Sim, S.H. and Song, D.S., 2018. Evaluation of Cadastral Discrepancy and Continuous Cadastral Mapping in Coastal Zone using Unmanned Aerial Vehicle. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp.1386–1390. Coconut Creek (Florida), ISSN 0749-0208.

The coastal area is a national important interest in terms of conservation of the natural environment and the spatial utilization of the coast, such as the expansion of the national territory and the creation of the industrial complex in Korea. However, due to the detailed land registration in the coastal area is insufficient, when the land ownership dispute occurs in coastal areas, the solution such as the boundary determination is not properly suggested. Also, the coastal space has been recognized as a common space not owned by anyone, so that the registration of coastal land in the land registration ledger has been made passively. Recently, UAV surveying system and data modelling methods are now extensively available and suitable for cadastral mapping as they provide an economical benefit and scientific accuracy, which are related to time, low-cost and high-resolution data including ortho-images, point clouds, and digital surface models. In this study, we produced an ortho-image of the test study area, where is located in the Samcheok Beach, with the octocopter-typed UAV and compared with the existing serial cadastral map to evaluate the present status of cadastral boundaries in the coastal area. The overlay analysis results between the cadastral map and the UAV ortho-image showed that the enormous boundary inconsistence in the coastal area is revealed. Also, we carried out new cadastral mapping based on the UAV imagery, and evaluated the suitability of UAV ortho-image for updating cadastral maps in the waterfront zone and the residential zone at the Samcheok Beach area. As a result, it is possible to investigate the cadastral discrepancy of the existing serial cadastral map in a coastal area with the UAV ortho-image and it could be utilized in the cadastral resurveying project (CRP) for a coastal zone management.