M)/2 -Rmin};图像地面分辨率RG为评价图像解译质量的关键因子,可以定量计算出遥感解译精度(工程地质特征点P、线P’、面P”),其数学关系为RG=3P’=P”/3=2a。

Abstract

Research purposes: During application of remote sensing technology in the railway engineering geological investigation，due to the particularity of geological phenomena and the complexity of interpretation environment，the uncertainty with multiple annotations happens to interpretation of the information on the engineering geological characteristics，and it seriously influences the interpretation quality of remote sensing image．Through quantitative analysis of image spatial resolution．mapping scale and interpretation precision and f．actors evaluation of interpretation quality，the mathematical relations are obtained between the image spatial resolution and the mapping scale and between the image spatial resolution and interpretation precision of remote sensing image．

Research conclusions: The image spatial resolution is an important index for the accuracy of image interpretation．Under condition a mapping scale is given，the most suitable resolution of remote sensing images call be calculated，and a topographic map scale M Can be obtained for correcting the remote sensing images．Its mathematical relationship is R={ (L*M)/2 -Rmin}．1he image ground resolution Rc is the key factor for evaluation of image quality and with it，the accuracy of remote sensing interpretation(engineering geological characteristic point P，line P’and area P”)can be 1一calculated．Its mathematical relationship is RG=3P’=P”/3=2a。

导出引用

高山. 铁路工程地质遥感图像解译质量分析[J]. 铁道工程学报, 2010, 27(8): 25-28

GAO Shan. Analysis of Interpretation Quality of Remote Sensing Image for Railway Engineering Geology[J]. Journal of Railway Engineering Society, 2010, 27(8): 25-28

中图分类号： TU753

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