In this research, untreated and surface-treated wooden facades of buildings are investigated compared with regard to durability, environmental impact, cost using the document literature studies supplemented quantitative data. The investigation is based on influence wood by external factors, either in its natural form or a protective layer surface treatment. It resulted from study that durabilit...

Accurate information on urban building types plays a crucial role for urban development, planning, and management. In this paper, we apply Object-Based Image Analysis (OBIA) methods to extract buildings from Airborne Laser Scanner (ALS) data and investigate the possibility of classifying detected buildings into ―Residential/Small Buildings‖, ―Apartment Buildings‖, and ―Industrial and Factory Bu...

A widely used morphometric method (Macdonald et al. 1998) to calculate the zero-plane displacement (zd) and aerodynamic roughness length (z0) for momentum is further developed to include vegetation. The adaptation also applies to the Kanda et al. (2013) morphometric method which considers roughness-element height variability. Roughness-element heights (mean, maximum and standard deviation) of b...

to enhance the understanding of the impact of obstacle buildings on pollution transportationand dispersion in the atmospheric boundary layer, it is necessary to know the atmospheric flow characteristics over terrains. wind flow characteristics in a boundary layer over a step-shaped cliff topography model with rough and smooth surfaces were studied numerically using computational fluid dynamics ...

Tall buildings are a significant feature of many urban skylines. The visual complexity of the tall buildings that make up the urban skyline can vary according to the degree of silhouette complexity and the extent to which the façade is articulated. This article reports a study in which 60 undergraduate psychology students ranked a set of 9 synthetic skylines according to either the perceived co...

This paper describes a 3D scene analysis system that is capable of modelling real-world scenes, based on data acquired by a Laser Range Finder on board of a mobile robot. Laser range images directly provide access to three dimensional information, as opposed to intensity images. This characteristic makes range data suited to build 3D models of objects, and in general real world scenes. Results ...

This paper studies the effect of airborne elevation information on the classification of an aerial image in an urban area. In an urban area, it is difficult to classify buildings relying solely on the spectral information obtained from aerial images because urban buildings possess a variety of roof colors. Therefore, combining Lidar data with aerial images overcomes the difficulties encountered...

Building change detection is useful for land management, disaster assessment, illegal building identification, urban growth monitoring, and geographic information database updating. This study proposes an automatic method that applies object-based analysis to multi-temporal point cloud data to detect building changes. The aim of this building change detection method is to identify areas that ha...

With the classical deformation measurement the objects are modeled by a number of measurement points which are distributed according to the deformation symmetrically as a grid or attached at selected principal points of movement. The measurement points can be determined with a total station (angle and distance measurements) to a high precision with a standard deviation of the 3D position of ±1....

Building detection in very high resolution (VHR) remote sensing images is crucial for many urban planning and management applications. Since buildings are elevated objects, the incorporation of elevation data provides a mean to reliable detection. However, almost all existing methods of elevation-based building detection must first generate a normalized Digital Surface Model (nDSM). This model ...