The heritage building information model (H-BIM) is a digital representation of a historic building, which combines real-world representations with spatial data in the field of preservation of historic buildings and sites. In Indonesia, especially on the island of Java, many temple buildings are historical sites. To build the H-BIM, appropriate 3D modeling technology is required. In this study, videogrammetry techniques are used for temple data acquisition and 3D modeling using the Structure from Motion/Multi-View Stereo (SfM-MVS) and neural radiance field (NeRF) algorithms. To support interoperability, the resulting 3D model is stored in a boundary representation (B-Rep) data structure. As Hindu heritage temples in Indonesia have complex surface textures, the video-recorded data used in 3D modeling are processed with two scenarios of 70% and 95% overlap. The results of 3D modeling with 70% overlap exhibit superiority in terms of the detail of the temple surface objects and their completeness. The 3D model processed with the SfM-MVS algorithm shows advantages in terms of geometric accuracy and is suitable for large temple buildings. By contrast, the 3D model processed with the NeRF algorithm shows advantages in terms of the density of point clouds and better visualization and is suitable for small temple buildings. The use of the B-Rep data structure can describe object boundaries well and can be stored in multiple formats. In this study, the OBJ, KMZ, FBX, and CityGML formats were used, thus having the potential to support interoperability.
Arif et al. (Sun,) studied this question.