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2011 11th International Conference on ITS Telecommunications最新文献

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Robust hand gesture recognition system using motion templates 鲁棒手势识别系统使用运动模板
Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060095
Shrikant Kulkarni, H. Manoj, S. David, V. Madumbu, Y. Kumar
This paper presents a robust hand gesture analysis system. The approach uses the video analytic technique of motion templates rather than conventional gesture recognition algorithms. Also, it utilizes background modeling and skin pixel detection which further strengthens the approach by making it tolerant to background clutter and noise. In addition it reduces the false detections to a considerable extent. The system does not necessitate the user to wear any coloured caps or gloves for the hands. Encouraging results were obtained and it was found that the methodology is flexible and can be manipulated to suit gesture based interaction as per the requirements of a system. It can also be implemented as a standalone system.
提出了一种鲁棒的手势分析系统。该方法采用运动模板的视频分析技术,而不是传统的手势识别算法。此外,该方法利用背景建模和皮肤像素检测,进一步增强了该方法对背景杂波和噪声的容忍度。此外,它在很大程度上减少了误检。该系统不需要用户戴任何彩色的帽子或手套。获得了令人鼓舞的结果,并且发现该方法是灵活的,可以根据系统的要求进行操作以适应基于手势的交互。它也可以作为一个独立的系统来实现。
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引用次数: 4
Effects and potentials of LEZ in Europe: Do they really work? 低经济区在欧洲的影响和潜力:它们真的有效吗?
Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060055
D. Leihs
Low Emission Zones (LEZ) are the municipalities' response to the European Clean Air Directive, which obliges regional governments to take appropriate measures to not exceed certain thresholds for pollutants like particle matter (PM), NOX, etc Most LEZ are regulating the access for polluting cars, though the regulations are different and act differently in changing the driver's behavior. Mostly, the pollution class is subject to the regulation; mostly it aims at the particle matter emissions, sometimes the vehicle class is considered, sometimes both is combined. The access regulation is either a pure drive ban or a charge has to be paid. Drive bans are easy to implement as they are a variant of traffic law. In addition they work immediately as people are forced to change their habits immediately. Though, pure driving bans are disadvantageous for certain population groups like inactive households or small trade, starting a public debate about the appropriateness of the measure that overshadows environmental opinion making. Moreover, long transition phases and vast exemptions foil the emission targets. By collecting charges, people are not excluded from accessing the city and may adopt according to their individual capabilities and needs. The experience shows that emission targets and public acceptance are well achievable with charged low emission zones. Regarding greenhouse gas (GHG), the general public does not distinguish between pollutants that are threatening health and emissions that promote global warming — in the case of car use, both originate from the same process. Driving ban zones cannot be used as too many people would be excluded; The principle of charged zones though does not excluded from entering the city, but people are encouraged to change mobility behavior according to their capabilities, individual situation and needs. The recently published EC White Paper of Transport targets at a 50% drop of CO2 emissions from private cars in cities. So there is hardly an alternative to changing mobility behavior. Offering electric cars in the shop windows of car vendors is not enough. People need a stimulus to activate behavioral changes.
低排放区(LEZ)是市政当局对欧洲清洁空气指令的回应,该指令要求地方政府采取适当措施,不超过颗粒物质(PM)、氮氧化物等污染物的一定阈值。大多数低排放区都在规范污染汽车的进入,尽管法规不同,在改变驾驶员行为方面的行动也不同。大多数情况下,污染等级受监管;主要针对颗粒物排放,有时考虑车辆类别,有时两者结合。访问规则要么是纯粹的驱动器禁止,要么必须支付费用。驾驶禁令很容易实施,因为它们是交通法的一种变体。此外,他们立即工作,因为人们被迫立即改变他们的习惯。但是,单纯的禁止驾驶对不活跃的家庭或小商贩等特定人群不利,因此,围绕该措施是否合适的舆论争论比环境舆论的形成更为激烈。此外,漫长的过渡阶段和大量的豁免阻碍了排放目标。通过收费,人们不被排除在城市之外,可以根据个人的能力和需要采取行动。经验表明,设立收费的低排放区是很容易达到排放目标和公众接受程度的。关于温室气体(GHG),一般公众不区分威胁健康的污染物和促进全球变暖的排放物——在汽车使用的情况下,两者来自同一个过程。禁止驾驶区不能使用,因为太多人会被排除在外;收费区的原则虽然不排除进入城市,但鼓励人们根据自己的能力、个人情况和需求改变出行行为。最近发布的欧盟交通白皮书的目标是将城市私家车的二氧化碳排放量减少50%。因此,除了改变出行行为,几乎没有其他选择。在汽车销售商的橱窗里提供电动汽车是不够的。人们需要刺激来激活行为改变。
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引用次数: 1
Securing computer networks communication by modifying computer network communication protocols 通过修改计算机网络通信协议来保护计算机网络通信
Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060130
M. Youssef
This research presents a technique to protect computer networks communication by modifying communication protocol identifier. The main advantage of this technique is preventing "man in the middle" meddling from reconstructing sessions from collected data. Consequently, this approach can overcome seamless attacks performed by passive tapping and nonintrusive data captu ring techniques.
提出了一种通过修改通信协议标识符来保护计算机网络通信的技术。这种技术的主要优点是防止“中间人”干预从收集的数据中重建会话。因此,这种方法可以克服由被动窃听和非侵入性数据捕获环技术执行的无缝攻击。
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引用次数: 4
A modified decision directed channel tracking of 802.11p OFDM system 一种改进的802.11p OFDM系统决策定向信道跟踪方法
Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060140
Kao-Peng Chou, Che-Kang Sun
A modified decision directed channel interpolation techniques of orthogonal frequency-division multiplexing (OFDM) system is proposed in this paper. The decision directed channel tracking method in OFDM system always encounters the error propagation problem. To make a practical design, the modified decision directed method in this paper is a low complexity algorithm which can lower the effect of decision error propagation. Simulation results show that the proposed algorithm outperform conventional block interpolations as the SNR exceed certain level.
提出了一种改进的正交频分复用(OFDM)系统的决策导向信道插值技术。OFDM系统中的决策定向信道跟踪方法经常遇到误差传播问题。从实际设计来看,本文改进的决策导向方法是一种低复杂度的算法,可以降低决策错误传播的影响。仿真结果表明,当信噪比超过一定水平时,该算法优于传统的块插值算法。
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引用次数: 7
Estimation of fuel flow for telematics-enabled adaptive fuel and time efficient vehicle routing 基于远程信息处理的自适应燃油和时间效率车辆路线的燃油流量估计
Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060041
I. Kolmanovsky, Kevin McDonough, O. Gusikhin
This paper reports the development of vehicle fuel flow estimation algorithms based entirely on signals available through the standard OBD-II interface. The paper also illustrates the use of the resulting fuel flow estimates for adaptation and optimization. The fuel flow estimation algorithm functionality differs depending on the powertrain type (gasoline versus diesel, naturally aspirated versus boosted, conventional versus hybrid electric, etc.). To facilitate fuel and time efficient vehicle routing, an adaptation algorithm based on the recursive least squares (Kalman filtering) is defined. This adaptation algorithm learns the expected values and the variances of fuel consumption and travel time from multiple drives of a given vehicle over a given route segment. The use of adaptation from data reduces the need for accurate predictive modeling of vehicle fuel consumption and travel time which depend on difficult to predict and incorporate into the model traffic conditions, topographical road information, weather conditions, and inherently present vehicle-to-vehicle, driver-to-driver and fuel variability. The use of the adaptive models for optimization of vehicle travel is showcased with a simple example of optimizing time of day of departure decisions for a service vehicle. Finally, the use of a large interconnected network of adaptive models for vehicle fleet operation optimization is discussed.
本文报道了完全基于标准OBD-II接口信号的车辆燃油流量估计算法的发展。本文还说明了使用所得的燃料流量估计进行适应和优化。燃油流量估计算法的功能取决于动力系统类型(汽油与柴油、自然吸气与增压、传统与混合动力等)。为了实现省油省时的车辆路径选择,定义了一种基于递推最小二乘(卡尔曼滤波)的自适应算法。该自适应算法从给定车辆在给定路段上的多个驾驶中学习油耗和行驶时间的期望值和方差。使用数据自适应减少了对车辆油耗和行驶时间的准确预测建模的需求,这些建模依赖于难以预测和纳入模型的交通条件、地形道路信息、天气条件以及固有的车辆对车辆、驾驶员对驾驶员和燃料的可变性。使用自适应模型来优化车辆出行,以优化服务车辆的出发时间决策为例。最后,讨论了大型互联网络自适应模型在车队运行优化中的应用。
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引用次数: 13
3GPP Evolved Packet Core support for distributed mobility anchors: Control enhancements for GW relocation 3GPP 演进分组核心支持分布式移动锚点:全球移动网络搬迁的控制增强功能
Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060065
W. Hahn
This paper discusses the 3GPP Evolved Packet Core (EPC) as a deployment of a distributed data plane architecture. Distributed GWs in connection with user mobility may result in the need to optimize data routing by GW relocation. It is proposed to include the GWs itself in the decision on GW relocation what is currently done in the control plane node (mobility management entity) only. Proposals are made to allow the relocation also for active mode devices (user activity detection), to detect the occurrence of a non optimal routing situation and to detect situations where a relocation should be suppressed to avoid particularly poor user experience. These improvements are compared with other solutions.
本文讨论了作为分布式数据平面架构部署的 3GPP 演进分组核心 (EPC)。与用户移动性相关的分布式 GW 可能导致需要通过 GW 迁移来优化数据路由。建议将 GW 本身纳入 GW 迁移的决策中,而目前这仅在控制平面节点(移动性管理实体)中完成。建议允许活动模式设备也进行重新定位(用户活动检测),检测非最佳路由情况的发生,并检测应抑制重新定位以避免特别差的用户体验的情况。并将这些改进与其他解决方案进行了比较。
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引用次数: 20
Blind detection of the number of transmitting antennas for spatially-correlated MIMO systems 空间相关MIMO系统发射天线数的盲检测
Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060100
K. Hassan, C. N. Nzeza, R. Gautier, E. Radoi, M. Berbineau, I. Dayoub
The blind interception process of multiple-input multiple-output (MIMO) signals have recently gained more attention. The number of transmitting antennas is an important information for many blind MIMO algorithms. In this paper, several algorithms for blind detection of the number of transmitting antennas are presented. These different algorithms are evaluated and a performance comparison is presented. Spatial correlation is a crucial factor for practical MIMO systems. This paper addresses for the first time the problem of blind detection of the number of transmitting antennas in spatially correlated MIMO systems.
多输入多输出(MIMO)信号的盲截获过程近年来受到越来越多的关注。发射天线数是许多盲MIMO算法的重要信息。本文介绍了几种盲检测发射天线数的算法。对这些不同的算法进行了评估,并进行了性能比较。空间相关性是实际MIMO系统的关键因素。本文首次研究了空间相关MIMO系统中发射天线数的盲检测问题。
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引用次数: 13
A theoretical analysis of the Extended Kalman Filter for data fusion in vehicular positioning 扩展卡尔曼滤波在车辆定位数据融合中的理论分析
Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060063
R. Toledo-Moreo, D. Gruyer, A. Lambert
Global Navigation Satellite Systems (GNSS) offer a great value for many location-based services and applications. However, due to their limitations in terms of coverage, continuity, accuracy and integrity, GNSS are often fused with some extra aiding sensors. To perform the data fusion of multiple sensors it is possible to find in the literature of the field a large number of approaches that claim better accuracy, efficiency in computational terms or robustness than a reference one that is given for comparison. Normally, this reference is the Extended Kalman Filter (EKF), the most common version of the Kalman Filter for non-linear systems. However, because sensors, tests, filter tunings, etc. vary largely from one publication to another, it is not possible in many occasions to have a clear idea of the real benefits of the different methods in fair terms. This paper presents a theoretical analysis of the goodness of the EKF in loosely coupled data fusion architectures. The methodology presented can be applied to understand the limitations of different approaches for fusing multiple sensors in non-linear systems. Illustrations depict a real case with a sensor-set consisting of a GNSS, a gyro and the odometry of a road vehicle.
全球导航卫星系统(GNSS)为许多基于位置的服务和应用提供了巨大的价值。然而,由于GNSS在覆盖范围、连续性、精度和完整性方面的局限性,GNSS经常与一些额外的辅助传感器融合在一起。为了执行多个传感器的数据融合,有可能在该领域的文献中找到大量声称在计算方面具有更好的准确性,效率或鲁棒性的方法,而不是给出用于比较的参考方法。通常,这个参考是扩展卡尔曼滤波器(EKF),这是非线性系统中最常见的卡尔曼滤波器版本。但是,由于传感器、测试、滤波器调优等在不同的出版物之间差异很大,因此在许多场合不可能公平地清楚地了解不同方法的真正好处。本文从理论上分析了EKF在松散耦合数据融合体系结构中的优越性。所提出的方法可以应用于了解在非线性系统中融合多个传感器的不同方法的局限性。插图描绘了一个真实的情况下,传感器集组成的GNSS,陀螺仪和里程计的道路车辆。
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引用次数: 8
A novel adaptive support window based stereo matching algorithm for 3D reconstruction from 2D images 一种基于自适应支持窗的二维图像三维重建立体匹配算法
Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060092
Jargalsaikhan Iveel, S. David
Three dimensional scene reconstruction, sometimes referred as view synthesis, is a problem in the area of Stereo Vision, which is the most widely used method for gathering depth information from 2D scenes. Stereo vision finds many applications in automated systems such robotics, tracking object in 3D space and constructing a 3D spatial model of a scene. There are many human-machine control applications, such vision based remote control system which exploits stereo vision to control the machine in a touch-free environment. In this paper, we present a new stereo vision matching algorithm using an adaptive support window. In many area based algorithms, the selection and computation of the size and shape of the window is the most crucial factor for obtaining high quality disparity map. We developed an adaptive support window based stereo matching using similar color regions selected by the seed growing algorithm. The proposed approach is tested on Middlebury stereo images and results were promising.
三维场景重建,有时被称为视图合成,是立体视觉领域的一个问题,它是最广泛使用的从二维场景中收集深度信息的方法。立体视觉在自动化系统中有许多应用,如机器人、在3D空间中跟踪物体和构建场景的3D空间模型。有许多人机控制的应用,如基于视觉的远程控制系统,利用立体视觉在无触摸环境中控制机器。本文提出了一种新的基于自适应支持窗口的立体视觉匹配算法。在许多基于区域的算法中,窗口大小和形状的选择和计算是获得高质量视差图的关键因素。利用种子生长算法选择的相似颜色区域,开发了一种基于自适应支持窗口的立体匹配方法。该方法在Middlebury立体图像上进行了测试,结果令人满意。
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引用次数: 6
Efficient map based location service for VANETs 高效的地图定位服务为VANETs
Pub Date : 2011-10-27 DOI: 10.1109/ITST.2011.6060087
D. Ashok, M. Pai, J. Mouzna
One of the key aspects of any communication system is routing of packets. VANET is no exception and poses special challenges in routing techniques. Position based routing protocols are considered to be apt for vehicular networks [1] and to realize that a location service is being used. For a packet to be routed to a destination across the network, the destination's position is to be known in advance. In this paper a new location service paradigm is being proposed to get the destination car's position. An adaptive location update policy is being proposed to maintain up-to-date location information at the location server. The location service uses a density aware server selection policy which selects servers at high density regions of a city. A localized query answering strategy is used for replying to location queries where a server with latest location information replies for a query. The proposed solution is found to be an efficient model for providing location service and ensures a query success ratio of 90.10% at its peak and decreased localization error, at an average of 8m.
任何通信系统的一个关键方面是数据包的路由。VANET也不例外,在路由技术方面提出了特殊的挑战。基于位置的路由协议被认为适合于车辆网络[1],并实现正在使用的位置服务。对于要通过网络路由到目的地的数据包,需要提前知道目的地的位置。本文提出了一种新的定位服务范式来获取目标车辆的位置。提出了一种自适应位置更新策略,用于在位置服务器上维护最新的位置信息。位置服务使用密度感知服务器选择策略,该策略选择位于城市高密度区域的服务器。本地化查询应答策略用于应答位置查询,其中具有最新位置信息的服务器应答查询。结果表明,该解决方案是一种高效的定位服务提供模型,在峰值时查询成功率达到90.10%,定位误差平均在8m以内。
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引用次数: 23
期刊
2011 11th International Conference on ITS Telecommunications
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