首页 > 最新文献

2015 IEEE 18th International Conference on Intelligent Transportation Systems最新文献

英文 中文
Color-Based Free-Space Segmentation Using Online Disparity-Supervised Learning 使用在线差分监督学习的基于颜色的自由空间分割
Willem P. Sanberg, Gijs Dubbelman, P. D. With
This work contributes to vision processing for Advanced Driver Assist Systems (ADAS) and intelligent vehicle applications. We propose a color-only stixel segmentation framework to segment traffic scenes into free, drivable space and obstacles, which has a reduced latency to improve the real-time processing capabilities. Our system learns color appearance models for free-space and obstacle classes in an online and self-supervised fashion. To this end, it applies a disparity-based segmentation, which can run in the background of the critical system path, either with a time delay of several frames or at a frame rate that is only a third of that of the color-based algorithm. In parallel, the most recent video frame is analyzed solely with these learned color appearance models, without an actual disparity estimate and the corresponding latency. This translates into a reduced response time from data acquisition to data analysis, which is a critical property for high-speed ADAS. Our evaluation on two publicly available datasets, one of which we introduce as part of this work, shows that the color-only analysis can achieve similar or even better results in difficult imaging conditions, compared to the disparity-only method. Our system improves the quality of the free-space analysis, while simultaneously lowering the latency and the computational load.
这项工作有助于高级驾驶辅助系统(ADAS)和智能车辆应用的视觉处理。我们提出了一种纯彩色像素分割框架,将交通场景分割为自由、可驾驶空间和障碍物,减少了延迟,提高了实时处理能力。我们的系统以在线和自我监督的方式学习自由空间和障碍类的颜色外观模型。为此,它应用了基于差异的分割,该分割可以在关键系统路径的后台运行,或者具有几帧的时间延迟,或者帧率仅为基于颜色的算法的三分之一。同时,最新的视频帧仅用这些学习到的颜色外观模型进行分析,没有实际的视差估计和相应的延迟。这意味着从数据采集到数据分析的响应时间缩短,这是高速ADAS的关键特性。我们对两个公开可用的数据集进行了评估,其中一个是我们作为本工作的一部分介绍的,结果表明,与仅限差异的方法相比,仅限颜色的分析可以在困难的成像条件下获得相似甚至更好的结果。我们的系统提高了自由空间分析的质量,同时降低了延迟和计算负荷。
{"title":"Color-Based Free-Space Segmentation Using Online Disparity-Supervised Learning","authors":"Willem P. Sanberg, Gijs Dubbelman, P. D. With","doi":"10.1109/ITSC.2015.152","DOIUrl":"https://doi.org/10.1109/ITSC.2015.152","url":null,"abstract":"This work contributes to vision processing for Advanced Driver Assist Systems (ADAS) and intelligent vehicle applications. We propose a color-only stixel segmentation framework to segment traffic scenes into free, drivable space and obstacles, which has a reduced latency to improve the real-time processing capabilities. Our system learns color appearance models for free-space and obstacle classes in an online and self-supervised fashion. To this end, it applies a disparity-based segmentation, which can run in the background of the critical system path, either with a time delay of several frames or at a frame rate that is only a third of that of the color-based algorithm. In parallel, the most recent video frame is analyzed solely with these learned color appearance models, without an actual disparity estimate and the corresponding latency. This translates into a reduced response time from data acquisition to data analysis, which is a critical property for high-speed ADAS. Our evaluation on two publicly available datasets, one of which we introduce as part of this work, shows that the color-only analysis can achieve similar or even better results in difficult imaging conditions, compared to the disparity-only method. Our system improves the quality of the free-space analysis, while simultaneously lowering the latency and the computational load.","PeriodicalId":124818,"journal":{"name":"2015 IEEE 18th International Conference on Intelligent Transportation Systems","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121969666","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: 17
Analysis and Evaluation of Intelligent Bus Rapid Transit Systems in Cyprus 塞浦路斯智能快速公交系统的分析与评价
George Papageorgiou, Athanasios Maimaris, P. Ioannou
The objective of this paper is to present the process of developing a traffic simulation model for evaluating a number of Bus Rapid Transit system components in a highly congested traffic network in Nicosia, Cyprus. The scenarios to be evaluated include the use of dedicated bus lanes and high occupancy vehicle lanes. The assessment is carried out via validated microscopic simulation models of the traffic network under study. As seen from the analysis of the results, a viable long term solution to enhancing the bus transport mode is drawn where significant improvements are achieved regarding a number of measures of effectiveness, such as travel time, delays and speed.
本文的目的是介绍在塞浦路斯尼科西亚高度拥挤的交通网络中,为评估若干快速公交系统组件而开发交通模拟模型的过程。需要评估的方案包括使用专用公交车道和高载客量车辆车道。该评价是通过所研究的交通网络的验证微观模拟模型进行的。从对结果的分析中可以看出,一个可行的长期解决方案是提高公共汽车运输模式,其中在许多有效性措施方面取得了重大改进,例如旅行时间,延误和速度。
{"title":"Analysis and Evaluation of Intelligent Bus Rapid Transit Systems in Cyprus","authors":"George Papageorgiou, Athanasios Maimaris, P. Ioannou","doi":"10.1109/ITSC.2015.24","DOIUrl":"https://doi.org/10.1109/ITSC.2015.24","url":null,"abstract":"The objective of this paper is to present the process of developing a traffic simulation model for evaluating a number of Bus Rapid Transit system components in a highly congested traffic network in Nicosia, Cyprus. The scenarios to be evaluated include the use of dedicated bus lanes and high occupancy vehicle lanes. The assessment is carried out via validated microscopic simulation models of the traffic network under study. As seen from the analysis of the results, a viable long term solution to enhancing the bus transport mode is drawn where significant improvements are achieved regarding a number of measures of effectiveness, such as travel time, delays and speed.","PeriodicalId":124818,"journal":{"name":"2015 IEEE 18th International Conference on Intelligent Transportation Systems","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116850601","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: 7
Inhomogeneous Model Predictive Control Horizon Discretization for an Urban Truck Energy Efficient Driving Application 非均匀模型预测控制水平离散化在城市卡车节能驾驶中的应用
Michael Henzler, M. Buchholz, K. Dietmayer
This paper presents a novel approach on Model Predictive Control (MPC) using an inhomogeneously discretized preview horizon for the application of urban energy efficient driving. One solution for model predictive energy efficient driving is a direct solution of the underlying speed profile optimization problem using Quadratic Programming (QP), which allows computationally efficient and robust results. Our inhomogeneous horizon discretization allows to have a finer discretization of the typically important near future and a wider discretization of the less decisive far range of an MPC, while keeping a long preview horizon and at the same time limit the number of supporting points, hence limit the problem dimension, computational complexity, and proportional execution time. In extensive simulations of a real-world urban driving scenario, we demonstrate a significantly improved control performance in terms of fuel consumption, trip time, or constraint violation for the same computational complexity.
针对城市节能驾驶的实际应用,提出了一种基于非均匀离散化的模型预测控制(MPC)方法。模型预测节能驾驶的一种解决方案是使用二次规划(QP)直接解决潜在的速度剖面优化问题,从而实现计算效率和鲁棒性。我们的非均匀水平离散化允许对通常重要的近期进行更精细的离散化,并对MPC的不太决定性的远范围进行更广泛的离散化,同时保持较长的预览水平,同时限制支撑点的数量,从而限制问题维度、计算复杂性和比例执行时间。在对真实城市驾驶场景的广泛模拟中,我们证明了在相同的计算复杂度下,在油耗、行程时间或约束违反方面的控制性能显著提高。
{"title":"Inhomogeneous Model Predictive Control Horizon Discretization for an Urban Truck Energy Efficient Driving Application","authors":"Michael Henzler, M. Buchholz, K. Dietmayer","doi":"10.1109/ITSC.2015.78","DOIUrl":"https://doi.org/10.1109/ITSC.2015.78","url":null,"abstract":"This paper presents a novel approach on Model Predictive Control (MPC) using an inhomogeneously discretized preview horizon for the application of urban energy efficient driving. One solution for model predictive energy efficient driving is a direct solution of the underlying speed profile optimization problem using Quadratic Programming (QP), which allows computationally efficient and robust results. Our inhomogeneous horizon discretization allows to have a finer discretization of the typically important near future and a wider discretization of the less decisive far range of an MPC, while keeping a long preview horizon and at the same time limit the number of supporting points, hence limit the problem dimension, computational complexity, and proportional execution time. In extensive simulations of a real-world urban driving scenario, we demonstrate a significantly improved control performance in terms of fuel consumption, trip time, or constraint violation for the same computational complexity.","PeriodicalId":124818,"journal":{"name":"2015 IEEE 18th International Conference on Intelligent Transportation Systems","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117096711","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
Smoothening for Efficient Solution of Model Predictive Control for Urban Traffic Networks Considering Endpoint Penalties 考虑端点惩罚的城市交通网络模型预测控制的平滑有效解
A. Jamshidnejad, H. Hellendoorn, Shu Lin, B. Schutter
Traffic congestion together with emissions has become a big problem in urban areas. Traffic-responsive control systems aim to make the best use of the existing road capacity. Here, we propose a model-predictive controller for urban traffic networks, where the goal of the control is to find a balanced trade-off between reduction of congestion and emissions. The cost function is defined as a weighted combination of the total time spent, TTS, (as a criterion for evaluating the congestion level), the total emissions, TE, and the expected values of the TTS and TE caused by the vehicles that remain in the network at the end of the prediction horizon until they leave the network. We propose a method for estimation of the expected time spent and emissions by the remaining vehicles, where our method is based on a K Shortest path algorithm. For the prediction model of the MPC-based controller, we use a macroscopic integrated flow-emission model that includes the macroscopic flow S-model and the microscopic emission model, VT-micro. Since the S-model includes non-smooth functions, it does not allow us to benefit from efficient gradient-based methods to solve the optimization problem of the MPC-based controller. Therefore, in this paper we also propose smoothing methods for the S-model.
交通拥堵和排放已经成为城市地区的一个大问题。交通响应控制系统旨在充分利用现有道路容量。在这里,我们提出了一个城市交通网络的模型预测控制器,其中控制的目标是在减少拥堵和排放之间找到一个平衡的权衡。成本函数定义为总花费时间TTS(作为评估拥堵程度的标准)、总排放量TTS以及在预测范围结束时留在网络中直至离开网络的车辆所造成的TTS和TE的期望值的加权组合。我们提出了一种估计剩余车辆的预期时间和排放量的方法,其中我们的方法基于K最短路径算法。对于基于mpc的控制器的预测模型,我们使用了一个宏观综合流动-发射模型,该模型包括宏观流动s模型和微观发射模型VT-micro。由于s模型包含非光滑函数,它不允许我们利用有效的基于梯度的方法来解决基于mpc的控制器的优化问题。因此,本文还提出了s模型的平滑方法。
{"title":"Smoothening for Efficient Solution of Model Predictive Control for Urban Traffic Networks Considering Endpoint Penalties","authors":"A. Jamshidnejad, H. Hellendoorn, Shu Lin, B. Schutter","doi":"10.1109/ITSC.2015.456","DOIUrl":"https://doi.org/10.1109/ITSC.2015.456","url":null,"abstract":"Traffic congestion together with emissions has become a big problem in urban areas. Traffic-responsive control systems aim to make the best use of the existing road capacity. Here, we propose a model-predictive controller for urban traffic networks, where the goal of the control is to find a balanced trade-off between reduction of congestion and emissions. The cost function is defined as a weighted combination of the total time spent, TTS, (as a criterion for evaluating the congestion level), the total emissions, TE, and the expected values of the TTS and TE caused by the vehicles that remain in the network at the end of the prediction horizon until they leave the network. We propose a method for estimation of the expected time spent and emissions by the remaining vehicles, where our method is based on a K Shortest path algorithm. For the prediction model of the MPC-based controller, we use a macroscopic integrated flow-emission model that includes the macroscopic flow S-model and the microscopic emission model, VT-micro. Since the S-model includes non-smooth functions, it does not allow us to benefit from efficient gradient-based methods to solve the optimization problem of the MPC-based controller. Therefore, in this paper we also propose smoothing methods for the S-model.","PeriodicalId":124818,"journal":{"name":"2015 IEEE 18th International Conference on Intelligent Transportation Systems","volume":"100 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120858595","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: 5
Robustness Evaluation and Improvement for Vision-Based Advanced Driver Assistance Systems 基于视觉的高级驾驶辅助系统鲁棒性评价与改进
Stefan Müller, Dennis Hospach, O. Bringmann, J. Gerlach, W. Rosenstiel
In this paper we propose a novel method of robustness evaluation and improvement. The required amount of on-road records used in the design and validation of vision-based advanced driver assistance systems and fully automated driving vehicles is reduced by the use of fitness landscaping. This is realized by guided application of simulated environmental conditions to real video data. To achieve a high test coverage of advanced driver assistance systems many different environmental conditions have to be tested. However, it is by far too time-consuming to build test sets of all environmental combinations by recording real video data. Our approach facilitates the generation of comparable test sets by using largely reduced amounts of real on-road records and subsequent application of computer-generated environmental variations. We demonstrate this method using virtual prototypes of an automotive traffic sign recognition system and a lane detection system. The robustness of these systems is evaluated and improved in a second step.
本文提出了一种新的鲁棒性评价和改进方法。在基于视觉的高级驾驶员辅助系统和全自动驾驶车辆的设计和验证中,使用健身景观可以减少所需的道路记录数量。这是通过将模拟环境条件引导应用于真实视频数据来实现的。为了实现高级驾驶员辅助系统的高测试覆盖率,必须测试许多不同的环境条件。然而,通过记录真实的视频数据来构建所有环境组合的测试集是非常耗时的。我们的方法通过使用大量减少的真实道路记录和随后应用计算机生成的环境变化,促进了可比测试集的生成。我们使用汽车交通标志识别系统和车道检测系统的虚拟原型来演示这种方法。在第二步中评估和改进这些系统的鲁棒性。
{"title":"Robustness Evaluation and Improvement for Vision-Based Advanced Driver Assistance Systems","authors":"Stefan Müller, Dennis Hospach, O. Bringmann, J. Gerlach, W. Rosenstiel","doi":"10.1109/ITSC.2015.427","DOIUrl":"https://doi.org/10.1109/ITSC.2015.427","url":null,"abstract":"In this paper we propose a novel method of robustness evaluation and improvement. The required amount of on-road records used in the design and validation of vision-based advanced driver assistance systems and fully automated driving vehicles is reduced by the use of fitness landscaping. This is realized by guided application of simulated environmental conditions to real video data. To achieve a high test coverage of advanced driver assistance systems many different environmental conditions have to be tested. However, it is by far too time-consuming to build test sets of all environmental combinations by recording real video data. Our approach facilitates the generation of comparable test sets by using largely reduced amounts of real on-road records and subsequent application of computer-generated environmental variations. We demonstrate this method using virtual prototypes of an automotive traffic sign recognition system and a lane detection system. The robustness of these systems is evaluated and improved in a second step.","PeriodicalId":124818,"journal":{"name":"2015 IEEE 18th International Conference on Intelligent Transportation Systems","volume":"610 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123946560","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: 10
Feedback Perimeter Control for Heterogeneous Urban Networks Using Adaptive Optimization 基于自适应优化的异构城市网络周长反馈控制
Anastasios Kouvelas, M. Saeedmanesh, N. Geroliminis
A control scheme for heterogeneous transportation networks is presented. The methodology is based on the concept of the Macroscopic Fundamental Diagram (MFD) integrated with an adaptive optimization technique. The heterogeneous transportation network is first partitioned into a number of regions with homogeneous traffic conditions and well-defined MFDs. A macroscopic MFD-based model is used to describe the traffic dynamics of the resulting multi-region transportation system. A multivariable proportional integral (PI) feedback regulator is implemented to control the nonlinear system in real-time. The control variables consist of the inter-transferring flows between neighbourhood regions and the actuators correspond to the traffic lights of these areas (e.g. boundaries between regions). The recently proposed Adaptive Fine-Tuning (AFT) algorithm is used to optimize the gain matrices as well as the vector with the set-points of the PI controller. AFT is an iterative adaptive algorithm that optimizes the values of the tuneable parameters of the controller (e.g. gains and set-points) based on measurements of a performance index (e.g. total delay) for different perturbations of the parameters. The overall control scheme is tested in simulation and different performance criteria are studied. The performance of a fixed-time policy is compared to the final controller that is obtained after the convergence of AFT.
提出了一种异构运输网络的控制方案。该方法基于宏观基本图(MFD)的概念与自适应优化技术相结合。首先将异构交通网络划分为具有均匀交通条件和明确定义的mfd的多个区域。采用基于宏观mfd的模型来描述由此产生的多区域交通系统的交通动力学。采用多变量比例积分(PI)反馈调节器对非线性系统进行实时控制。控制变量由相邻区域之间的相互传输流组成,执行器对应于这些区域的交通灯(例如区域之间的边界)。最近提出的自适应微调(AFT)算法用于优化增益矩阵以及具有PI控制器设定点的矢量。AFT是一种迭代自适应算法,它基于对参数的不同扰动的性能指数(例如总延迟)的测量来优化控制器的可调谐参数(例如增益和设定点)的值。对整个控制方案进行了仿真测试,并研究了不同的性能指标。将固定时间策略的性能与AFT收敛后得到的最终控制器进行了比较。
{"title":"Feedback Perimeter Control for Heterogeneous Urban Networks Using Adaptive Optimization","authors":"Anastasios Kouvelas, M. Saeedmanesh, N. Geroliminis","doi":"10.1109/ITSC.2015.148","DOIUrl":"https://doi.org/10.1109/ITSC.2015.148","url":null,"abstract":"A control scheme for heterogeneous transportation networks is presented. The methodology is based on the concept of the Macroscopic Fundamental Diagram (MFD) integrated with an adaptive optimization technique. The heterogeneous transportation network is first partitioned into a number of regions with homogeneous traffic conditions and well-defined MFDs. A macroscopic MFD-based model is used to describe the traffic dynamics of the resulting multi-region transportation system. A multivariable proportional integral (PI) feedback regulator is implemented to control the nonlinear system in real-time. The control variables consist of the inter-transferring flows between neighbourhood regions and the actuators correspond to the traffic lights of these areas (e.g. boundaries between regions). The recently proposed Adaptive Fine-Tuning (AFT) algorithm is used to optimize the gain matrices as well as the vector with the set-points of the PI controller. AFT is an iterative adaptive algorithm that optimizes the values of the tuneable parameters of the controller (e.g. gains and set-points) based on measurements of a performance index (e.g. total delay) for different perturbations of the parameters. The overall control scheme is tested in simulation and different performance criteria are studied. The performance of a fixed-time policy is compared to the final controller that is obtained after the convergence of AFT.","PeriodicalId":124818,"journal":{"name":"2015 IEEE 18th International Conference on Intelligent Transportation Systems","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125766861","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: 24
Generalized Path Corridor-based Local Path Planning for Nonholonomic Mobile Robot 基于广义路径走廊的非完整移动机器人局部路径规划
Qi Wang, C. S. Wieghardt, Yan Jiang, Jian-wei Gong, Bernardo Wagner
A new generalized path corridor-based local planner for a nonholonomic mobile robot is proposed to avoid dynamic obstacles while following the lead of a global path. Rather than applying the global path directly, the proposed local planner will transform the global path into a normative path. Then, a generalized path corridor (GPC) is constructed based on the normative path. GPC defines the maximum free space along the normative path for local path planning. This avoids the local planner searching the entire space but still provides enough flexibility to deal with the dynamic obstacles. Additionally, a new type of heuristic cost is also proposed, which is measured based on the distance from the current location to the goal along the normative path. The integration of the normative path-based heuristic makes the local path planning more goal-oriented and helps the robot to navigate through the GPC and reach the goal more effectively.
提出了一种新的基于广义路径走廊的非完整移动机器人局部规划方法,使其在全局路径引导下避开动态障碍物。而不是直接应用全局路径,建议的局部规划器将全局路径转换为规范路径。然后,在规范路径的基础上构造了广义路径廊道(GPC)。GPC定义沿规范路径的最大可用空间,用于局部路径规划。这避免了局部规划者搜索整个空间,但仍然提供了足够的灵活性来处理动态障碍。此外,还提出了一种新的启发式代价,该代价是根据当前位置沿规范路径到目标的距离来度量的。基于规范路径的启发式算法的融合使局部路径规划更具目标导向,有助于机器人更有效地在GPC中导航并到达目标。
{"title":"Generalized Path Corridor-based Local Path Planning for Nonholonomic Mobile Robot","authors":"Qi Wang, C. S. Wieghardt, Yan Jiang, Jian-wei Gong, Bernardo Wagner","doi":"10.1109/ITSC.2015.311","DOIUrl":"https://doi.org/10.1109/ITSC.2015.311","url":null,"abstract":"A new generalized path corridor-based local planner for a nonholonomic mobile robot is proposed to avoid dynamic obstacles while following the lead of a global path. Rather than applying the global path directly, the proposed local planner will transform the global path into a normative path. Then, a generalized path corridor (GPC) is constructed based on the normative path. GPC defines the maximum free space along the normative path for local path planning. This avoids the local planner searching the entire space but still provides enough flexibility to deal with the dynamic obstacles. Additionally, a new type of heuristic cost is also proposed, which is measured based on the distance from the current location to the goal along the normative path. The integration of the normative path-based heuristic makes the local path planning more goal-oriented and helps the robot to navigate through the GPC and reach the goal more effectively.","PeriodicalId":124818,"journal":{"name":"2015 IEEE 18th International Conference on Intelligent Transportation Systems","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124803860","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
VITAL: A Simulation-Based Assessment of New Traffic Light Controls 关键:基于模拟的新交通灯控制评估
J. Erdmann, R. Oertel, P. Wagner
This paper reports on a simulation-based test of two new single intersection control algorithms and the methods to be used to get the needed input data for the two new methods. It also demonstrates, that the new methods have the promise of improving the currently used conventional method by 15% -- 28% on average. Although the results so far are based on a microscopic simulation, efforts have been made to be as close as possible to reality. In a future step the two new methods will be tested in the field at a real intersection.
本文报道了两种新的单交叉口控制算法的仿真测试,以及获取两种新算法所需输入数据的方法。研究还表明,新方法有望将目前使用的传统方法平均提高15% - 28%。虽然到目前为止的结果是基于微观模拟,但已经做出了尽可能接近现实的努力。在未来的步骤中,这两种新方法将在一个真实的十字路口进行实地测试。
{"title":"VITAL: A Simulation-Based Assessment of New Traffic Light Controls","authors":"J. Erdmann, R. Oertel, P. Wagner","doi":"10.1109/ITSC.2015.12","DOIUrl":"https://doi.org/10.1109/ITSC.2015.12","url":null,"abstract":"This paper reports on a simulation-based test of two new single intersection control algorithms and the methods to be used to get the needed input data for the two new methods. It also demonstrates, that the new methods have the promise of improving the currently used conventional method by 15% -- 28% on average. Although the results so far are based on a microscopic simulation, efforts have been made to be as close as possible to reality. In a future step the two new methods will be tested in the field at a real intersection.","PeriodicalId":124818,"journal":{"name":"2015 IEEE 18th International Conference on Intelligent Transportation Systems","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128563822","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: 5
Traffic Congestion Analysis Visualisation Tool 交通拥堵分析可视化工具
N. Petrovska, A. Stevanovic
The rapid growth of urban population and numbers of private cars in this modern era, results in increasingly urgent transportation problem in cities throughout the world. Road traffic congestion is an omnipresent problem, which leads to delays, time loss, human stress, energy consumption, environmental pollution e.c.t. In order to decrease traffic congestion, there is a need for simulating and optimizing traffic control and improving traffic management. There are different ways for traffic congestion monitoring and analysis such as using video monitoring and surveillance systems, or static and dynamic sensors which allow traffic management in real time. There are also other methods using non real time analysis where traf?c congestion can be extracted from historical patterns of traf?c congestion. The historical patterns can be gained from the stored travel time and speed data. The goal of enhancing driver convenience is achieved by providing applications based on road traffic condition that mainly identifies congestion status. This paper presents a web application which uses live traffic congestion data from Google Maps traffic layer for real time congestion calculation. A technique utilized for estimating the level of congestion is image processing. The main objective is to provide an automated and yet interactive visualization tool for congestion analysis in real time. The aim is reducing the traffic congestion on roads which will lead to decrease in the number of accidents. It can provide important data which can help road traffic management. Thus, it is mainly dedicated to traffic managers, operators and analysts. Nevertheless it can be implemented also by road users. Unlike most sensor based applications, it makes quantified congestion data available even in regions with limited traffic data information.
在这个时代,城市人口和私家车数量的快速增长,导致世界各地城市的交通问题日益紧迫。道路交通拥堵是一个无处不在的问题,它会导致延误、时间损失、人员压力、能源消耗、环境污染等问题。为了减少交通拥堵,需要模拟和优化交通控制,改进交通管理。交通拥堵的监测和分析有不同的方法,例如使用视频监控系统,或使用静态和动态传感器,以便实时进行交通管理。还有其他方法使用非实时分析哪里的流量?C拥堵可以从历史交通模式中提取出来吗?c拥堵。历史模式可以从存储的旅行时间和速度数据中获得。通过提供主要识别拥堵状态的基于道路交通状况的应用程序来实现提高驾驶员便利性的目标。本文提出了一个利用Google Maps交通层的实时交通拥塞数据进行实时交通拥塞计算的web应用程序。用于估计拥塞程度的一种技术是图像处理。主要目标是为实时拥塞分析提供一个自动化的交互式可视化工具。目的是减少道路上的交通堵塞,从而减少事故的数量。它可以提供有助于道路交通管理的重要数据。因此,它主要面向交通管理人员、运营商和分析师。然而,它也可以由道路使用者实施。与大多数基于传感器的应用程序不同,即使在交通数据信息有限的地区,它也可以获得量化的拥堵数据。
{"title":"Traffic Congestion Analysis Visualisation Tool","authors":"N. Petrovska, A. Stevanovic","doi":"10.1109/ITSC.2015.243","DOIUrl":"https://doi.org/10.1109/ITSC.2015.243","url":null,"abstract":"The rapid growth of urban population and numbers of private cars in this modern era, results in increasingly urgent transportation problem in cities throughout the world. Road traffic congestion is an omnipresent problem, which leads to delays, time loss, human stress, energy consumption, environmental pollution e.c.t. In order to decrease traffic congestion, there is a need for simulating and optimizing traffic control and improving traffic management. There are different ways for traffic congestion monitoring and analysis such as using video monitoring and surveillance systems, or static and dynamic sensors which allow traffic management in real time. There are also other methods using non real time analysis where traf?c congestion can be extracted from historical patterns of traf?c congestion. The historical patterns can be gained from the stored travel time and speed data. The goal of enhancing driver convenience is achieved by providing applications based on road traffic condition that mainly identifies congestion status. This paper presents a web application which uses live traffic congestion data from Google Maps traffic layer for real time congestion calculation. A technique utilized for estimating the level of congestion is image processing. The main objective is to provide an automated and yet interactive visualization tool for congestion analysis in real time. The aim is reducing the traffic congestion on roads which will lead to decrease in the number of accidents. It can provide important data which can help road traffic management. Thus, it is mainly dedicated to traffic managers, operators and analysts. Nevertheless it can be implemented also by road users. Unlike most sensor based applications, it makes quantified congestion data available even in regions with limited traffic data information.","PeriodicalId":124818,"journal":{"name":"2015 IEEE 18th International Conference on Intelligent Transportation Systems","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129341482","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: 34
A Real-Time Applicable Dynamic Hand Gesture Recognition Framework 一个实时适用的动态手势识别框架
Thomas Kopinski, A. Gepperth, U. Handmann
We present a system for efficient dynamic hand gesture recognition based on a single time-of-flight sensor. As opposed to other approaches, we simply rely on depth data to interpret user movement with the hand in mid-air. We set up a large database to train multilayer perceptrons (MLPs) which are subsequently used for classification of static hand poses that define the targeted dynamic gestures. In order to remain robust against noise and to balance the low sensor resolution, PCA is used for data cropping and highly descriptive features, obtainable in real-time, are presented. Our simple yet efficient definition of a dynamic hand gesture shows how strong results are achievable in an automotive environment allowing for interesting and sophisticated applications to be realized.
提出了一种基于单一飞行时间传感器的高效动态手势识别系统。与其他方法相反,我们只是依靠深度数据来解释手在半空中的用户移动。我们建立了一个大型数据库来训练多层感知器(mlp),这些感知器随后用于定义目标动态手势的静态手部姿势的分类。为了保持对噪声的鲁棒性并平衡低传感器分辨率,PCA用于数据裁剪,并提供了实时可获得的高度描述性特征。我们对动态手势的简单而有效的定义显示了在汽车环境中如何实现强大的结果,从而实现有趣而复杂的应用程序。
{"title":"A Real-Time Applicable Dynamic Hand Gesture Recognition Framework","authors":"Thomas Kopinski, A. Gepperth, U. Handmann","doi":"10.1109/ITSC.2015.381","DOIUrl":"https://doi.org/10.1109/ITSC.2015.381","url":null,"abstract":"We present a system for efficient dynamic hand gesture recognition based on a single time-of-flight sensor. As opposed to other approaches, we simply rely on depth data to interpret user movement with the hand in mid-air. We set up a large database to train multilayer perceptrons (MLPs) which are subsequently used for classification of static hand poses that define the targeted dynamic gestures. In order to remain robust against noise and to balance the low sensor resolution, PCA is used for data cropping and highly descriptive features, obtainable in real-time, are presented. Our simple yet efficient definition of a dynamic hand gesture shows how strong results are achievable in an automotive environment allowing for interesting and sophisticated applications to be realized.","PeriodicalId":124818,"journal":{"name":"2015 IEEE 18th International Conference on Intelligent Transportation Systems","volume":"2014 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127433777","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: 4
期刊
2015 IEEE 18th International Conference on Intelligent Transportation Systems
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