Pembuatan 3D City Model Sebagian Kawasan Kantor Pemerintahan Kabupaten Wonogiri Menggunakan Metode Semi-Automatic dari Foto Udara dengan Level of Detail 2
Arsa Fa'iz Nursyahrial, Erlyna Nour Arrofiqoh, S.T., M.Eng
2023 | Tugas Akhir | D4 TEKNOLOGI SURVEI DAN PEMETAAN DASAR
Every government in Indonesia currently has spatial plans and arrangements in the form of RTRW (Rencana Detil Tata Ruang) / regional spatial plan and RDTR (Rencana Detil Tata Ruang) / detailed spatial plan regulations, but the implementation of spatial division is still in the form of two-dimensional maps (2D). As time goes by, spatial issues become more dynamic and varied, requiring a detailed and dynamic representation of spatial division for analysis of these issues. This can be addressed by visualizing a 3D model of an area, also known as a 3D City Model. Wonogiri Regency is an area that is projected to become a new strategic economic area based on the Central Java Province Regional Spatial Plan 2009-2029. A 3D City Model is needed in this area as representative basic data for urban development engineering, especially in the Wonogiri Regency government office area as its economic center. The 3D City Model of the Government Office Area in Wonogiri Regency was classified as Level of Detail 2 (LoD 2), as it adhered to the standard set by the Open Geospatial Consortium. LoD 2 is suitable for modeling smaller urban/area scales and allowed for faster modeling. The data required for creating the 3D City Model in that activity included aerial photos with geotagging and ICP (Iterative Closest Point) test points. The aerial photos were processed to form a Digital Elevation Model (DEM) and Orthophoto that met the accuracy tests. The Orthophoto data was used to create footprints of buildings, roads, and landscape elements such as vegetation, utilities, and parks. The DEM data was processed to generate nDSM (normalized Digital Surface Model) by subtracting the Digital Terrain Model (DTM) data, and the nDSM results were then used for extracting the height values of the footprint objects. The footprint objects with height values were then used to create the 3D City Model using a semi-automatic method, utilizing the CityEngine software with Computer Generated Architecture (CGA) rules. The resulting 3D City Model was then subjected to geometric accuracy testing according to LoD 2 standards, which required <2m>. The output of the 3D City Model included buildings, roads, and landscape elements such as vegetation, utilities, and parks. Buildings were categorized based on their area types, including educational areas, commercial, residential, public office, places of worship, government office, and public facility areas. The geometric accuracy achieved was 0.1369 m, which met the LoD 2 tolerance of <2m>
Kata Kunci : Foto udara,3D City Model,Computer Generated Architecture