Developing fully automatic systems is still an active research topic in 3D building model reconstruction. While a general solution to the building reconstruction problem relies on collecting and grouping the modeling cues (e.g., lines, corners, planes) from Digital Surface Model (DSM) data, failure in finding the cues due to noise in the DSM and the object complexities is a big challenge. In th...

1 this work has been supported by Airtel company (Spain) Abstract: This work summarizes the results of a measurement campaign undertaken to evaluate the performance of two branch space and polarization diversity schemes at 900 MHz in different environments (urban, suburban, rural flat and rural hilly). A total number of 783 runs were made covering these sites and using different transmitter ant...

Visualizations and simulations in an urban environment need 3D digital maps rather than traditional 2D maps, and constructing 3D maps from multiple data sources has become a promising and challenging research area nowadays. In this paper, we propose a method for modeling roads, buildings, and ground from 2D digital maps and Laser Range Finder(LRF) data. Firstly, road surfaces are created throug...

Sir,?I send you an extract from Herodotus describing how the early Egyptians protected themselves from mosquito bit and at the same time from malaria. The mesh of the hshing e must have been very fine to prevent the ingress of i^n0P'1? or Culex. The custom of sleeping on the flat roofs ot houses is still common in Egypt and the small tower risi ? above the roof is found in the representations o...

recently, with increasing of interest of all people especially young people and teenagers to sports in iran in parallel the tendency of investors both in governmental and private parts is increased ,and in this part the special places and spaces of sport was not departed , and billion rials (iran’s currencies) is paid for making some places for sport or equipped the old building .in this part f...

Nowadays, the power system utility has started to consider the green power technology in order for the world to have a healthier environment. A small-scale hybridized solar PV-AC grid (HSPVACG) power system is proposed to be developed to operate with AC grid. This system consists of a photovoltaic array installed on the rooftop. Moreover the roof is flat, which implies that system can be placed...

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...

3D city modelling is a rapidly growing research area in the field of feature extraction. As the demand for 3D data increases, so does the necessity for higher detail building models. The use of aerial imagery and photogrammetric processing has been dominant in the field of feature extraction for several decades. Recently this dominance has been challenged by laser scanning techniques which offe...

Working paper developed for a NASA-sponsored study of solar cells Significance Part 6: Tutorials, textbooks and reviews Lightning interception by an unprotected building 30 feet high x 45 feet long on flat land, in the Cleveland area, can be estimated at one strike per 200 years on the average. However, peculiar configuration can easily affect this estimate upward or downward. Means are availab...