An urban heat island (UHI) is a climate phenomenon that results in an increased air temperature in cities when compared to their rural surroundings. In this Letter, the dependence of an UHI on urban geometry is studied. Multiyear urban-rural temperature differences and building footprints data combined with a heat radiation scaling model are used to demonstrate for more than 50 cities worldwide...

The built environment surrounding arterials affects the dispersion of vehicular emissions in urban areas, modifying the potential risks to public health. In order to study the influence of urban morphometry on flow and dispersion of vehicular fine particulate matter emissions, in the summer of 2008 field measurements were performed in major arterials located in five Southern Californian cities ...

In this paper we presented a novel approach for building detection from multiple aerial images in dense urban areas. The approach is based on accurate surface reconstruction, followed by extraction of visible building facades, then used as a main cue for building detection. For the facade detection a simple but nevertheless flexible and robust algorithm is proposed. It is based on observation t...

Conventional two dimensional(2D) maps and DTMs are insufficient to represent geographic information in urban space comprising high-rise buildings and underground structures. There is a pressing need for a model of three dimensional(3D) representation of urban space, that is, a Digital Urban Space Model(DUSM). However, existing solid modelling techniques cannot be directly applied to the 3D repr...

New developments in urban planning, urban landscape, real estate management and so on, call for new demands for 3D Object Model. The building models are the most important in 3D object model. With the development of 3D data acquisition, the visualization aspect often is detail considered, however, only a few investigation about the creating and storing of 3D object model is discussed. In this p...

â  regional and urban planning instruments contain an extensive range of concepts and methods. these methods are important for understanding the complex identity of cities and the prediction of their future. today majority of planners and urban planning authorities believe that the use of these methods can help us to better understand urban systems and predict their behavior. in this regard the...

We develop a new dartboard methodology to delineate urban areas using detailed information about building location, which we implement map of all buildings in France. For each pixel, our approach compares actual density after smoothing counterfactual smoothed computed randomly redistributing buildings. define as any area with statistically significant excess density. Within areas, extensions al...

Urban morphology is important in a broad range of investigations across the fields city planning, transportation, climate, energy, and urban data science. Characterising buildings with set numerical metrics fundamental to studying form. Despite rapid developments 3D geoinformation science, growing availability, most studies simplify their 2D footprint, when taking height into account, they at a...