Pub Date : 2012-11-01DOI: 10.1109/ITST.2012.6425246
Chien-Ming Chou, Kun-Chan Lan, Ching-Fang Yang
Participatory sensing has been recently proposed as a replacement for traditional mobile sensing system. In this work, we adopt the concept of participatory sensing for mobile surveillance by involving a human into the loop of data collection. Furthermore, we introduce a virtual credit based mechanism to motivate the participants to collect data and share their bandwidth. We perform an analysis of different parameters which might affect the performance of such a system.
{"title":"Using virtual credits to provide incentives for vehicle communication","authors":"Chien-Ming Chou, Kun-Chan Lan, Ching-Fang Yang","doi":"10.1109/ITST.2012.6425246","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425246","url":null,"abstract":"Participatory sensing has been recently proposed as a replacement for traditional mobile sensing system. In this work, we adopt the concept of participatory sensing for mobile surveillance by involving a human into the loop of data collection. Furthermore, we introduce a virtual credit based mechanism to motivate the participants to collect data and share their bandwidth. We perform an analysis of different parameters which might affect the performance of such a system.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123300746","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}
Pub Date : 2012-11-01DOI: 10.1109/ITST.2012.6425292
A. Ghazal, Chengxiang Wang, H. Haas, M. Beach, R. Mesleh, D. Yuan, Xiaohu Ge, M. Chahine
In this paper, a non-stationary wideband geometry-based stochastic model (GBSM) is proposed for multiple-input multiple-output (MIMO) high-speed train (HST) channels. The proposed model employs multiple confocal ellipses model, where the received signal is a superposition of the line-of-sight (LoS) and single-bounced rays. Because of the time-varying feature of angles of arrival (AoAs), angles of departure (AoDs), and LoS angle, the proposed GBSM has the ability to investigate the non-stationarity of HST environment caused by the high speed movement of the receiver. From the proposed model, the local spatial cross-correlation function (CCF) and the local temporal autocorrelation (ACF) are derived for different taps. Numerical results and analysis show that the proposed channel model is capable of characterizing the time-variant HST wireless channel.
{"title":"A non-stationary geometry-based stochastic model for MIMO high-speed train channels","authors":"A. Ghazal, Chengxiang Wang, H. Haas, M. Beach, R. Mesleh, D. Yuan, Xiaohu Ge, M. Chahine","doi":"10.1109/ITST.2012.6425292","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425292","url":null,"abstract":"In this paper, a non-stationary wideband geometry-based stochastic model (GBSM) is proposed for multiple-input multiple-output (MIMO) high-speed train (HST) channels. The proposed model employs multiple confocal ellipses model, where the received signal is a superposition of the line-of-sight (LoS) and single-bounced rays. Because of the time-varying feature of angles of arrival (AoAs), angles of departure (AoDs), and LoS angle, the proposed GBSM has the ability to investigate the non-stationarity of HST environment caused by the high speed movement of the receiver. From the proposed model, the local spatial cross-correlation function (CCF) and the local temporal autocorrelation (ACF) are derived for different taps. Numerical results and analysis show that the proposed channel model is capable of characterizing the time-variant HST wireless channel.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114918551","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}
Pub Date : 2012-11-01DOI: 10.1109/ITST.2012.6425153
Yen-Chieh Huang, Chi Lo, Chia-Wen Lin, Yung-Chang Chen
In this paper, we propose the low complexity transcoding methods from H.264/AVC IPPP prediction structure to SVC hierarchical B prediction structure. The macroblock coding mode and motion vector information are extracted from H.264/AVC bitstreams and transcoded to the SVC bitstreams. A mode decision approach is proposed to reduce the candidate coding modes and a motion vector decision approach is proposed to compose the forward and backward motion vectors in hierarchical B prediction structure. In the experimental results, the proposed methods can achieve a significant improvement in computational complexity with low video quality degradation.
{"title":"Temporal transcoding from H.264/AVC to SVC with hierarchical bidirectional prediction","authors":"Yen-Chieh Huang, Chi Lo, Chia-Wen Lin, Yung-Chang Chen","doi":"10.1109/ITST.2012.6425153","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425153","url":null,"abstract":"In this paper, we propose the low complexity transcoding methods from H.264/AVC IPPP prediction structure to SVC hierarchical B prediction structure. The macroblock coding mode and motion vector information are extracted from H.264/AVC bitstreams and transcoded to the SVC bitstreams. A mode decision approach is proposed to reduce the candidate coding modes and a motion vector decision approach is proposed to compose the forward and backward motion vectors in hierarchical B prediction structure. In the experimental results, the proposed methods can achieve a significant improvement in computational complexity with low video quality degradation.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"317 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122319958","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}
Pub Date : 2012-11-01DOI: 10.1109/ITST.2012.6425155
S. Yeh, Chia-Fen Tsai, Chen-Fang Yu, T. Huang
Claustrophobia is certain type of anxiety disorder on closed space. Claustrophobia patient, under certain conditions, for example, elevator, railway carriage or passenger compartment, might be attacked by panic disorder, or panic disorder might occur in very high probability. Flood method is a traditional therapeutic method for anxiety disorder. It is similar to system sensitivity-reducing method, but different than it is that in flood method and in the very beginning, the strongest anxiety stimulus is given so that the anxiety of the patient can reach a peak. This is to train the tolerance from the patient on the anxiety event, hence, when the patient meets slighter anxiety event, the patient won't feels that anxious. This research focuses on traditional diagnosis method of claustrophobia. It will associate virtual reality technology and game technology to develop immersion virtual reality training task, meanwhile, it will investigate if in virtual reality and augmented reality situation, people's anxiety situation can be similarly triggered. Comparisons between virtual reality and augmented reality systems are made via measurements of heart rate variability, technology acceptance model and anxiety assessment.
{"title":"Compare virtual reality and augmented reality systems for claustrophobia from HRV","authors":"S. Yeh, Chia-Fen Tsai, Chen-Fang Yu, T. Huang","doi":"10.1109/ITST.2012.6425155","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425155","url":null,"abstract":"Claustrophobia is certain type of anxiety disorder on closed space. Claustrophobia patient, under certain conditions, for example, elevator, railway carriage or passenger compartment, might be attacked by panic disorder, or panic disorder might occur in very high probability. Flood method is a traditional therapeutic method for anxiety disorder. It is similar to system sensitivity-reducing method, but different than it is that in flood method and in the very beginning, the strongest anxiety stimulus is given so that the anxiety of the patient can reach a peak. This is to train the tolerance from the patient on the anxiety event, hence, when the patient meets slighter anxiety event, the patient won't feels that anxious. This research focuses on traditional diagnosis method of claustrophobia. It will associate virtual reality technology and game technology to develop immersion virtual reality training task, meanwhile, it will investigate if in virtual reality and augmented reality situation, people's anxiety situation can be similarly triggered. Comparisons between virtual reality and augmented reality systems are made via measurements of heart rate variability, technology acceptance model and anxiety assessment.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114188225","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}
Pub Date : 2012-11-01DOI: 10.1109/ITST.2012.6425254
Li-Sheng Chen, W. Chung, Ting-Li Liu, D. Gao, S. Kuo
Wireless multimedia applications attract tremendous research and commercial attentions in recent years. Since wireless transmission is inherently error-prone, errors may occur in the regions of visual interest. The user experience and perceived quality may be unsatisfactory due to the errors. In this paper, we propose a visual saliency-aware radio resource allocation (VSA) scheme for image transmission in single carrier frequency division multiple access (SC-FDMA) system, which provides better quality of visual perception in wireless environments. The VSA schemes are designed to protect regions of interest so that the quality of visually salient information can be enhanced. Simulation results show that our scheme achieves effective improvements of quality in the region of interest in the image.
{"title":"Visual saliency-aware radio resource allocation for image transmission in SC-FDMA systems","authors":"Li-Sheng Chen, W. Chung, Ting-Li Liu, D. Gao, S. Kuo","doi":"10.1109/ITST.2012.6425254","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425254","url":null,"abstract":"Wireless multimedia applications attract tremendous research and commercial attentions in recent years. Since wireless transmission is inherently error-prone, errors may occur in the regions of visual interest. The user experience and perceived quality may be unsatisfactory due to the errors. In this paper, we propose a visual saliency-aware radio resource allocation (VSA) scheme for image transmission in single carrier frequency division multiple access (SC-FDMA) system, which provides better quality of visual perception in wireless environments. The VSA schemes are designed to protect regions of interest so that the quality of visually salient information can be enhanced. Simulation results show that our scheme achieves effective improvements of quality in the region of interest in the image.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128411819","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}
Pub Date : 2012-11-01DOI: 10.1109/ITST.2012.6425218
Fu-Ping Wang, W. Chung, S. Kuo
A new efficient algorithm on H.264 compressed-domain is proposed for extracting moving objects. The block entropy feature from the compressed-domain video is proposed to handle the bitstream with variable quantization QP values. Each video block builds two background entropy models to reflect the different coding efficiency between INTER and INTRA block types. Through background subtraction, the foreground energy frame is built after a normalization process. The hysteresis thresholding, where the thresholds can be easily obtained by an efficient unsupervised approach, is adopted with slightly modification to overcome the over-segmentation in extracting moving objects. At the final stage, morphological filters and connected components labeling(CCL) are applied to extract the list of moving objects. In our experiments, the proposed approach is able to operate faster than real time and the accurate object extraction can be achieved for huge H.264 surveillance videos.
{"title":"An efficient approach to extract moving objects by the H.264 compressed-domain features","authors":"Fu-Ping Wang, W. Chung, S. Kuo","doi":"10.1109/ITST.2012.6425218","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425218","url":null,"abstract":"A new efficient algorithm on H.264 compressed-domain is proposed for extracting moving objects. The block entropy feature from the compressed-domain video is proposed to handle the bitstream with variable quantization QP values. Each video block builds two background entropy models to reflect the different coding efficiency between INTER and INTRA block types. Through background subtraction, the foreground energy frame is built after a normalization process. The hysteresis thresholding, where the thresholds can be easily obtained by an efficient unsupervised approach, is adopted with slightly modification to overcome the over-segmentation in extracting moving objects. At the final stage, morphological filters and connected components labeling(CCL) are applied to extract the list of moving objects. In our experiments, the proposed approach is able to operate faster than real time and the accurate object extraction can be achieved for huge H.264 surveillance videos.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114845677","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}
Pub Date : 2012-11-01DOI: 10.1109/ITST.2012.6425304
Yi-Hung Lin, Chih-Feng Wu, M. Shiue, Chorng-Kuang Wang
In this paper, both the I/Q imbalance compensation and the channel equalization algorithm are proposed for space-time-block-code (STBC) MISO-OFDM systems. The I/Q imbalance compensation scheme is composed of self-calibration and tracking processes. The self-calibration process is further divided into two stages, symmetric- and anti-symmetric-tone, employed to extract the gain and the phase mismatches of transmitter (Tx) and receiver (Rx) I/Q imbalance for end-user in system power-on. According to the results of self-calibration process, both pre-and post-compensation block is presented to eliminate the Tx and Rx I/Q imbalances of end-user, respectively. In addition, the remote Tx I/Q imbalance compensation can be merged into the channel equalization process, based on MMSE criterion, on each subchannel.
{"title":"I/Q imbalance compensation and channel equalization algorithm for MISO-OFDM systems","authors":"Yi-Hung Lin, Chih-Feng Wu, M. Shiue, Chorng-Kuang Wang","doi":"10.1109/ITST.2012.6425304","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425304","url":null,"abstract":"In this paper, both the I/Q imbalance compensation and the channel equalization algorithm are proposed for space-time-block-code (STBC) MISO-OFDM systems. The I/Q imbalance compensation scheme is composed of self-calibration and tracking processes. The self-calibration process is further divided into two stages, symmetric- and anti-symmetric-tone, employed to extract the gain and the phase mismatches of transmitter (Tx) and receiver (Rx) I/Q imbalance for end-user in system power-on. According to the results of self-calibration process, both pre-and post-compensation block is presented to eliminate the Tx and Rx I/Q imbalances of end-user, respectively. In addition, the remote Tx I/Q imbalance compensation can be merged into the channel equalization process, based on MMSE criterion, on each subchannel.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126003349","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}
Pub Date : 2012-11-01DOI: 10.1109/ITST.2012.6425290
Cheng-Wei Fan, Ke-Chian Su, Hei-Min Wu, Wei-Lin Chang, Yao-Hsin Chou
In recent years, vehicle safety application has played a more important role in Vehicle ad-hoc network (VANET). Multi-hop broadcast method is widely used in these applications to propagate emergent messages to surrounding vehicles. However, it will lead to higher packet loss rate and transmission latency while massive emergent packets make data collision occurs frequently. This paper proposes a position base broadcast module, named Broadcast Control Unit (BCUnit), in order to reduce the re-broadcast nodes and minimize emergent message conflict. This module can be easily implemented to WAVE/DSRC devices without any additional transmission overhead and explicit coordination among vehicles. The simulation results show significant progress in multi-hop delay.
近年来，车辆安全应用在车辆自组织网络(VANET)中发挥了越来越重要的作用。在这些应用中，多跳广播方法被广泛用于向周围车辆传播紧急消息。但是，大量的突发报文会导致数据碰撞频繁发生，导致丢包率和传输延迟增加。为了减少重广播节点，最大限度地减少突发消息冲突，本文提出了一种基于位置的广播模块BCUnit (broadcast Control Unit)。该模块可以很容易地实现到WAVE/DSRC设备，无需任何额外的传输开销和车辆之间的明确协调。仿真结果表明，该方法在多跳时延方面取得了显著进展。
{"title":"An effective multi-hop broadcast control mechanism for emergency alert message in VANET","authors":"Cheng-Wei Fan, Ke-Chian Su, Hei-Min Wu, Wei-Lin Chang, Yao-Hsin Chou","doi":"10.1109/ITST.2012.6425290","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425290","url":null,"abstract":"In recent years, vehicle safety application has played a more important role in Vehicle ad-hoc network (VANET). Multi-hop broadcast method is widely used in these applications to propagate emergent messages to surrounding vehicles. However, it will lead to higher packet loss rate and transmission latency while massive emergent packets make data collision occurs frequently. This paper proposes a position base broadcast module, named Broadcast Control Unit (BCUnit), in order to reduce the re-broadcast nodes and minimize emergent message conflict. This module can be easily implemented to WAVE/DSRC devices without any additional transmission overhead and explicit coordination among vehicles. The simulation results show significant progress in multi-hop delay.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130801796","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}
Pub Date : 2012-11-01DOI: 10.1109/ITST.2012.6425203
M. Fiorini, Shwu-Jing Chang
Earth surface is covered for more than 2/3 by water with a spatial distribution of land to oceans and seas of about 1 to 1.5 in the Northern Hemisphere and 1 to 4 in the Southern Hemisphere. However the inhomogeneous spatial distribution of oceans have fascinated climatologist from a while this may not justify the nowadays rising for shrinking in oceans and seas. The paper report real data vessel traffic analysis along Taiwan coastline with the proposes to identify vessels behavior patterns, highlighting conflicting routes and setting the basis for a future Maritime Spatial Planning in the area of interest.
{"title":"Vessel route analysis by in situ measurements A pre-requisite for Maritime Spatial Planning","authors":"M. Fiorini, Shwu-Jing Chang","doi":"10.1109/ITST.2012.6425203","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425203","url":null,"abstract":"Earth surface is covered for more than 2/3 by water with a spatial distribution of land to oceans and seas of about 1 to 1.5 in the Northern Hemisphere and 1 to 4 in the Southern Hemisphere. However the inhomogeneous spatial distribution of oceans have fascinated climatologist from a while this may not justify the nowadays rising for shrinking in oceans and seas. The paper report real data vessel traffic analysis along Taiwan coastline with the proposes to identify vessels behavior patterns, highlighting conflicting routes and setting the basis for a future Maritime Spatial Planning in the area of interest.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133528839","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}
Pub Date : 2012-11-01DOI: 10.1109/ITST.2012.6425221
Chun-Hao Huang, Shwu-Jing Chang
Onboard integration of maritime safety information (MSI) with navigation display has been identified as a high priority user need in almost all e-Navigation survey. As a preliminary solution to such user need, a software module is developed in this work. MSI message files received via the onboard receiver are parsed to extract or infer their geospatial extent and time validity from free text, then integrated with the navigation display by correlating with own ship's navigation sensor data and route plan.
{"title":"Onboard integration of maritime safety information for navigation display and route safety","authors":"Chun-Hao Huang, Shwu-Jing Chang","doi":"10.1109/ITST.2012.6425221","DOIUrl":"https://doi.org/10.1109/ITST.2012.6425221","url":null,"abstract":"Onboard integration of maritime safety information (MSI) with navigation display has been identified as a high priority user need in almost all e-Navigation survey. As a preliminary solution to such user need, a software module is developed in this work. MSI message files received via the onboard receiver are parsed to extract or infer their geospatial extent and time validity from free text, then integrated with the navigation display by correlating with own ship's navigation sensor data and route plan.","PeriodicalId":143706,"journal":{"name":"2012 12th International Conference on ITS Telecommunications","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115186834","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}
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