Application of augmented reality and close range photogrammetry technology for mapping of cultural heritage areas (case study: Ai Renung Site, Sumbawa Regency)

The Ai Renung site is the first megalithic complex site on Sumbawa that has 8 sarcophagus objects and has been used as an ancient park by the NTB Provincial Cultural Heritage Preservation Hall. Unfortunately, until now it does not have a cultural heritage map that describes the location and condition of the site, so the presentation of spatial information that describes the location is not conveyed to tourists. In this study, an augmented reality application was made from a combination of 3D model visualization and orthophoto maps. Augmented reality application is implemented on an Android device. Application users can see the visualization of the 3D sarcophagus model virtually using an Android device when scanning one of the markers found on the Ai Renung Site Cultural Heritage Map. This study also analyzes 3D models and orthophoto. The results of the control point analysis on orthophoto, the RMSE value of 0.293 m was produced. Based on the CE90 test of the RMSE value, orthophoto can be used as a base map in making Cultural Heritage Zone Maps with a scale of 1: 1000 and entering into order class 3. As for forming a 3-dimensional model, most 3D model objects have RMSE values that are less than 0.5 m. So that it meets the Level of Detail 3 order criteria.