Building Footprint Extraction for 3D City Modelling using Point Cloud and Orthophoto: Case Study of Karaman/Turkiye

As a result of urban population growth and the construction of different complex structures, 3D visualization has become indispensable for spatial planning and urban management. 3D city models, also referred to as “digital twins”, are used in areas such as disaster management, telecommunications, tourism and navigation, in addition to city planning. Point cloud data obtained by photogrammetry and Lidar methods are commonly used for the preparation of the 3D city model. By using photogrammetry, the position and shape of the object can be determined precisely by using photographs taken from different angles. It is often preferred in 3D visualization studies because it is less costly than the Lidar method. In this study, we will obtain a 3D building model by using the orthophoto and point cloud data obtained by the photogrammetric method. <a href="https://medium.com/@taremyor/building-footprint-extraction-for-3d-city-modelling-using-point-cloud-and-orthophoto-case-study-of-4871bff73601">Read More</a>