3D city models are of growing interest in various application areas. For instance, they are the basis for city planning, virtual sightseeing tours or simulations. Meanwhile, due to internet services such as Google Earth or Microsoft Bing Maps, 3D representations of buildings are becoming ubiquitous and find their way to the general public. The increasing demand for 3D building models requires e...

The focus of this study is on the impact of solar radiation reflected from the building façade to a pedestrian. The possibility of using high-reflectance technology on building façades was evaluated by using a two-dimensional simple building façade model. The effectiveness of applying retroreflective materials to building façades was also evaluated in regards to avoiding adverse effects on pede...

The building façade model is the most prominent streetscape feature for rendering virtual street models. This paper aims to develop a method to identify street obstacles which hinder photo-realistic texturing of building façade. In order to achieve this, the presented method focuses on two research components. Firstly, we develop an effective grid-based line analysis method to differentiate ima...

Working on building façade is dangerous. Many accidents have occurred, and many workers have lost their lives. We have researched to apply robot systems to prevent these accidents. In this paper, we purposed an algorithm for sensor system of a gondola-typed building façade maintenance robot. The robot system moves on the building façade autonomously, or by remote control. Therefore, window area...

This paper describes a new semi-automatic approach developed for modelling historic building façades with Building Information Modelling (BIM) software. Two new developments for BIM software are presented in this paper. The first is a new library of parametric objects which are designed for modelling classical architectural elements from survey data. These library objects are dynamic and have p...

Interest points on the building façade are the basic element for 3-D building modeling and texturing. Grouping these points to the same or separate buildings is a fundamental process for establishing building models and detecting building boundaries. The grouping process is generally achieved by analyzing the geometric relation and the distances between the points in the object space, which req...

In recent years, the demand for highly detailed building models has clearly risen. Most of the details, which characterize a building, come from its façade. It is obvious that such façade detail is ideally acquired from ground-based sensors. For any street-level data acquisition system, a common problem arises: that of occlusions and hence incomplete data. In the past we have shown how multiima...

The paper presents our work on the automatic reconstruction of complete LOD3 building models. Existing LOD2 models are refined by adding 3D façade geometry with explicit semantic information to the planar facades. Aiming at robust and realistic façade structures, independent of the quality and availabilty of sensor data, object knowledge in the form of a grammar is automatically inferred and ap...

The analysis of a glass double skin façade equipped with integrated movable shading devices is presented, employing three different modelling levels: optics of materials, fluid dynamics of the double skin façade and building energy balance; the aim is to optimize both winter and summer energy performance. The model is developed for a façade oriented towards the south and taking into account the...

ABSTRACT: With the development of 3D city model and 3D Geographic Information Systems (GIS), the models of buildings provide many applications like urban planning, disaster assessment, virtual visualization, and others. For city models production, aerial images and photogrammetry are definitely important data source and technology for building reconstruction, since rich geometric and semantic i...