An Analysis of the Three-Dimensional Modelling Using LiDAR Data and Unmanned Aerial Vehicle (UAV) (Case Study: Institut Teknologi Sepuluh Nopember, Sukolilo Campus)

Abstract

Abstract The process of modelling a three-dimensional city in the Institut Teknologi Sepuluh Nopember, Sukolilo Campus, can be carried out using a semi-automatic method with a model-driven approach to update the three-dimensional model using LiDAR and orthophoto data in 2016 into a three-dimensional model of several new objects using UAV data acquired in 2021. The application of building footprint segmentation, roof modification, combination of CGA rules, and facade texture can represent a three-dimensional city model according to a certain level of detail or LOD so that 1236 building models are obtained from the 2016 LiDAR data and 104 new building models are added from the UAVs in 2021. The results of the accuracy test analysis of the 3D modelling with LiDAR data sources and UAV data showed that all model accuracy values have met the LOD 2.1 standard according to the refined level of details standard. Based on the level of detail analysis assessment, the average completeness of the model achieved is 87.49%. Meanwhile, the correctness value that was successfully formed by the model was 94.08%, and finally the quality value of the resulting model was 82.79%. Based on SNI 03-1733-2004, the calculation of the completeness and correctness of the model has met the standard, which is more than 85% of the model approach with the original object in the field. Meanwhile, for the quality value of the resulting model, it is still 2.21% of the allowed tolerance value.