首页 > 最新文献

International Conference and Exhibition on Computing for Geospatial Research & Application最新文献

英文 中文
Constructing natural neighbor interpolation based grid DEM using CUDA 基于CUDA的自然邻域插值网格DEM构建
Simin You, Jianting Zhang
Constructing digitial elevation model(DEM) from dense LiDAR points becomes increasingly important. Natural Neighbor Interpolation (NNI) is a popular approach to DEM construction from point datasets but is computationally intensive. In this study, we present a set of General Purpose computing Graphics Processing Unit(GPGPU) based algorithms that can significant speed up the process. Evaluating three real world LiDAR datasets each contains 6~7 million points shows that our CUDA based implementation on a NVIDIA GTX 480 GPU card is several times to nearly 2 orders faster than the current state-of-the-art NNI based DEM construction using graphics hardware acceleration.
利用密集激光雷达点构建数字高程模型(DEM)变得越来越重要。自然邻域插值(NNI)是一种从点数据集构建DEM的常用方法,但计算量大。在这项研究中,我们提出了一套基于通用计算图形处理单元(GPGPU)的算法,可以显著加快这一过程。评估三个真实世界的激光雷达数据集,每个数据集包含600 ~ 700万个点,结果表明,我们在NVIDIA GTX 480 GPU卡上基于CUDA的实现比使用图形硬件加速的当前最先进的基于NNI的DEM构建快几倍到近2个数量级。
{"title":"Constructing natural neighbor interpolation based grid DEM using CUDA","authors":"Simin You, Jianting Zhang","doi":"10.1145/2345316.2345349","DOIUrl":"https://doi.org/10.1145/2345316.2345349","url":null,"abstract":"Constructing digitial elevation model(DEM) from dense LiDAR points becomes increasingly important. Natural Neighbor Interpolation (NNI) is a popular approach to DEM construction from point datasets but is computationally intensive. In this study, we present a set of General Purpose computing Graphics Processing Unit(GPGPU) based algorithms that can significant speed up the process. Evaluating three real world LiDAR datasets each contains 6~7 million points shows that our CUDA based implementation on a NVIDIA GTX 480 GPU card is several times to nearly 2 orders faster than the current state-of-the-art NNI based DEM construction using graphics hardware acceleration.","PeriodicalId":400763,"journal":{"name":"International Conference and Exhibition on Computing for Geospatial Research & Application","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132969440","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Computational intelligence and neuromorphic computing potential for geospatial research and applications 计算智能和神经形态计算在地理空间研究和应用中的潜力
R. Pino
In today's highly mobile, networked, and interconnected internet world, the flow and volume of information is overwhelming and continuously increasing. Therefore, it is believed that the next frontier in technological evolution and development will rely in our ability to develop intelligent systems that can help us process, analyze, and make-sense of information autonomously just as a well-trained and educated human expert. In computational intelligence, neuromorphic computing promises to allow for the development of computing systems able to imitate natural neuro-biological processes that will form the foundation for intelligent system architectures. This is achieved by artificially re-creating the highly parallelized computing architecture of the mammalian brain. As an interdisciplinary technology inspired from biology, artificial neural systems have been successfully utilized in many applications, such as control systems, signal processing, pattern recognition, vision systems, and robotics etc. In addition, the emerging neuromorphic computing field can also exploit the characteristic behavior of novel material systems with advanced processing techniques to achieve very large scale integration with highly parallel neural architectures for the fabrication physical architectures. This talk will focus on the technological challenges that we are seeking to overcome to enable intelligent parallel neuromorphic computing systems.
在当今高度移动、网络化、互联互通的互联网世界中,信息的流量和数量势不可挡,而且还在不断增加。因此,人们相信,技术进化和发展的下一个前沿将依赖于我们开发智能系统的能力,这些系统可以帮助我们像受过良好训练和教育的人类专家一样自主地处理、分析和理解信息。在计算智能中,神经形态计算承诺允许开发能够模仿自然神经生物过程的计算系统,这将构成智能系统架构的基础。这是通过人工重建哺乳动物大脑的高度并行计算架构来实现的。人工神经系统作为一门受生物学启发的跨学科技术,已成功地应用于控制系统、信号处理、模式识别、视觉系统和机器人等领域。此外,新兴的神经形态计算领域还可以利用先进的处理技术,利用新型材料系统的特征行为,实现与制造物理体系结构高度并行的神经体系结构的大规模集成。本次演讲将集中讨论我们正在努力克服的技术挑战,以实现智能并行神经形态计算系统。
{"title":"Computational intelligence and neuromorphic computing potential for geospatial research and applications","authors":"R. Pino","doi":"10.1145/2345316.2345325","DOIUrl":"https://doi.org/10.1145/2345316.2345325","url":null,"abstract":"In today's highly mobile, networked, and interconnected internet world, the flow and volume of information is overwhelming and continuously increasing. Therefore, it is believed that the next frontier in technological evolution and development will rely in our ability to develop intelligent systems that can help us process, analyze, and make-sense of information autonomously just as a well-trained and educated human expert. In computational intelligence, neuromorphic computing promises to allow for the development of computing systems able to imitate natural neuro-biological processes that will form the foundation for intelligent system architectures. This is achieved by artificially re-creating the highly parallelized computing architecture of the mammalian brain. As an interdisciplinary technology inspired from biology, artificial neural systems have been successfully utilized in many applications, such as control systems, signal processing, pattern recognition, vision systems, and robotics etc. In addition, the emerging neuromorphic computing field can also exploit the characteristic behavior of novel material systems with advanced processing techniques to achieve very large scale integration with highly parallel neural architectures for the fabrication physical architectures. This talk will focus on the technological challenges that we are seeking to overcome to enable intelligent parallel neuromorphic computing systems.","PeriodicalId":400763,"journal":{"name":"International Conference and Exhibition on Computing for Geospatial Research & Application","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124748055","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effectiveness of scalable vector graphics (SVG) for client-side vector mapping 用于客户端矢量映射的可缩放矢量图形(SVG)的有效性
Theresa Firestine, F. Hardisty
Scalable Vector Graphics (SVG) is an effective web map technology for client-side vector mapping. We demonstrate this through a web map application developed for the Trans-Border Institute of the University of San Diego. The Trans-Border Institute currently releases reports summarizing data on the number of drug-related homicides in Mexico and produces maps to show drug-related killings in each Mexican state. Together, the reports and maps are used to inform U. S. audiences about the public security situation in Mexico and the effects of the war on drugs. The deadly consequences of the drug-war in Mexico become clear in the maps produced by the Trans-Border Institute. The maps, however, are not as effective as they could be because they are released as static images. These static images do not allow for the exploration of the data themselves and make it difficult to view changes over time. To facilitate data exploration and thereby assist the Trans-Border Institute in more effectively disseminating information on the drug-war in Mexico, an interactive web map was developed using SVG. For client side vector graphics, SVG provides clear advantages in that it is open, interoperable, and extensible and is resolution independent. In addition, behaviors, including animation, can be included in the markup file itself or added through scripting. These advantages make SVG optimal for developing high quality interactive (and non-interactive) vector maps. Despite these advantages, SVG has not been widely adopted. However, recent technological changes and trends have made competing systems, like Flash, less optimal and have heightened the awareness and ease of using SVG. Combined, these changes have paved the way for SVG becoming the most widely used client-side vector standard. Its effectiveness is demonstrated in an SVG-based, interactive web map developed for the Trans-Border Institute and shown in this presentation.
可缩放矢量图形(SVG)是一种用于客户端矢量映射的有效web地图技术。我们通过为圣地亚哥大学跨边界研究所开发的web地图应用程序来演示这一点。跨边境研究所目前发布的报告汇总了墨西哥与毒品有关的杀人案件的数据,并制作了墨西哥各州与毒品有关的杀人案件的地图。这些报告和地图共同用于向美国观众介绍墨西哥的公共安全状况以及毒品战争的影响。墨西哥毒品战争的致命后果在跨边境研究所制作的地图上变得清晰起来。然而,这些地图并没有达到它们应有的效果,因为它们是以静态图像的形式发布的。这些静态图像不允许对数据本身进行探索,并且很难查看随时间的变化。为了促进数据探索,从而协助跨界研究所更有效地传播关于墨西哥毒品战争的信息,使用SVG开发了交互式网络地图。对于客户端矢量图形,SVG提供了明显的优势,因为它是开放的、可互操作的、可扩展的,并且与分辨率无关。此外,行为(包括动画)可以包含在标记文件本身中,也可以通过脚本添加。这些优点使SVG成为开发高质量交互式(和非交互式)矢量地图的最佳选择。尽管有这些优点,SVG并没有被广泛采用。然而,最近的技术变化和趋势使得Flash等竞争系统不再那么理想,并提高了使用SVG的意识和易用性。这些变化为SVG成为使用最广泛的客户端矢量标准铺平了道路。它的有效性在为跨边界研究所开发的基于svg的交互式网络地图中得到了证明,并在本演示文稿中进行了展示。
{"title":"Effectiveness of scalable vector graphics (SVG) for client-side vector mapping","authors":"Theresa Firestine, F. Hardisty","doi":"10.1145/2345316.2345364","DOIUrl":"https://doi.org/10.1145/2345316.2345364","url":null,"abstract":"Scalable Vector Graphics (SVG) is an effective web map technology for client-side vector mapping. We demonstrate this through a web map application developed for the Trans-Border Institute of the University of San Diego. The Trans-Border Institute currently releases reports summarizing data on the number of drug-related homicides in Mexico and produces maps to show drug-related killings in each Mexican state. Together, the reports and maps are used to inform U. S. audiences about the public security situation in Mexico and the effects of the war on drugs. The deadly consequences of the drug-war in Mexico become clear in the maps produced by the Trans-Border Institute. The maps, however, are not as effective as they could be because they are released as static images. These static images do not allow for the exploration of the data themselves and make it difficult to view changes over time. To facilitate data exploration and thereby assist the Trans-Border Institute in more effectively disseminating information on the drug-war in Mexico, an interactive web map was developed using SVG. For client side vector graphics, SVG provides clear advantages in that it is open, interoperable, and extensible and is resolution independent. In addition, behaviors, including animation, can be included in the markup file itself or added through scripting. These advantages make SVG optimal for developing high quality interactive (and non-interactive) vector maps. Despite these advantages, SVG has not been widely adopted. However, recent technological changes and trends have made competing systems, like Flash, less optimal and have heightened the awareness and ease of using SVG. Combined, these changes have paved the way for SVG becoming the most widely used client-side vector standard. Its effectiveness is demonstrated in an SVG-based, interactive web map developed for the Trans-Border Institute and shown in this presentation.","PeriodicalId":400763,"journal":{"name":"International Conference and Exhibition on Computing for Geospatial Research & Application","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129625667","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Big data computing for traffic information by GPS sensing GPS传感交通信息大数据计算
Olli-Pekka Tossavainen
Real time traffic monitoring systems perform spatial and time dependent analysis of measurement data of different types such as traditional inductive loop detector data, microwave radar data, and GPS data. The goal of these systems is to provide information such as average speeds, volumes and densities on a given segment of a roadway. One of the fastest growing data source for traffic monitoring systems is GPS data collected from mobile devices. To some extent, in the industry GPS data is already replacing the traditional traffic sensing technologies. There is a large demand in industry and transportation agencies to have access to high resolution state of traffic on highways and arterial roads globally. This means that traffic information providers have to provide traffic information on a resolution that goes beyond the widely used TMC code based representation of the roadway. In order to obtain the high resolution state of traffic, noisy observations need to be fused into a mathematical model that represents the evolution of the system either based on physics or statistics. Common frameworks for fusing the data into physical models include for example Kalman filtering and particle filtering. Prior to the data fusion stage in the real time system, offline geospatial modelling has already been done. For example, construction and calibration of an accurate physics based traffic model includes tasks such as building a directed graph of the road network, detection of road geometry at lane level and speed limit detection. In all these tasks, GPS data is vital. Real time systems that use GPS data include geospatial pre-processing components such as map matching and path inference. The rapidly growing volume of GPS data cannot be handled using traditional methods but instead parallel computing systems are needed to handle the future volumes. Also, the new high resolution algorithms are developed to leverage the parallel processing frameworks. In this talk I will discuss directions taken to respond to the demand of providing high resolution information about the state of the traffic both in the context of modeling and implementation of a large scale system.
实时交通监控系统对传统的电感环路探测器数据、微波雷达数据和GPS数据等不同类型的测量数据进行时空相关分析。这些系统的目标是提供道路给定路段的平均速度、体积和密度等信息。从移动设备收集的GPS数据是交通监控系统中增长最快的数据源之一。在一定程度上,在行业中GPS数据已经取代了传统的交通传感技术。工业和运输机构对获得全球高速公路和主干道的高分辨率交通状态有很大的需求。这意味着交通信息提供者必须以一种分辨率提供交通信息,这种分辨率超出了广泛使用的基于道路表示的TMC代码。为了获得高分辨率的交通状态,需要将噪声观测融合到一个基于物理或统计的数学模型中,该模型代表了系统的演变。将数据融合到物理模型中的常用框架包括卡尔曼滤波和粒子滤波。在实时系统的数据融合阶段之前,已经完成了离线地理空间建模。例如,基于精确物理的交通模型的构建和校准包括构建路网的有向图、检测车道水平的道路几何形状和限速检测等任务。在所有这些任务中,GPS数据至关重要。使用GPS数据的实时系统包括地理空间预处理组件,如地图匹配和路径推断。快速增长的GPS数据量不能用传统方法处理,而需要并行计算系统来处理未来的数据量。同时,利用并行处理框架开发了新的高分辨率算法。在这次演讲中,我将讨论在大规模系统建模和实现的背景下,为响应提供关于交通状态的高分辨率信息的需求所采取的方向。
{"title":"Big data computing for traffic information by GPS sensing","authors":"Olli-Pekka Tossavainen","doi":"10.1145/2345316.2345324","DOIUrl":"https://doi.org/10.1145/2345316.2345324","url":null,"abstract":"Real time traffic monitoring systems perform spatial and time dependent analysis of measurement data of different types such as traditional inductive loop detector data, microwave radar data, and GPS data. The goal of these systems is to provide information such as average speeds, volumes and densities on a given segment of a roadway. One of the fastest growing data source for traffic monitoring systems is GPS data collected from mobile devices. To some extent, in the industry GPS data is already replacing the traditional traffic sensing technologies.\u0000 There is a large demand in industry and transportation agencies to have access to high resolution state of traffic on highways and arterial roads globally. This means that traffic information providers have to provide traffic information on a resolution that goes beyond the widely used TMC code based representation of the roadway.\u0000 In order to obtain the high resolution state of traffic, noisy observations need to be fused into a mathematical model that represents the evolution of the system either based on physics or statistics. Common frameworks for fusing the data into physical models include for example Kalman filtering and particle filtering.\u0000 Prior to the data fusion stage in the real time system, offline geospatial modelling has already been done. For example, construction and calibration of an accurate physics based traffic model includes tasks such as building a directed graph of the road network, detection of road geometry at lane level and speed limit detection. In all these tasks, GPS data is vital.\u0000 Real time systems that use GPS data include geospatial pre-processing components such as map matching and path inference. The rapidly growing volume of GPS data cannot be handled using traditional methods but instead parallel computing systems are needed to handle the future volumes. Also, the new high resolution algorithms are developed to leverage the parallel processing frameworks.\u0000 In this talk I will discuss directions taken to respond to the demand of providing high resolution information about the state of the traffic both in the context of modeling and implementation of a large scale system.","PeriodicalId":400763,"journal":{"name":"International Conference and Exhibition on Computing for Geospatial Research & Application","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132941668","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A promising future of computing for geospatial technologies 地理空间技术计算的美好未来
Lindi Liao
The explosion of the power and sophistication of computing applications in the past few years has revolutionized the way we live and work. This marked trend is of especial significance for geospatial computing, which directly relates to the very foundations of our society and essentially embraces all the diversification of its activities. Geospatial information, already important in many scientific and engineering disciplines, is increasingly becoming an integral component in consumer-driven technologies. How to further improve or enhance geospatial information processing, organizing, analysis, and visualization? Especially, handling rising flood of digital data from many difference sources puts serious technical and scientific challenges. With rapid progress of information processing and multiple disciplines, there are more and more promising computing technologies, which could be employed to solve these problems. At present, cloud computing, mobile computing, visual computing/GPU computing, business intelligence, and social computing have been playing key roles in geospatial applications. Some latest computing advancements, such as big data computing, heterogeneous computing, Internet of Things (IoT)/sensor computing, and bio-computing, have great potentials for the effective realization of information processing in the geospatial environment. This talk highlights the impacts of these current and prospective computing technologies on the future of the geo-world. Our consideration is intended to bring fresh thoughts to explore new directions for geospatial research and development. The talk also provides a vision of the ".geo" term and a combined outlook for both computer and geospatial communities, i.e., how computing technology is changing the landscape of geospatial applications and how diverse geospatial information processing requires the change of various computing technologies.
在过去的几年里,计算应用程序的能力和复杂性的爆炸式增长已经彻底改变了我们的生活和工作方式。这一显著趋势对地理空间计算具有特别重要的意义,因为地理空间计算直接关系到我们社会的基础,并且基本上包含了社会活动的所有多样化。地理空间信息在许多科学和工程学科中已经很重要,正日益成为消费者驱动技术的一个不可或缺的组成部分。如何进一步改进或加强地理空间信息的处理、组织、分析和可视化?特别是,处理来自许多不同来源的不断增长的数字数据带来了严重的技术和科学挑战。随着信息处理和多学科的快速发展,有越来越多的计算技术可以用来解决这些问题。目前,云计算、移动计算、视觉计算/GPU计算、商业智能和社会计算在地理空间应用中发挥着重要作用。一些最新的计算进展,如大数据计算、异构计算、物联网/传感器计算、生物计算等,对于有效实现地理空间环境下的信息处理具有巨大的潜力。这次演讲强调了这些当前和未来的计算技术对未来地球世界的影响。我们的考虑旨在为探索地理空间研究和发展的新方向带来新的思路。该演讲还提供了“。“地理”术语,以及对计算机和地理空间社区的综合展望,即计算技术如何改变地理空间应用的格局,以及不同的地理空间信息处理如何要求改变各种计算技术。
{"title":"A promising future of computing for geospatial technologies","authors":"Lindi Liao","doi":"10.1145/2345316.2345318","DOIUrl":"https://doi.org/10.1145/2345316.2345318","url":null,"abstract":"The explosion of the power and sophistication of computing applications in the past few years has revolutionized the way we live and work. This marked trend is of especial significance for geospatial computing, which directly relates to the very foundations of our society and essentially embraces all the diversification of its activities.\u0000 Geospatial information, already important in many scientific and engineering disciplines, is increasingly becoming an integral component in consumer-driven technologies. How to further improve or enhance geospatial information processing, organizing, analysis, and visualization? Especially, handling rising flood of digital data from many difference sources puts serious technical and scientific challenges.\u0000 With rapid progress of information processing and multiple disciplines, there are more and more promising computing technologies, which could be employed to solve these problems. At present, cloud computing, mobile computing, visual computing/GPU computing, business intelligence, and social computing have been playing key roles in geospatial applications. Some latest computing advancements, such as big data computing, heterogeneous computing, Internet of Things (IoT)/sensor computing, and bio-computing, have great potentials for the effective realization of information processing in the geospatial environment.\u0000 This talk highlights the impacts of these current and prospective computing technologies on the future of the geo-world. Our consideration is intended to bring fresh thoughts to explore new directions for geospatial research and development. The talk also provides a vision of the \".geo\" term and a combined outlook for both computer and geospatial communities, i.e., how computing technology is changing the landscape of geospatial applications and how diverse geospatial information processing requires the change of various computing technologies.","PeriodicalId":400763,"journal":{"name":"International Conference and Exhibition on Computing for Geospatial Research & Application","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133264525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Routing-based map matching for extracting routes from GPS trajectories 基于路由的地图匹配从GPS轨迹中提取路线
Terry W. Griffin, Y. Huang, Shawn Seals
This paper introduces a novel offline map matching approach. We develop a routing-based map matching approach for standardizing identified routes in a collected set of GPS trajectories. Our approach first identifies key waypoints in a user's GPS trajectory using a modified Peucker curve reduction algorithm. Subsequently, it sends the key waypoints to a black-box driving directions service which returns a route utilizing each of the key waypoints. The returned route is a standardized representation of the original GPS trajectory constructed using the minimum necessary set of points. A filter-and-refine approach is used to identify the incorrect portion of the returned route and a refine step is carried out by eliminating the waypoints what leads to the incorrect matching. Experiments results showed that the proposed approach works well for a data-set of 10 volunteers each collecting data an average of 34.3 days.
本文介绍了一种新的离线地图匹配方法。我们开发了一种基于路由的地图匹配方法,用于在收集的GPS轨迹集中标准化已识别的路线。我们的方法首先使用改进的Peucker曲线约简算法识别用户GPS轨迹中的关键路点。随后,它将关键路点发送给黑匣子驾驶方向服务,该服务使用每个关键路点返回一条路线。返回的路线是使用最小必要点集构造的原始GPS轨迹的标准化表示。使用过滤和细化方法来识别返回路线的不正确部分,并通过消除导致不正确匹配的路点来执行细化步骤。实验结果表明,该方法适用于10名志愿者的数据集,每个志愿者平均收集34.3天的数据。
{"title":"Routing-based map matching for extracting routes from GPS trajectories","authors":"Terry W. Griffin, Y. Huang, Shawn Seals","doi":"10.1145/1999320.1999344","DOIUrl":"https://doi.org/10.1145/1999320.1999344","url":null,"abstract":"This paper introduces a novel offline map matching approach. We develop a routing-based map matching approach for standardizing identified routes in a collected set of GPS trajectories. Our approach first identifies key waypoints in a user's GPS trajectory using a modified Peucker curve reduction algorithm. Subsequently, it sends the key waypoints to a black-box driving directions service which returns a route utilizing each of the key waypoints. The returned route is a standardized representation of the original GPS trajectory constructed using the minimum necessary set of points. A filter-and-refine approach is used to identify the incorrect portion of the returned route and a refine step is carried out by eliminating the waypoints what leads to the incorrect matching. Experiments results showed that the proposed approach works well for a data-set of 10 volunteers each collecting data an average of 34.3 days.","PeriodicalId":400763,"journal":{"name":"International Conference and Exhibition on Computing for Geospatial Research & Application","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117189191","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 13
Analyzing tropical cyclone tracks of North Indian Ocean 北印度洋热带气旋路径分析
M. Paliwal, A. Patwardhan, N. L. Sarda
Cyclones are regarded as one of the most dangerous meteorological phenomena of the tropical region. The probability of landfall of a tropical cyclone depends on its movement (trajectory). Analysis of trajectories of tropical cyclones could be useful for identifying potentially predictable characteristics. In this study, tropical cyclone tracks over the North Indian Ocean basin have been analyzed and grouped into clusters based on their spatial characteristics. For the identified clusters we have also examined characteristics such as life span, maximum sustained wind speed, landfall, seasonality. The resultant clusters are forming clear groupings on some of these characteristics. The cyclones with higher maximum wind speed and longest life span are grouped in to one cluster. Another cluster includes short duration cyclonic events that are mostly deep depressions and significant for rainfall over Eastern and Central India. The clustering approach is likely to prove useful for analysis of events of significance with regard to impacts.
气旋被认为是热带地区最危险的气象现象之一。热带气旋登陆的概率取决于它的运动(轨迹)。对热带气旋的轨迹进行分析对于确定可能可预测的特征是有用的。本研究对北印度洋盆地的热带气旋路径进行了分析,并根据其空间特征将其分组。对于已确定的群集,我们还研究了寿命、最大持续风速、登陆、季节性等特征。由此产生的集群正在对其中一些特征形成明确的分组。将最大风速较大、寿命最长的气旋归为一组。另一组包括短时间的气旋事件,这些事件主要是深度洼地,对印度东部和中部的降雨有重要影响。聚类方法很可能证明对分析影响方面的重要事件是有用的。
{"title":"Analyzing tropical cyclone tracks of North Indian Ocean","authors":"M. Paliwal, A. Patwardhan, N. L. Sarda","doi":"10.1145/1999320.1999338","DOIUrl":"https://doi.org/10.1145/1999320.1999338","url":null,"abstract":"Cyclones are regarded as one of the most dangerous meteorological phenomena of the tropical region. The probability of landfall of a tropical cyclone depends on its movement (trajectory). Analysis of trajectories of tropical cyclones could be useful for identifying potentially predictable characteristics. In this study, tropical cyclone tracks over the North Indian Ocean basin have been analyzed and grouped into clusters based on their spatial characteristics. For the identified clusters we have also examined characteristics such as life span, maximum sustained wind speed, landfall, seasonality. The resultant clusters are forming clear groupings on some of these characteristics. The cyclones with higher maximum wind speed and longest life span are grouped in to one cluster. Another cluster includes short duration cyclonic events that are mostly deep depressions and significant for rainfall over Eastern and Central India. The clustering approach is likely to prove useful for analysis of events of significance with regard to impacts.","PeriodicalId":400763,"journal":{"name":"International Conference and Exhibition on Computing for Geospatial Research & Application","volume":"130 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126058248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Windows Phone 7 workshop Windows Phone 7研讨会
Joel Reyes, Zhiming Xue
Are you interested to write an application or a game and make it available on Windows Phone 7 devices through Microsoft's Marketplace? At the workshop, we will demonstrate how you can build Windows Phone 7 applications or games, what tools are available, what public sector specific applications have been created, how you can publish your applications, etc. We will answer any questions you may have about Windows Phone 7. So come on over and join us in this fun workshop. Bring your computer if you like. Or, you can play with our demo phones and pre-installed applications.
你是否有兴趣编写一款应用或游戏,并通过微软市场将其投放到Windows Phone 7设备上?在研讨会上,我们将演示如何构建Windows Phone 7应用程序或游戏,可用的工具,已创建的公共部门特定应用程序,如何发布应用程序等。我们将回答您关于Windows Phone 7的任何问题。快来加入我们这个有趣的工作坊吧。如果你愿意,带上你的电脑。或者,您可以使用我们的演示手机和预装的应用程序。
{"title":"Windows Phone 7 workshop","authors":"Joel Reyes, Zhiming Xue","doi":"10.1145/1999320.1999404","DOIUrl":"https://doi.org/10.1145/1999320.1999404","url":null,"abstract":"Are you interested to write an application or a game and make it available on Windows Phone 7 devices through Microsoft's Marketplace? At the workshop, we will demonstrate how you can build Windows Phone 7 applications or games, what tools are available, what public sector specific applications have been created, how you can publish your applications, etc. We will answer any questions you may have about Windows Phone 7. So come on over and join us in this fun workshop. Bring your computer if you like. Or, you can play with our demo phones and pre-installed applications.","PeriodicalId":400763,"journal":{"name":"International Conference and Exhibition on Computing for Geospatial Research & Application","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126180579","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Collaborative development of open standards for expanding GeoWeb to the internet of things 协作开发开放标准,将GeoWeb扩展到物联网
G. Percivall
In a multi-vendor environment, development of the Internet of Things (IoT) will be limited without the emergence of open, consensus standards that enable collaboration. Such standards will define an infrastructure that raises the level of services and quality of information for the marketplace thereby providing more opportunities, particularly for the vendors that collaborate to define the standards. Collaborative development is key to consensus adoption and wide use of information technology standards. Development of effective open standards is a balancing act. The standards need to be agile and adaptive to the rapidly changing developments in the marketplace. The standards also need to have a sound engineering foundation and respect relevant aspects of the existing technology base. The use of open standards to connect components, applications, and content -- allowing a "white box" view on the components' functionality and interfaces without revealing implementation details -- fulfills the industry requirement for protection of intellectual property and the user requirement for transparency. The COM.Geo Workshop on "Expanding GeoWeb to an Internet of Things" is an excellent opportunity to discuss how organizations can increase their business based on quality location information in the Internet of Things. Quality information in a multi-vendor environment can only be obtained using standards. An industry-based consortium is needed to establish effective standards for information sharing about location in the Internet of Things. The Open Geospatial Consortium (OGC) has a proven process for industry-wide collaborative development of efficient standards for spatial and location information. The mission of OGC is to serve as a global forum for the development and promotion of open standards and techniques in the area of geoprocessing and related information technologies. The OGC has 410+ members - geospatial technology software vendors, systems integrators, government agencies and universities - participating in the consensus standards development and maintenance process. Through its Specification Program, Interoperability Program, and Marketing and Communications Program, the OGC develops, releases and promotes open standards for spatial processing. Technology and content providers collaborate in the OGC because they recognize that lack of interoperability is a bottleneck that slows market expansion. They know that interoperability enabled by open standards positions them to both compete more effectively in the marketplace and to seek new market opportunities. The OGC recommends the following steps for advancing the GeoWeb to an IoT-based marketplace: • Definition of a standards-based "GeoWeb meets IoT" framework to spur coordinated application development. • Coordination of standards for location in IoT with other relevant standards development organizations. • Discussions of the framework in the OGC Specification Working Groups to identify
在多供应商环境中,如果没有开放的、共识的标准来实现协作,物联网(IoT)的发展将受到限制。这样的标准将定义一个基础设施,提高市场的服务水平和信息质量,从而提供更多的机会,特别是对于合作定义标准的供应商。协作开发是一致采用和广泛使用信息技术标准的关键。开发有效的开放标准是一种平衡行为。标准需要是敏捷的,并且能够适应市场中快速变化的开发。标准还需要有良好的工程基础,并尊重现有技术基础的相关方面。使用开放标准来连接组件、应用程序和内容——允许在不显示实现细节的情况下查看组件的功能和接口的“白盒”视图——满足了保护知识产权的行业需求和用户对透明度的需求。COM。以“将GeoWeb扩展到物联网”为主题的地理研讨会是一个绝佳的机会,可以讨论组织如何基于物联网中的高质量位置信息来增加业务。多供应商环境中的质量信息只能通过使用标准获得。为了在物联网中建立有效的位置信息共享标准,需要一个以行业为基础的联盟。开放地理空间联盟(Open Geospatial Consortium, OGC)已经为空间和位置信息的高效标准的全行业协作开发提供了一个经过验证的流程。OGC的使命是作为一个全球论坛,在地理信息处理和相关信息技术领域开发和推广开放标准和技术。OGC有410多个成员——地理空间技术软件供应商、系统集成商、政府机构和大学——参与共识标准的开发和维护过程。OGC通过其规范计划、互操作性计划、营销和通信计划,开发、发布和推广空间处理的开放标准。技术和内容提供商在OGC中合作,因为他们认识到缺乏互操作性是减缓市场扩展的瓶颈。他们知道,开放标准所支持的互操作性使他们能够在市场上更有效地竞争,并寻求新的市场机会。OGC建议采取以下步骤将GeoWeb推进到基于物联网的市场:•定义基于标准的“GeoWeb满足物联网”框架,以促进协调的应用程序开发。与其他相关标准开发组织协调物联网定位标准。•在OGC规范工作组中讨论框架,以确定是否需要额外的标准。•使用OGC互操作性项目方法进行嵌入式移动生态系统测试。
{"title":"Collaborative development of open standards for expanding GeoWeb to the internet of things","authors":"G. Percivall","doi":"10.1145/1999320.1999398","DOIUrl":"https://doi.org/10.1145/1999320.1999398","url":null,"abstract":"In a multi-vendor environment, development of the Internet of Things (IoT) will be limited without the emergence of open, consensus standards that enable collaboration. Such standards will define an infrastructure that raises the level of services and quality of information for the marketplace thereby providing more opportunities, particularly for the vendors that collaborate to define the standards. Collaborative development is key to consensus adoption and wide use of information technology standards.\u0000 Development of effective open standards is a balancing act. The standards need to be agile and adaptive to the rapidly changing developments in the marketplace. The standards also need to have a sound engineering foundation and respect relevant aspects of the existing technology base. The use of open standards to connect components, applications, and content -- allowing a \"white box\" view on the components' functionality and interfaces without revealing implementation details -- fulfills the industry requirement for protection of intellectual property and the user requirement for transparency.\u0000 The COM.Geo Workshop on \"Expanding GeoWeb to an Internet of Things\" is an excellent opportunity to discuss how organizations can increase their business based on quality location information in the Internet of Things. Quality information in a multi-vendor environment can only be obtained using standards. An industry-based consortium is needed to establish effective standards for information sharing about location in the Internet of Things. The Open Geospatial Consortium (OGC) has a proven process for industry-wide collaborative development of efficient standards for spatial and location information.\u0000 The mission of OGC is to serve as a global forum for the development and promotion of open standards and techniques in the area of geoprocessing and related information technologies. The OGC has 410+ members - geospatial technology software vendors, systems integrators, government agencies and universities - participating in the consensus standards development and maintenance process. Through its Specification Program, Interoperability Program, and Marketing and Communications Program, the OGC develops, releases and promotes open standards for spatial processing. Technology and content providers collaborate in the OGC because they recognize that lack of interoperability is a bottleneck that slows market expansion. They know that interoperability enabled by open standards positions them to both compete more effectively in the marketplace and to seek new market opportunities.\u0000 The OGC recommends the following steps for advancing the GeoWeb to an IoT-based marketplace:\u0000 • Definition of a standards-based \"GeoWeb meets IoT\" framework to spur coordinated application development.\u0000 • Coordination of standards for location in IoT with other relevant standards development organizations.\u0000 • Discussions of the framework in the OGC Specification Working Groups to identify ","PeriodicalId":400763,"journal":{"name":"International Conference and Exhibition on Computing for Geospatial Research & Application","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114457022","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 1
Navigation-to-thing and highly-context-focused 'around me' use cases 导航到事物和高度关注上下文的“我周围”用例
P. Bouzide
The models for representing, maintaining and using "navigable" geographic features are evolving from a 2D centerline roadway model, through a highly detailed 3D pedestrian, indoor and multimodal model and into a Internet of (Locatable) Things. As this evolution proceeds, the volume of data that can be processed and delivered to end user applications could reach an untenable torrent, both from a human cognition as well as a machine resource perspective. The key as always is information, not just data. Contextualized interpretation, not just a collection of undifferentiated ground truth facts. What's needed at the edges of the GeoWeb - particularly for relatively network and processing challenged mobile devices - is the notion of "byte-sized" (pun intended) content that's "right-sized" for each individual actor based on highly dynamic personal or organizational usage contexts. It's clear that edge applications will continue to play a role in providing such a contextual filter. Less obvious is how other GeoWeb participants will also provide contextual value. The application developer interface to a geodata provider is a pathway for application development time, product creation time and run time information exchange. This exchange will inform the processes and business rules that a data provider uses to prioritize the gathering, processing and correlation of observations, the mediation of geodata product quality level guarantees, and the delivery models for the application-ready features themselves. The effectiveness of this pathway will depend on low processing latencies, not only between observation detection and feature change availability, but also between an end user's context and what features are provided at what levels of detail. There is ample precedent in the current vehicle navigation ecosystem for leveraging this pathway to make the resulting user experience compelling and economically viable. Moving to an integrated 3D model of the built and natural world as a framework for an Internet of Things will require enriching and formalizing this interface in order to build contextual value into the GeoWeb.
用于表示、维护和使用“可导航”地理特征的模型正在从2D中心线道路模型,到高度详细的3D行人、室内和多模式模型,再到物联网(可定位)。随着这种演变的进行,无论是从人类认知还是从机器资源的角度来看,可以处理并交付给最终用户应用程序的数据量可能会达到无法维持的水平。关键始终是信息,而不仅仅是数据。语境化的解释,而不仅仅是无差别的基础事实的集合。GeoWeb边缘所需要的——特别是对于网络和处理相对困难的移动设备——是“字节大小”(双关语)内容的概念,它基于高度动态的个人或组织使用环境,为每个参与者“适当大小”。很明显,边缘应用程序将继续在提供这种上下文过滤器方面发挥作用。不太明显的是,其他GeoWeb参与者也将如何提供上下文价值。应用程序开发人员到地理数据提供程序的接口是应用程序开发时、产品创建时和运行时信息交换的途径。这种交换将告知数据提供者用于对观测的收集、处理和关联进行优先排序的流程和业务规则,地理数据产品质量水平保证的中介,以及应用程序就绪特性本身的交付模型。这种途径的有效性将取决于低处理延迟,不仅在观察检测和特征变化可用性之间,而且在最终用户的上下文和在什么细节级别上提供什么特征之间。在当前的车辆导航生态系统中,有很多先例可以利用这一途径,使最终的用户体验引人注目,并在经济上可行。将建筑和自然世界的集成3D模型作为物联网框架,将需要丰富和形式化该接口,以便在GeoWeb中构建上下文价值。
{"title":"Navigation-to-thing and highly-context-focused 'around me' use cases","authors":"P. Bouzide","doi":"10.1145/1999320.1999393","DOIUrl":"https://doi.org/10.1145/1999320.1999393","url":null,"abstract":"The models for representing, maintaining and using \"navigable\" geographic features are evolving from a 2D centerline roadway model, through a highly detailed 3D pedestrian, indoor and multimodal model and into a Internet of (Locatable) Things. As this evolution proceeds, the volume of data that can be processed and delivered to end user applications could reach an untenable torrent, both from a human cognition as well as a machine resource perspective.\u0000 The key as always is information, not just data. Contextualized interpretation, not just a collection of undifferentiated ground truth facts. What's needed at the edges of the GeoWeb - particularly for relatively network and processing challenged mobile devices - is the notion of \"byte-sized\" (pun intended) content that's \"right-sized\" for each individual actor based on highly dynamic personal or organizational usage contexts.\u0000 It's clear that edge applications will continue to play a role in providing such a contextual filter. Less obvious is how other GeoWeb participants will also provide contextual value. The application developer interface to a geodata provider is a pathway for application development time, product creation time and run time information exchange. This exchange will inform the processes and business rules that a data provider uses to prioritize the gathering, processing and correlation of observations, the mediation of geodata product quality level guarantees, and the delivery models for the application-ready features themselves. The effectiveness of this pathway will depend on low processing latencies, not only between observation detection and feature change availability, but also between an end user's context and what features are provided at what levels of detail.\u0000 There is ample precedent in the current vehicle navigation ecosystem for leveraging this pathway to make the resulting user experience compelling and economically viable. Moving to an integrated 3D model of the built and natural world as a framework for an Internet of Things will require enriching and formalizing this interface in order to build contextual value into the GeoWeb.","PeriodicalId":400763,"journal":{"name":"International Conference and Exhibition on Computing for Geospatial Research & Application","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114511049","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
International Conference and Exhibition on Computing for Geospatial Research & Application
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1