Natural hazards risk assessment requires data on the built environment. This paper reports an image analysis method that can extract building features, mainly roof plan areas, for potential vulnerability analysis. Both pixeland object-based image processing methods are adopted. First, red/green/blue colour bands and image textures are incorporated in a supervised artificial neural network class...

This paper presents a new approach to automatic 3D building reconstruction from LiDAR data. While traditional approaches use random sampling or Hugh transform for extracting subsets of coplanar points from noisy point clouds, our method is based on locally fitted surfaces (LoFS). These are planes, best-fitted to the Kneighbourhood of each LiDAR point. In this way, a set of candidate patches for...

Architectural settings occur in many virtual environments. Modeling such highly detailed structures manually is a time-consuming and tedious task. Therefore we propose a system for the rapid modeling of building façades. The designer just has to provide some coarse information, the building outline, its type and style and the computer takes care of creating the exact geometry. Adjacent architec...

The problem of removing blemishes in mosaics of building facades caused by foreground objects such as trees may be framed in terms of inpainting. Affected regions are first automatically segmented and then inpainted away using a combination of cues from unoccluded, temporally adjacent views of the same building patch, as well as surrounding unoccluded patches in the same frame. Discriminating t...

Secondhand exposure to environmental tobacco smoke (ETS) in multifamily housing remains a health concern despite strong recommendations to implement non-smoking policies. Multiple studies have documented exposure to ETS in non-smoking units located in buildings with smoking units. However, characterizing the magnitude of ETS infiltration or measuring the impact of building interventions or resi...

conclusions based on the clinical and radiographic examinations, implant-tooth approximation (less than 1 mm or direct contact) is not related to pulp vitality of the tooth. further studies with larger sample sizes are necessary to confirm the results of the study. results among the 31 assessed implants and the adjacent intact teeth, 13 implants had direct contact and 18 implants had proximity ...