scholarly journals 3D Design and Modeling of Smart Cities from a Computer Graphics Perspective

2012 ◽  
Vol 2012 ◽  
pp. 1-19 ◽  
Author(s):  
Daniel G. Aliaga

Modeling cities, and urban spaces in general, is a daring task for computer graphics, computer vision, and visualization. Understanding, describing, and modeling the geometry and behavior of cities are significant challenges that ultimately benefit urban planning and simulation, mapping and visualization, emergency response, and entertainment. In this paper, we have collected and organized research which addresses this multidisciplinary challenge. In particular, we divide research in modeling cities and urban spaces into the areas of geometrical modeling and of behavioral modeling. The first area overlaps significantly with computer graphics and computer vision—our focus is on algorithms that produce intricate geometry quickly from a compact set of specifications (i.e., procedural modeling). The second area of behavioral modeling centers on understanding the underlying socioeconomic, meteorological, and resource consumption/waste production processes occurring within an urban space. Research in urban modeling, even from a computer graphics perspective, must tie the two areas of geometric and behavioral modeling together in order to ensure that useful 3D modeling techniques are developed and are placed within their needed context. In addition, we discuss the growing trend of inverse procedural modeling and some sample urban applications.

Author(s):  
Y. Ma ◽  
G. Li ◽  
H. Xie ◽  
H. Zhang

<p><strong>Abstract.</strong> In the process of modern urban development, cities face various challenges such as climate change, air pollution and poverty, which have negative effects on urban sustainable development and self-regulation. The construction of smart cities can effectively improve the capability of urban management and operation. In this paper, we aim to explore how to use the big data in urban physical, social and cyber spaces to construct smart cities. The concept of digital urban space is proposed to help achieve the construction of smart cities, and city profiling is accordingly presented as a construction method of digital urban spaces and city profile as a product. According to the goals of constructing digital urban spaces, we illustrate the conception and core implementation steps of city profiling, including urban facets modelling and urban facets profiling with smart data. With three application scenarios, we discuss how city profile can be used to meet the factual needs of management, operation and decision-making. City profile can model the cities with urban data and make them become organisms managed and operated by data, so that various information services related to the city can be provided to different users.</p>


Author(s):  
Alessia Grigoletto ◽  
Mario Mauro ◽  
Pasqualino Maietta Latessa ◽  
Vincenzo Iannuzzi ◽  
Davide Gori ◽  
...  

This systematic review aimed to investigate the type of physical activity carried out in green urban spaces by the adult population and to value its impact on the population’s health. Additionally, another purpose was to examine if the presence of outdoor gyms in green urban spaces can promote participation in physical activity among adults. Searches of electronic databases, with no time restrictions and up to June 2020, resulted in 10 studies meeting the inclusion criteria. A quantitative assessment is reported as effect size. Many people practiced walking activity as a workout, which showed improvements in health. Walking is the most popular type of training due to its easy accessibility and it not requiring equipment or special skills. Outdoor fitness equipment has been installed in an increasing number of parks and has become very popular worldwide. Further, outdoor fitness equipment provides free access to fitness training and seems to promote physical activity in healthy adults. However, other studies about outdoor fitness equipment efficiency are needed. People living near to equipped areas are more likely to perform outdoor fitness than those who live further away. The most common training programs performed in green urban spaces included exercises with free and easy access, able to promote physical health and perception.


2018 ◽  
Vol 47 ◽  
pp. 275-305
Author(s):  
Helen Appleton

AbstractThe Anglo-Saxon mappa mundi, sometimes known as the Cotton map or Cottoniana, is found on folio 56v of London, British Library, Cotton Tiberius B. v, which dates from the first half of the eleventh century. This unique survivor from the period presents a detailed image of the inhabited world, centred on the Mediterranean. The map’s distinctive cartography, with its emphasis on islands, seas and urban spaces, reflects an Insular, West Saxon geographic imagination. As Evelyn Edson has observed, the mappa mundi appears to be copy of an earlier, larger map. This article argues that the mappa mundi’s focus on urban space, translatio imperii and Scandinavia is reminiscent of the Old English Orosius, and that it originates from a similar milieu. The mappa mundi’s northern perspective, together with its obvious dependence on and emulation of Carolingian cartography, suggest that its lost exemplar originated in the assertive England of the earlier tenth century.


2021 ◽  
Vol 13 (10) ◽  
pp. 1889
Author(s):  
Junxiang Zhu ◽  
Peng Wu

The development of a smart city and digital twin requires the integration of Building Information Modeling (BIM) and Geographic Information Systems (GIS), where BIM models are to be integrated into GIS for visualization and/or analysis. However, the intrinsic differences between BIM and GIS have led to enormous problems in BIM-to-GIS data conversion, and the use of City Geography Markup Language (CityGML) has further escalated this issue. This study aims to facilitate the use of BIM models in GIS by proposing using the shapefile format, and a creative approach for converting Industry Foundation Classes (IFC) to shapefile was developed by integrating a computer graphics technique. Thirteen building models were used to validate the proposed method. The result shows that: (1) the IFC-to-shapefile conversion is easier and more flexible to realize than the IFC-to-CityGML conversion, and (2) the computer graphics technique can improve the efficiency and reliability of BIM-to-GIS data conversion. This study can facilitate the use of BIM information in GIS and benefit studies working on digital twins and smart cities where building models are to be processed and integrated in GIS, or any other studies that need to manipulate IFC geometry in depth.


Author(s):  
Anette Stenslund

In recent decades, research has paid attention to the atmospheric ways computer-generated imagery (CGI) marks the experience of future urban design. What has been addressed in the generic abbreviation CGI has, however, exclusively concerned visualisations that communicate with stakeholders beyond designers and architects. Based on fieldwork within an urban design lab, the paper differentiates among the range of CGI used by urban designers. Focusing on collage, which forms one kind of CGI that has received scant attention in scholarly literature, I demonstrate its key function as an epistemological in-house work-in-progress tool that helps designers to refine their vision and to identify the atmosphere of future urban spaces. Based on New Aesthetics, collaging atmosphere is characterised by a physiognomic approach to urban space that selectively addresses aesthetic characteristics. Hence, the paper tackles a discussion that points towards cautious handling of the communicative scope of collages that can be well complemented by other types of CGI before entering a constructive dialogue with clients.


2007 ◽  
Vol 21 (1) ◽  
pp. 87-99
Author(s):  
Caragh Wells

This article suggests that over recent decades Catalan literary criticism has paid too little attention to the aesthetic attributes of Catalan literature and emphasised the social, political and cultural at the expense of discussions of narrative poetics. Through an analysis of Montserrat Roig’s metaphorical use of the city in her first novel Ramona, adéu, I put forward the view that the aesthetic features of Catalan literature need to be re-claimed. This article provides a critical analysis of the aesthetic importance of Roig’s representation of the city in her first novel and argues that she uses Barcelona as a critical tool through which to explore questions of both female emancipation and aesthetic freedom. Following a detailed discussion of Roig’s descriptions of how her female characters interact with particular urban spaces, I examine how Roig makes subtle shifts in her semantic register during these narrative accounts when her prose moves into the realm of the poetic. I conclude that this technique enables us to read her accounts of urban space as metaphors for aesthetic freedom and are inextricably linked to her wider concerns on the importance of liberating Catalan literature from the discourse of political nationalism.


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