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http://dx.doi.org/10.22640/lxsiri.2018.48.1.153

Accuracy Analysis of Topographic Survey Data for the Official Land Price Appraising  

Lee, Chang-Han (Namseoul University, Master of Geographic Information Engineering)
Sung, Chun-Ja (Department of Spatial Information Engineering, Namseoul University)
Publication Information
Journal of Cadastre & Land InformatiX / v.48, no.1, 2018 , pp. 153-167 More about this Journal
Abstract
Despite many criticisms that topographic survey data for the official land price appraising collected annually using field survey method might be inaccurate, there is only few concrete research on it. This paper investigated whether the topographic survey data collected by a local government using field survey method is consistent with the data analyzed using the digital elevation model to examine its accuracy. The accuracy analysis indicated that 324 out of 1537 lots of land have inconsistent results which means the ratio of inconsistency is 17.36%. Among 11 areas studied, five had the inconsistency ratio above 20% while the worst one had 38.71%. The inconsistency ratio is generally higher for the rough terrain with irregular slope and high altitude while it is relatively lower for the terrain with smooth landform. The analysis results imply that there are limitations in investigating the topology by field survey method. Therefore, the official land price appraising policy should set precise criterion and change over to highly accurate geographic information analysis method to effectively and accurately examine topology, given the fact that the topology of the Republic of Korea has complicated features with irregular slope and altitude.
Keywords
Official land price; Field survey method; Topographic survey data; Accuracy analysis; Digital Elevation Model;
Citations & Related Records
Times Cited By KSCI : 4  (Citation Analysis)
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