多源遥感的墓葬遗址区结构性线状特征提取——以汉五陵原为例

Structural line feature extracting of historical tomb sites based on multi-source remote sensing data:A case study on Wuling Hills of West Han Dynasty

目的研究古墓葬遗址区结构性线状特征的遥感提取方法。方法采用影像融合和边缘检测的方法提取五陵原墓葬遗址区的线状特征。结果基于Gram-Schmidt方法的DOM航片和ALOS+NDVI多光谱影像的融合影像及Canny边缘检测算子,较好地反映了遗址区的结构性线状特征。结论与单一航片相比,影像融合使遗址区隐含的线状特征明显增强,应根据遗址区结构性线状特征选择影像融合方法和信息源。

Aim To find a remote sensing approach to extract structural line features in tomb sites.Methods Line features in Wuling Hills are extracted by adopting the methodological approaches of image fusion and edge detection.Results The combination of fusion of DOM,ALOS＋NDVI images and Canny algorithm can be a valuable approach for extracting structural line features of the site.Conclusion Compared to single data source,hidden line features can be enhanced by image fusion obviously;the selection of methods in terms of image fusion and the source of data should depend on the structural line features of the archaeological sites.