This study utilized UAV orthophotos and overlay analysis of cadastral maps to analyze the class of cadastral non-coincidence, and tries to suggest arrangement methods based on the present conditions. For this, UAV orthophotos were produced and ground ...
This study utilized UAV orthophotos and overlay analysis of cadastral maps to analyze the class of cadastral non-coincidence, and tries to suggest arrangement methods based on the present conditions. For this, UAV orthophotos were produced and ground control points(GCP) and test points were used to verify its accuracy. Results of RMSE showed X=0.032m, Y=0.024m and connection error=0.039m, verifying its applicability. Overlay analysis of the orthophotos and the cadastral maps showed that 64 parcels out of a total of 123 were cadastral non-coincidences, showing biased non-coincidences, position error non-coincidences and irregular non-coincidences. The reduction rate of cadastral non-coincidences were analyzed by dividing the cadastral maps into blocks and methodically moving them while referring to the current present condition layout and the UAV photos. The results showed that 52 non-coincidences that were moved were reduced down to 29 parcels, while biased non-coincidences showed an especially high effective result from maintenance. Thus, an increase in business efficiency may be anticipated by connecting methods of this study with cadastral resurvey projects.