What is believed to be the first fluorescence imaging of the facades of a historical building, which was accomplished with a scanning fluorescence lidar system, is reported. The mobile system was placed at a distance of ~60 m from the medieval Lund Cathedral (Sweden), and a 355-nm pulsed laser beam was swept over the stone facades row by row while spectrally resolved fluorescence signals of eac...

Matching street-level images to a database of airborne images is hard because of extreme viewpoint and illumination differences. Color/gradient distributions or local descriptors fail to match forcing us to rely on the structure of self-similarity of patterns on facades. We propose to capture this structure with a novel “scale-selective self-similarity” (S) descriptor which is computed at each ...

A virtual 3-dimension city model is a sophisticated application of geoinformatic systems as it represents layouts, activities and functionalities of a real-world community. To enable human users to better visualize their living spaces, a virtual reality city model must be both immersive and accurately re-created. Visualization of city models in such environments is a combination of many challen...

Reducing energy consumption of residential and commercial buildings is a major challenge nowadays. One of the strategies to achieve a significant reduction lies on building renovation. On this regard, a project targeting the industrialization of high performance thermal renovation for apartment buildings is been executed. The renovation is based on an external envelop composed by rectangular wo...

CSG model manipulation also allows us to lower back-facing walls to improve visibility from a specific viewing angle (See Fig. 1). Let v be the viewing direction, for which the model is to be optimized, and denote hf and hb as the maximum height of the structure to be reconstructed for the front-facing and back-facing walls, respectively. For each primitive, we translate the primitive along eac...

In this paper we present a practical approach for generating an occlusion-free textured 3D map of urban facades by the synergistic use of terrestrial images, 3D point clouds and area-based information. Particularly in dense urban environments, the high presence of urban objects in front of the facades causes significant difficulties for several stages in computational building modeling. Major c...