For interactive 3D visualization of a cyber city, the efficiency of browsing is highly depended on the number of triangles and textures to be rendered. Many algorithms regarding to terrain simplification has been discussed in the field of computer vision. In this study, we will focus on the generalization of 3D building models. In the paper, an automatic approach to generate three levels-of-det...

Dengue disease incidence is related with the construction of a house roof, which is an Aedes mosquito habitat. This study was conducted to classify pitch roof (PR) and flat roof (FR) surfaces using pan-sharpened Worldview 2 to identify dengue disease patterns (DDPs) and their association with DDP. A Supervised Minimum Distance classifier was applied to 653 training data from image object segmen...

Three-dimensional stability of roofs in deep flat-ceiling cavities is analyzed. The number, factor safety, and required supporting stress are used as measures roof stability. Despite the simplicity flat geometry, three-dimensional analysis presents some complexities owed to shape failure surface geometry collapse mechanism. mode assumes a rock block moving downward into cavity, study aims recog...

Microburst can produce downdraft and strong divergent outflow wind, whose characteristics are distinct from the atmospheric boundary layer (ABL) wind. In the present study, microburst-wind loading effects on low-rise structures a cubic-shaped building, a grain bin and two gable-roofed buildings – are evaluated and compared by performing laboratory tests on scaled models using a microburst simul...

In this study, optimum insulation thicknesses are calculated for three different flat-surfaces which navigable terrace roof; stone-covered and soil-covered un-navigable flat roof types. The outdoor temperature, the value of January, is coldest month in winter, July, hottest summer, solar radiation, considered together. Flat surfaces to be black painted marble. Firstly, solar-air temperatures we...

In many buildings, the roof is a major element that gives building its distinctive profile .The main purpose of to protect or house in all types weather with minimum maintenance .a must be strong stand snow and wind loads. Another consideration appearance should add attractiveness styles are used create different architectural effects. This paper reports study on flat systems include layers str...

A three-dimensional numerical time-domain model based on the linearised Euler equation is applied to idealised urban situations with elongated, isolated buildings beside a straight street with sound emissions. The paper aims at the investigation of principle relationships between the source– receiver geometry (street and building facades) and sound propagation under the consideration of ground ...

In this paper, we will present a highly automated method of extracting 3D building information. Our approach set out to locate the vertices of building roof. For a start, we will limit our development to high rise buildings with approximately flat rooftop. If the main corners and intermediate vertices can be found, the 3D building model can be constructed. Our study is applying stereo pair sate...