Three-dimensional city models are an increasingly common data set maintained by many cities globa... more Three-dimensional city models are an increasingly common data set maintained by many cities globally. At the same time, the focus of research has shifted from their production to their utilization in application development. We present the implementation of a demonstrator application combining the online visualization of a 3D city information model with the data from an application programming interface. By this, we aim to demonstrate the combined use of city APIs and 3D geospatial assets, promote their use for application development and show the performance of existing, openly available tools for 3D city model application development
Photorealistic and classified urban point cloud dataset (Helsinki)
The dataset contains a photorealistic and classified urban point cloud from Kalasatama region in ... more The dataset contains a photorealistic and classified urban point cloud from Kalasatama region in Helsinki, Finland. Data was created using both terrestrial laser scanning (Leica RTC360) and UAV-based (DJI P4 Pro+) photogrammetry. 3D reconstruction was completed with RealityCapture and point cloud classification with TerraScan. The dataset is georeferenced in ETRS-TM35FIN (EPSG 3067) coordinate system. Work was done in Aalto University (The Research Institute of Measuring and Modeling for the Built Environment) with support from the City of Helsinki.
The data set contains 3D luminance point clouds for lighting analysis. Colums: X Y Z (L) Study Ar... more The data set contains 3D luminance point clouds for lighting analysis. Colums: X Y Z (L) Study Area: B-Hall, a lecture hall at Aalto University, Espoo, Finland.
Applying photogrammetry to reconstruct 3D luminance point clouds of indoor environments
Architectural Engineering and Design Management, 2020
ABSTRACT Computer-aided 3D modelling is the standard design method in the architecture, engineeri... more ABSTRACT Computer-aided 3D modelling is the standard design method in the architecture, engineering, construction, owner, operator (AECOO) industry and in lighting design. Applying a photogrammetric process, a sequence of images is used to reconstruct the geometry of a space or an object in a 3D model. Likewise, a calibrated digital camera is utilized to measure the surface luminance values of an environment or an object. We propose a workflow in which the geometry and the luminance values are measured simultaneously by combining these two measurement methods. The pipeline has been assessed and validated through the application to a case study, the Aalto Hall (Aalto University, Espoo, Finland), in order to understand its potential.
Uploads
Papers by Arttu Julin