Constructing the 3D virtual scene of a coal mine is the objective requirement for modernizing and processing information on coal mining production. It is also the key technology to establish a ＂digital mine＂. By exp...Constructing the 3D virtual scene of a coal mine is the objective requirement for modernizing and processing information on coal mining production. It is also the key technology to establish a ＂digital mine＂. By exploring current worldwide research, software and hardware tools and application demands, combined with the case study site （the Dazhuang mine of Pingdingshan coal group）, an approach for 3D geo-visualization of a mine surface plant and mine roadway is deeply discussed. In this study, the rapid modeling method for a large range virtual scene based on Arc/Info and SiteBuilder3D is studied, and automatic generation of a 3D scene from a 2D scene is realized. Such an automatic method which can convert mine roadway systems from 2D to 3D is realized for the Dazhuang mine. Some relevant application questions are studied, including attribute query, coordinate query, distance measure, collision detection and the dynamic interaction between 2D and 3D virtual scenes in the virtual scene of a mine surface plant and mine roadway. A prototype system is designed and developed.展开更多
Urban flooding poses serious threats to human life. In China, many cities have recently experienced flooding during every rainy season. Several years ago, policies, scientific methods, and engineering measures were ap...Urban flooding poses serious threats to human life. In China, many cities have recently experienced flooding during every rainy season. Several years ago, policies, scientific methods, and engineering measures were applied to address this systematic problem. However, flooding disasters remain frequent in urban areas in China. Therefore, this article discusses the human-earth relationship from a philosophical perspective to analyse the causes of urban water problems. This article mainly illustrates the value of the what-if analysis concept and how to use this concept to address urban flooding issues and improve the management of urban overland flow. However, the existing simulation models and software do not effectively support what-if analyses. In particular, most existing urban hydrological simulation models and software do not sufficiently consider the heterogeneity of geographical objects on urban surfaces and lack interactions to support what-if analyses. These limitations hinder effective implementation of what-if analysis. This article introduces three key technologies that allow an urban overland flow simulation system to effectively support what-if analyses: 1) urban spatial automatic discretization and topo-adjacency, which reflect the heterogeneity of an urban area;2) hydrological models for the simulation of the hydrologicalprocesses of the main geographical objects in the urban area;and 3) key strategies for a visual analytic platform to support what-if analyses in well-perceived way. The experiment was conducted using a community in Chongqing as a case study. The results demonstrate that the designed key technologies and functions of the proposed system can support what-if analysis and that what-if analysis is an important and useful concept for urban water management.展开更多
Augmented reality is gaining traction across many domains.One of these is participation within geo-spatial planning projects.The interactive and three-dimensional nature of augmented reality is suitably placed to cate...Augmented reality is gaining traction across many domains.One of these is participation within geo-spatial planning projects.The interactive and three-dimensional nature of augmented reality is suitably placed to cater for a higher quality of communication and information exchange in planning processes.Thus,this research provides an overview of the use of AR in planning processes,specifically regarding the participation aspect,through an open-access systematic literature review,for which the investigation identifies 35 articles concerning the current state-of-the-art of augmented reality in planning.Findings indicate the rather limited use of augmented reality in the overall planning process due to technical limitations.Nonetheless,it shows to be a useful technology where it allows for higher user engagement and a clearer understanding among users in planning projects.Additionally,in participation,the technology offers a motivational solution and creates an overall higher acceptance and awareness of the plan,making the participants more engaged and represented in the planning process.展开更多
文摘Constructing the 3D virtual scene of a coal mine is the objective requirement for modernizing and processing information on coal mining production. It is also the key technology to establish a ＂digital mine＂. By exploring current worldwide research, software and hardware tools and application demands, combined with the case study site （the Dazhuang mine of Pingdingshan coal group）, an approach for 3D geo-visualization of a mine surface plant and mine roadway is deeply discussed. In this study, the rapid modeling method for a large range virtual scene based on Arc/Info and SiteBuilder3D is studied, and automatic generation of a 3D scene from a 2D scene is realized. Such an automatic method which can convert mine roadway systems from 2D to 3D is realized for the Dazhuang mine. Some relevant application questions are studied, including attribute query, coordinate query, distance measure, collision detection and the dynamic interaction between 2D and 3D virtual scenes in the virtual scene of a mine surface plant and mine roadway. A prototype system is designed and developed.
文摘Urban flooding poses serious threats to human life. In China, many cities have recently experienced flooding during every rainy season. Several years ago, policies, scientific methods, and engineering measures were applied to address this systematic problem. However, flooding disasters remain frequent in urban areas in China. Therefore, this article discusses the human-earth relationship from a philosophical perspective to analyse the causes of urban water problems. This article mainly illustrates the value of the what-if analysis concept and how to use this concept to address urban flooding issues and improve the management of urban overland flow. However, the existing simulation models and software do not effectively support what-if analyses. In particular, most existing urban hydrological simulation models and software do not sufficiently consider the heterogeneity of geographical objects on urban surfaces and lack interactions to support what-if analyses. These limitations hinder effective implementation of what-if analysis. This article introduces three key technologies that allow an urban overland flow simulation system to effectively support what-if analyses: 1) urban spatial automatic discretization and topo-adjacency, which reflect the heterogeneity of an urban area;2) hydrological models for the simulation of the hydrologicalprocesses of the main geographical objects in the urban area;and 3) key strategies for a visual analytic platform to support what-if analyses in well-perceived way. The experiment was conducted using a community in Chongqing as a case study. The results demonstrate that the designed key technologies and functions of the proposed system can support what-if analysis and that what-if analysis is an important and useful concept for urban water management.
文摘Augmented reality is gaining traction across many domains.One of these is participation within geo-spatial planning projects.The interactive and three-dimensional nature of augmented reality is suitably placed to cater for a higher quality of communication and information exchange in planning processes.Thus,this research provides an overview of the use of AR in planning processes,specifically regarding the participation aspect,through an open-access systematic literature review,for which the investigation identifies 35 articles concerning the current state-of-the-art of augmented reality in planning.Findings indicate the rather limited use of augmented reality in the overall planning process due to technical limitations.Nonetheless,it shows to be a useful technology where it allows for higher user engagement and a clearer understanding among users in planning projects.Additionally,in participation,the technology offers a motivational solution and creates an overall higher acceptance and awareness of the plan,making the participants more engaged and represented in the planning process.
