The present work aims to introduce an efficient set of high spatial resolution (HSR) images in order to more fairly evaluate building detection algorithms. The introduced images are chosen from two recent HSR sensors (QuickBird and GeoEye-1) and based on several challenges of urban areas encountered in building detection such as diversity in building density, building dissociation, building sha...

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...

In modern structural codes, the reference value of snow load on roofs is commonly given as product characteristic ground at construction site multiplied by shape coefficient. The coefficient a conversion factor which depends roof geometry, its wind exposure, and thermal properties. Eurocodes, either defined corresponding to an annual probability exceedance 0.02 or nominal value. this paper, imp...

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...

One of the Karo traditional cultures that incorporates elements ethnomathematics in its shape is "Siwaluh Jabu" roof design. In order to apply mathematical ideas discovered as a method for teaching mathematics schools, study's objective was investigate present Through observation, interviews, documentation, and an ethnographic approach, this study also used literature review descriptive qualita...

The need to prepare cities for climate change adaptation requests the urban modeller community to implement sustainable adaptation strategies within their models to be tested against specific city morphologies and scenarios. Greening city roofs is part of these strategies. In this context, the GREENROOF module for TEB (town energy balance) has been developed to model the interactions between bu...

In hot arid regions, cooling buildings by passive techniques is very important regarding energy saving and the need to keep clean the environment. In such areas, domed and vaulted roofs are widely used for centuries, such as in the Middle East region and central part of Iran. In this article analysis is made to explore east–west direction of wind flow around north–south vaulted roofs and flat r...

This paper describes an improved version of our system for robust detection of buildings with a gable roof in varying rural areas from very-high-resolution aerial images. The algorithm follows a custom-made design, extracting key features close to modeling, such as roof ridges and gutters, in order to allow a large freedom in roof appearances. It starts by detecting straight line-segments as ro...