Proceedings. The 7th International IEEE Conference on Intelligent Transportation Systems (IEEE Cat. No.04TH8749)最新文献

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A new method of railway passenger flow forecasting based on spatio-temporal data mining 基于时空数据挖掘的铁路客流预测新方法
Wei Xu, Yong Qin, Houkuan Huang
{"title":"A new method of railway passenger flow forecasting based on spatio-temporal data mining","authors":"Wei Xu, Yong Qin, Houkuan Huang","doi":"10.1109/ITSC.2004.1398932","DOIUrl":"https://doi.org/10.1109/ITSC.2004.1398932","url":null,"abstract":"By analyzing the limitation of current passenger flow forecasting approach, This work presents a new approach to forecast the railway passenger flow based on spatio-temporal data mining. The approach first forecasts the time sequence of the target object using statistical principles, then figures out the spatial influence of neighbor objects using a neural network, and finally combines the two forecasting results using linear regression. The method is used in the forecast of railway passenger flow during the spring festival period of 2004. Comparing with the existing approaches that do not consider the spatial influence, our approach has better forecast accuracy.","PeriodicalId":239269,"journal":{"name":"Proceedings. The 7th International IEEE Conference on Intelligent Transportation Systems (IEEE Cat. No.04TH8749)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121558820","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
A reliable road lane detector approach combining two vision-based algorithms 一种结合两种视觉算法的可靠道路车道检测方法
R. Labayrade, S. Leng, D. Aubert
{"title":"A reliable road lane detector approach combining two vision-based algorithms","authors":"R. Labayrade, S. Leng, D. Aubert","doi":"10.1109/ITSC.2004.1398888","DOIUrl":"https://doi.org/10.1109/ITSC.2004.1398888","url":null,"abstract":"We present a new approach for detecting road lane with reliability using vision-based techniques. The single used sensor is an on-board frontal monocular monochromic camera. The novelty is to introduce redundancy by using several (two in this paper) independent algorithms. By combining their outputs together, we obtain more reliable results as well as a confidence value about the reliability of the results. When the confidence value is low, an initialization of the algorithms is performed to avoid false detection. The first algorithm computes longitudinal-coherent results, whereas the second algorithm computes lateral-coherent results. First, each algorithm is presented and then the way in which their outputs are combined is described. We also discuss how the two algorithms interact together. Then, experiments in a real-time context underline the improvements provided by this approach and show that results are relevant.","PeriodicalId":239269,"journal":{"name":"Proceedings. The 7th International IEEE Conference on Intelligent Transportation Systems (IEEE Cat. No.04TH8749)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121723261","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: 19
Real-time multiple face detection of pedestrian using hybrid GA 基于混合遗传算法的行人实时多人脸检测
H. Suzuki, M. Minami
{"title":"Real-time multiple face detection of pedestrian using hybrid GA","authors":"H. Suzuki, M. Minami","doi":"10.1109/ITSC.2004.1398988","DOIUrl":"https://doi.org/10.1109/ITSC.2004.1398988","url":null,"abstract":"There have been many attempts to realize human-like visual function by image processing. Methods for recognition and tracking of the human face are expected to be applied in security systems and in the field of ITS (intelligent transportation systems). This study was performed to construct a detection system capable of recognizing multiple people's faces in real time. We employed a hybrid GA (genetic algorithm) based on selective attention, which is the human visual function used to reduce processing load, to search for the position of a face in input images. The hybrid GA used random searching as a rough, preliminary search of the area, then used an improved GA to carefully search the target possibilities. These methods were combined by grouping to allow simultaneous detection of multiple faces in input images in real time. We confirmed the effectiveness of our proposed detection system by experiments involving detection of multiple targets.","PeriodicalId":239269,"journal":{"name":"Proceedings. The 7th International IEEE Conference on Intelligent Transportation Systems (IEEE Cat. No.04TH8749)","volume":"69 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125070417","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: 3
Evaluation performance of the adaptive cell scheme in road to vehicle communications 自适应小区方案在路车通信中的性能评价
K. Nishino, T. Hasegawa
{"title":"Evaluation performance of the adaptive cell scheme in road to vehicle communications","authors":"K. Nishino, T. Hasegawa","doi":"10.1109/ITSC.2004.1399008","DOIUrl":"https://doi.org/10.1109/ITSC.2004.1399008","url":null,"abstract":"This paper describes an adaptive cell scheme (ACS) in road to vehicle communications. This scheme reduces the frequency of a handover caused by movement between communication cells with adapting the size of the sub-domain adapted to vehicles' density. However, the traffic load increases when the size of the sub-domain is enlarged. Therefore, vehicles' density parameters to use varying the size of the sub-domain are discussed. Consequently, effectiveness of the ACS is evaluated by simulation.","PeriodicalId":239269,"journal":{"name":"Proceedings. The 7th International IEEE Conference on Intelligent Transportation Systems (IEEE Cat. No.04TH8749)","volume":"219 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131745140","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
On the intermittence of routing paths in vehicle-formed mobile ad hoc networks on highways 高速公路车载移动自组网中路由路径的间歇性研究
S.Y. Wang
{"title":"On the intermittence of routing paths in vehicle-formed mobile ad hoc networks on highways","authors":"S.Y. Wang","doi":"10.1109/ITSC.2004.1399005","DOIUrl":"https://doi.org/10.1109/ITSC.2004.1399005","url":null,"abstract":"An information network built on top of vehicles using IVC (inter-vehicle communications) can be viewed as a type of mobile ad hoc networks (MANET). Due to the high mobility of vehicles, the topology of an IVC network can change rapidly and thus an established routing path can easily break. One reason for path breakage is that a vehicle moves out of the wireless transmission range of its previous or next vehicle on the path causing a wireless hop of the path to break. On highways, however, due to lane-changing and car-following among vehicles, such a broken hop may later become reconnected and cause the path to become reconnected as well. We use several vehicle mobility traces generated by a microscopic traffic simulator to answer the following question - how possible a broken path may later become reconnected if the routing protocol is willing to give it some time to recover before switching to another path. Our finding shows that the path-reconnection possibility is very tiny and it is not worth waiting for such an event to occur.","PeriodicalId":239269,"journal":{"name":"Proceedings. The 7th International IEEE Conference on Intelligent Transportation Systems (IEEE Cat. No.04TH8749)","volume":"2 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120864081","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: 23
Motion stream analysis based on perceptual feature partitioning and grouping 基于感知特征划分与分组的运动流分析
Q. Gao, Y. Zhang, A. Parslow
{"title":"Motion stream analysis based on perceptual feature partitioning and grouping","authors":"Q. Gao, Y. Zhang, A. Parslow","doi":"10.1109/ITSC.2004.1398964","DOIUrl":"https://doi.org/10.1109/ITSC.2004.1398964","url":null,"abstract":"We present a perceptual organization based on method for motion stream analysis. The computation model was developed based upon a perception principle: visual feature partitioning and grouping. In the method, perceptual edge features are extracted and classified into generic edge tokens (GETs) using edge tracking and partitioning on the fly. GETs are perceptually distinctive features of lines and curve segments. Various structures and patterns of GETs can be grouped in terms of the rules of perceptual organization laws. GETs are descriptive and therefore can be manipulated qualitatively. For each consecutive image pair, motion GETs (MGETs) are segmented by directly subtracting the GETs extracted in the first image from the same locations in the second image, in that no explicit GET pair matching is needed. The MGETs are then grouped into clusters based on selected rules and domain knowledge of the objects. The motion clusters are evaluated using the measure of motion persistence (over multi-frames) for eliminating unstable data, i.e. noises. Two result demonstrations include road mark following and vehicle tracking.","PeriodicalId":239269,"journal":{"name":"Proceedings. The 7th International IEEE Conference on Intelligent Transportation Systems (IEEE Cat. No.04TH8749)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129548624","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
Adaptive image processing and sensing technologies for detecting anomalous conditions near critical transportation infrastructure assets 用于检测关键交通基础设施资产附近异常情况的自适应图像处理和传感技术
M. Magee, M. Rigney
{"title":"Adaptive image processing and sensing technologies for detecting anomalous conditions near critical transportation infrastructure assets","authors":"M. Magee, M. Rigney","doi":"10.1109/ITSC.2004.1398915","DOIUrl":"https://doi.org/10.1109/ITSC.2004.1398915","url":null,"abstract":"This work presents a methodology for detecting anomalous conditions on transportation infrastructure assets and generating alarms to draw the attention of personnel monitoring them via various sensing technologies. The methodology developed, which consists of a four part process, is capable of detecting conditions that vary substantially from those that are normally observed. This four part process consists of the following steps: (1) an intensity characteristic model of the transportation asset is learned during a training phase. (2) During the foreground object segmentation phase, objects are segmented based on pixel characteristics that vary substantially from those embodied in the intensity characteristic model. (3) Segmented objects that match certain morphological, topological, and/or geometric constraints are flagged as being candidates for further (temporal) processing. (4) Segmented objects with unanticipated temporal persistence or geometric characteristics are then identified and brought to the attention of a human operator.","PeriodicalId":239269,"journal":{"name":"Proceedings. The 7th International IEEE Conference on Intelligent Transportation Systems (IEEE Cat. No.04TH8749)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132334348","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
Real-time detection of crossing pedestrians for traffic-adaptive signal control 交通自适应信号控制中交叉口行人的实时检测
V. Bhuvaneshwar, P. Mirchandani
{"title":"Real-time detection of crossing pedestrians for traffic-adaptive signal control","authors":"V. Bhuvaneshwar, P. Mirchandani","doi":"10.1109/ITSC.2004.1398916","DOIUrl":"https://doi.org/10.1109/ITSC.2004.1398916","url":null,"abstract":"We propose an approach to detect and count pedestrians at an intersection, in real-time, using a fixed camera. After identifying moving objects in sequential images via motion segmentation, median filtering and erosion/dilation operations are performed to suppress noise. Connected component extraction is then employed to extract and label the moving objects in the image. The binary foreground region of each component is projected onto the axis perpendicular to its major axis to obtain a vertical projection histogram from which shadows can be detected, extracted and suppressed. Information about the size and coordinates of each component is then utilized to compute the number of people in the scene.","PeriodicalId":239269,"journal":{"name":"Proceedings. The 7th International IEEE Conference on Intelligent Transportation Systems (IEEE Cat. No.04TH8749)","volume":"62 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132527068","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
Time delay compensation for networked control systems based on SMC 基于SMC的网络控制系统时延补偿
Qian Wang, J. Yi, Dongbin Zhao, Bing Wu
{"title":"Time delay compensation for networked control systems based on SMC","authors":"Qian Wang, J. Yi, Dongbin Zhao, Bing Wu","doi":"10.1109/ITSC.2004.1399010","DOIUrl":"https://doi.org/10.1109/ITSC.2004.1399010","url":null,"abstract":"The network-induced long delays are not only inevitable, but also usually unpredictable and stochastic, which degrade the performance of control systems designed without considering time delays and even destabilize the systems. A new sliding mode controller (SMC) based on the predicted vectors of the system states is proposed for time delay compensation. By the prediction of the sliding mode control scheme, the long time delays are compensated in time. Simulation results show the effectiveness of this compensation method.","PeriodicalId":239269,"journal":{"name":"Proceedings. The 7th International IEEE Conference on Intelligent Transportation Systems (IEEE Cat. No.04TH8749)","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114212078","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
An automatic inspection system for the hexagonal headed bolts detection in railway maintenance 一种铁路维修中六角头螺栓自动检测系统
P. Mazzeo, M. Nitti, E. Stella, N. Ancona, A. Distante
{"title":"An automatic inspection system for the hexagonal headed bolts detection in railway maintenance","authors":"P. Mazzeo, M. Nitti, E. Stella, N. Ancona, A. Distante","doi":"10.1109/ITSC.2004.1398936","DOIUrl":"https://doi.org/10.1109/ITSC.2004.1398936","url":null,"abstract":"Rail inspection is a very important task in railway maintenance for traffic safety and for preventing dangerous situations. Railway infrastructure monitoring is a particular application context in which the periodical inspection of rail rolling plane is required. Usually the inspection of the rail is operated manually. A trained human operator walks along the track, searching for visual anomalies. Actually, the described monitoring ways are not more acceptable for their slowness and for the lack of objectivity. In fact, the results are constrained to the ability of the observer to recognize critical situations. This paper presents a vision-based technique to detect, automatically, the presence or absence of the fastening bolts that fix the rails to the sleepers. The inspection system acquires images by a digital line scan camera installed under a train. The images are pre-processed by using wavelet transform with Haar and Daubechies approximation coefficients. We have used two pre-processing techniques in order to reduce the computational time and speed up the whole fastening bolt detecting process. These coefficients are supplied as input to two different neural networks, in this way the first neural network identify the fastening bolt candidates and the second neural network validates the recognition process of the bolt. The final detecting system has been applied to a long sequence of real images showing a high reliability, robustness and good performance in term of computational speed.","PeriodicalId":239269,"journal":{"name":"Proceedings. The 7th International IEEE Conference on Intelligent Transportation Systems (IEEE Cat. No.04TH8749)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116453391","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: 8
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