Abstract
The cadastral detail data is used for overlap analysis with digitized graphic cadastral maps to solve the problem of inconsistencies between cadastral maps and the current land situation. This study investigated the feasibility of a handheld LiDAR scanner to collect 3D point clouds in an efficient way for a detail survey in urban environments with narrow and winding streets. Then, urban detail point clouds were collected by the handheld LiDAR scanner. After point cloud filtering and the ranging systematic error correction that was determined by a plane-based calibration method, the collected point clouds were transformed to the TWD97 cadastral coordinate system using control points. The land detail line data were artificially digitized and the results showed that about 97% error of the digitized detail positions was less than 15 cm compared to the check points surveyed by a total station. The results demonstrated the feasibility of using a handheld LiDAR scanner to perform an urban cadastral detail survey in digitized graphic areas. Therefore, the handheld LiDAR scanner could be used for the production of the detail lines for urban cadastral detail surveying for digitized cadastral areas in Taiwan.
Highlights
IntroductionThe possible parcel points along the parcel boundaries must be surveyed for overlap analysis and map registration between the digitized cadastral maps and land detail data (possible parcel points) to eliminate inconsistencies between cadastral maps and the actual land details
This study investigated the feasibility of GeoSLAM Zeb-Horizon LiDAR scanner for a detail survey in urban environments with narrow and winding streets
Based on the accuracy demand, this study investigated the feasibility of a handheld LiDAR scanner, GeoSLAM
Summary
The possible parcel points along the parcel boundaries must be surveyed for overlap analysis and map registration between the digitized cadastral maps and land detail data (possible parcel points) to eliminate inconsistencies between cadastral maps and the actual land details. An urban cadastral detail survey in the digitized cadastral area of Taiwan’s urban city is to eliminate inconsistencies between cadastral maps and the actual land details in urban areas. For an urban cadastral detail survey by GNSS, it is still necessary to consider the environmental sky view, multipath effects, and other errors, which are restricted by the urban construction environment.
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