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2014 IEEE REGION 10 SYMPOSIUM最新文献

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Using depth maps to find interesting regions 使用深度图来寻找有趣的区域
Pub Date : 2014-04-14 DOI: 10.1109/TENCONSPRING.2014.6862998
Michael Borck, R. Palmer, G. West, T. Tan
Automated recognition and analysis of objects in images from urban transport corridors are important for many applications including asset management, measurement, location, analysis and change detection. Vehicle-based mobile mapping systems capture co-registered imagery and 3D point cloud information over hundreds of kilometers of transport corridor. Methods for extracting information from these large datasets are labour intensive and automatic methods are desired. This paper uses a depth map to segment regions of interest in colour images. Quantitative tests were carried out on two datasets. Experiments show that the resulting regions are relatively coarse, but overall the method is effective, and has the benefit of easy implementation.
自动识别和分析城市交通走廊图像中的物体对于许多应用都很重要,包括资产管理、测量、定位、分析和变化检测。基于车辆的移动地图系统在数百公里的交通走廊上捕获共同注册的图像和3D点云信息。从这些大型数据集中提取信息的方法是劳动密集型的,需要自动方法。本文使用深度图对彩色图像中感兴趣的区域进行分割。对两个数据集进行了定量测试。实验表明,所得区域相对粗糙,但总体上是有效的,并且具有易于实现的优点。
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引用次数: 1
Challenges and recommendation of clinical alarm system in intensive care units from user perspective 重症监护病房临床报警系统的挑战与推荐
Pub Date : 2014-04-14 DOI: 10.1109/TENCONSPRING.2014.6863059
S. Thangavelu, E. Ifeachor, J. Edworthy, J. Yunus, K. Chinna
There are too many problems associated with clinical alarm system in Intensive Care Unit. This study was undertaken to identify and propose rectification to these problems to optimise alarm system performance. The objective of the study is to identify the problems associated with clinical alarm system in Intensive Care Units (ICU), determine the contributing factors and propose ways to improve clinical alarm. In conducting the study it would also be interesting to explore the difference in the way doctors and nurses respond towards alarm system problems. A survey was conducted with 161 clinicians, 137(85%) were registered nurses and medical assistants (MA) and 24(15%) were medical doctors from ICU. Prospective observation study was carried out for a total of 120hrs. Thereon interview sessions with focus group were conducted followed with task analysis to identify the root cause of alarm problems in ICU. In this survey, responses to triggered alarm show that there is no significant difference in the response to clinical alarm system by doctors and nurses. Findings show that 14% of the respondent ignored or switched off the alarm. Outcome of the survey and observation study show that too many alarms is the main problem identified by 78% (n=161, p<;0.001) of the respondent. The task analysis indicates this problem is due to lack of integration and harmonisation, improper limit setting, lack of physiological information, no prioritisation of alarms and lack of consideration of human factor in alarm design. Incorporation of these factors in the design can minimise the frequency of alarm triggered thereby improving the performance of the alarm system.
重症监护病房的临床报警系统存在很多问题。本研究的目的是确定并提出纠正这些问题的建议,以优化报警系统的性能。本研究旨在找出重症监护病房(ICU)临床报警系统存在的问题,确定其影响因素,并提出改善临床报警的方法。在进行这项研究时,探索医生和护士对警报系统问题的反应方式的差异也会很有趣。对161名临床医生进行调查,其中注册护士和医疗助理(MA) 137人(85%),ICU内科医生24人(15%)。前瞻性观察研究共进行120小时。在此基础上进行焦点小组访谈,然后进行任务分析,以确定ICU报警问题的根本原因。在本次调查中,对触发报警的反应表明,医生和护士对临床报警系统的反应没有显著差异。调查结果显示,14%的受访者忽略或关闭了警报。调查和观察研究结果显示,78% (n=161, p< 0.001)的受访者认为报警过多是主要问题。任务分析表明,这一问题是由于缺乏整合和协调,限制设置不当,缺乏生理信息,没有优先级报警和在报警设计中缺乏对人为因素的考虑。在设计中结合这些因素可以最大限度地减少触发报警的频率,从而提高报警系统的性能。
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引用次数: 3
Characterization of on-body communication channel for vertical and horizontal polarization of center fed dipole at GSM frequency GSM频率下中心馈偶极子垂直和水平极化的体上通信信道特性
Pub Date : 2014-04-14 DOI: 10.1109/TENCONSPRING.2014.6863049
M. I. Khattak, R. Edwards, M. Shafi
While designing a wearable antenna for on-body communications, particular importance is given to lessen the lossy effects of the human body on transmission coefficient. This paper presents experimental and simulation results for two different polarizations of center-fed dipole antenna on human body at mobile communication frequency. The isolated parameter is S21(dB). Early results suggest that vertical polarization of dipole gives better transmission coefficient than horizontal polarization.
在设计可穿戴式人体通信天线时,要特别注意降低人体对传输系数的损耗影响。本文给出了在移动通信频率下,中心馈电偶极子天线在人体上两种不同极化的实验和仿真结果。隔离参数为S21(dB)。早期结果表明,垂直极化的偶极子比水平极化的偶极子具有更好的透射系数。
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引用次数: 0
A new Wideband Digital Array Radar (WB-DAR) experiment system 一种新型宽带数字阵列雷达(WB-DAR)实验系统
Pub Date : 2014-04-14 DOI: 10.1109/TENCONSPRING.2014.6863073
Lu Qian, Xue-gang Wang
With the capability of multifunction and high resolution imaging and flexible configuration, nowadays Wideband Digital Array Radar (WB-DAR) is developing gradually from theoretical research to practical system. Hence it's essential to launch develop program to assess the performance and feasibility of practical system. This paper presents a new WB-DAR experiment system. The system architecture and processing procedure is introduced briefly, and some key problems about system design are discussed in detail. Then the wideband digital T/R module as the most important components of this system is analyzed.
宽带数字阵列雷达(WB-DAR)以其多功能、高分辨率成像和灵活配置的特点,正逐步从理论研究向实用化发展。因此,启动开发计划来评估实际系统的性能和可行性是必要的。本文提出了一种新的无线雷达实验系统。简要介绍了系统的结构和处理过程,并详细讨论了系统设计中的一些关键问题。然后对宽带数字收发模块作为系统的重要组成部分进行了分析。
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引用次数: 8
Lossless watermarking technique for copyright protection of high resolution images 高分辨率图像版权保护的无损水印技术
Pub Date : 2014-04-14 DOI: 10.1109/TENCONSPRING.2014.6863000
N. Gavini, Surekha Borra
With the revolution of E-commerce websites, there is a great need for development of copyright protection techniques, which are able to detect ownership from the Intellectual Property. In this paper, a novel watermarking method, is proposed as a solution for copyright protection of very high resolution images. Application of the concept of Visual Cryptography and Central Limit Theorem, on a Correlation Matrix obtained from the image to be protected is the key approach used in this paper, so as to satisfy the requirements. The proposed method have merits such as 100% imperceptibility and unrestricted watermark image size, without compromising robustness.
随着电子商务网站的革命,迫切需要发展能够从知识产权中识别所有权的版权保护技术。本文提出了一种新的高分辨率图像的版权保护水印方法。将视觉密码学的概念和中心极限定理应用于从待保护图像中得到的相关矩阵上是本文采用的关键方法,从而满足要求。该方法在不影响鲁棒性的前提下,具有100%的不可感知性和不受水印图像大小限制的优点。
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引用次数: 13
Maximum likelihood watermark detection in absolute domain using Weibull model 基于威布尔模型的绝对域最大似然水印检测
Pub Date : 2014-04-14 DOI: 10.1109/TENCONSPRING.2014.6863024
Luan Dong, Qin Yan, Meng Liu, Yangxu Pan
Maximum Likelihood (ML) detection scheme is regarded as one of key components of many blind image watermarking algorithms in various transform domains. In ML detection, a proper Probability Distribution Function (PDF) such as the Generalized Gaussian Distribution (GGD) is usually required to model the statistical characteristics of the transform coefficients of the watermarked images. However in some cases, the GGD is not the most suitable model due to its limitation in modeling the pulse-shape distribution. In this paper, we propose a novel ML detection scheme. By performing ML detection in the absolute domain, we utilize the Weibull distribution, a special case of the Generalized Gamma distribution, to model the absolute transform coefficients. The experimental results demonstrate that the proposed detection scheme outperforms the conventional ones in both DWT and CT domain for natural images. Furthermore it improves the watermark detection rates averagely by 75.03% for Computer Graphic (CG) images compared with the conventional algorithm.
在各种变换域中,极大似然检测方案是许多盲图像水印算法的关键组成部分之一。在机器学习检测中,通常需要一个合适的概率分布函数(PDF),如广义高斯分布(GGD)来模拟水印图像变换系数的统计特征。然而,在某些情况下,由于GGD在模拟脉冲形状分布方面的局限性,它并不是最合适的模型。本文提出了一种新的机器学习检测方案。通过在绝对域中执行ML检测,我们利用广义伽玛分布的一种特殊情况威布尔分布来建模绝对变换系数。实验结果表明,该方法在自然图像的DWT和CT检测领域均优于传统检测方法。与传统算法相比,该算法对CG图像的水印检测率平均提高了75.03%。
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引用次数: 4
A novel approach to predict the popularity of the video 预测视频受欢迎程度的新方法
Pub Date : 2014-04-14 DOI: 10.1109/TENCONSPRING.2014.6863101
A. Bhaskar, J. Gyani, G. Narsimha
Video classification is an emerging research area. Advertisement videos play a major role in improving targeted sales of a product. The popularity of the advertisement depends on the number of viewers attracted to that advertisement video in a short span of time. Popular advertisements have more impact on the sales of the product. In this paper, we propose a new measure called Video Differential Index(VDI) to analyze and classify advertisement videos to know whether that video attracts more number of viewers or not. By using VDI measure we can also predict the type of video i.e., action-oriented, theme or concept based without watching the content of the video. Our experimental results demonstrated that, action oriented videos have high Video Differential Index as compared to theme or concept based videos. The VDI can be directly related to the popularity of the video.
视频分类是一个新兴的研究领域。广告视频在提高产品的针对性销售方面发挥着重要作用。广告的受欢迎程度取决于该广告视频在短时间内吸引的观众数量。受欢迎的广告对产品的销售影响更大。本文提出了一种新的度量方法——视频差分指数(VDI)来对广告视频进行分析和分类,以判断该视频是否吸引了更多的观众。通过使用VDI测量,我们还可以在不看视频内容的情况下预测视频的类型,即以行动为导向,主题或概念为基础。实验结果表明,与基于主题或概念的视频相比,以动作为导向的视频具有较高的视频差异指数。VDI可以直接关系到视频的受欢迎程度。
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引用次数: 1
High resolution spectral micro-CT imaging of atherosclerotic plaque 动脉粥样硬化斑块的高分辨率光谱显微ct成像
Pub Date : 2014-04-14 DOI: 10.1109/TENCONSPRING.2014.6863099
J. Ronaldson, N. Anderson, A. Butler, R. Zainon, P. Butler, S. Gieseg, T. Janmale, N. J. Scott
Spectral micro-Computed Tomography (CT) yields valuable quantitative information about elemental and molecular composition of materials. It enables the identification of materials by decomposing the total attenuation of the material into the various physical contributions for each voxel. Spectral micro-CT equipped with energy-resolved photon counting detector has the ability to measure the spectrum of x-ray beams. It is known that the attenuation of x-ray photons is energy-dependent and each substance has a specific attenuation curve. Therefore, measurement of the specific attenuation responses can enable material differentiation. The goal of this study was to demonstrate the potential of the MARS-CT scanner for preclinical evaluation of biomarker particularly in ex vivo advanced atherosclerotic plaque. It was proposed that spectral CT has the potential to identify the presence of specific markers for vulnerable plaques: iron deposits and lipid core. Using spectroscopic methods developed with this system, it was possible to distinguish the presence of iron deposits and lipid core within ex vivo atherosclerotic plaques. Vulnerable plaques are unstable, prone to rupture and put the person at risk of cardiovascular events and strokes. This preclinical study is a precursor to the development of a clinical technique that will enable vulnerable atherosclerotic plaques to be identified in vivo prior to treatment or removal.
光谱显微计算机断层扫描(CT)提供有关材料元素和分子组成的有价值的定量信息。它通过将材料的总衰减分解为每个体素的各种物理贡献来识别材料。配备能量分辨光子计数探测器的光谱微型ct具有测量x射线光束光谱的能力。已知x射线光子的衰减与能量有关,每种物质都有特定的衰减曲线。因此,测量特定的衰减响应可以实现材料的区分。本研究的目的是证明MARS-CT扫描仪在生物标志物临床前评估方面的潜力,特别是在离体晚期动脉粥样硬化斑块中。有人提出,光谱CT有可能识别易损斑块的特定标记物的存在:铁沉积物和脂质核心。利用该系统开发的光谱方法,可以区分体外动脉粥样硬化斑块中铁沉积物和脂质核心的存在。易损斑块不稳定,容易破裂,使人有心血管事件和中风的风险。这项临床前研究是临床技术发展的先驱,该技术将使易损的动脉粥样硬化斑块在治疗或移除之前在体内被识别出来。
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引用次数: 0
Fault tolerant BeeHive routing in mobile ad-hoc multi-radio network 移动自组织多无线网络中的蜂窝容错路由
Pub Date : 2014-04-14 DOI: 10.1109/TENCONSPRING.2014.6863008
K. Kiran, P. D. Shenoy, K. Venugopal, L. Patnaik
In this paper, fault tolerance in a multi-radio network is discussed. Fault tolerance is achieved using the BeeHive routing algorithm. The paper discusses faults added to the system as random fluctuations in hardware radio operation. The multi-radio nodes are designed using WiMAX and WiFi Radios that work in conjunction using traffic splitting to transfer data across a multi-hop network. During the operation of this network random faults are introduced by turning off certain radios in nodes. The paper discusses fault tolerance as applied to multi radio nodes that use traffic splitting in the transmission of data. We also propose a method to handle random faults in hardware radios by using traffic splitting and combining it with the BeeHive routing algorithm.
本文讨论了多无线网络中的容错问题。采用BeeHive路由算法实现容错。本文讨论了硬件无线电运行中的随机波动给系统带来的故障。多无线节点采用WiMAX和WiFi无线电设计,它们协同工作,使用流量分割在多跳网络上传输数据。该网络在运行过程中,通过关闭某些节点的无线电来引入随机故障。本文讨论了在数据传输中采用业务分割的多无线电节点容错问题。我们还提出了一种将流量分割与BeeHive路由算法相结合的硬件无线电随机故障处理方法。
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引用次数: 6
Reactive power optimization oriented control using optimal reactive power supply for radial network 基于最优无功供电的径向电网无功优化定向控制
Pub Date : 2014-04-14 DOI: 10.1109/TENCONSPRING.2014.6863083
Zhang Yong-jun, Li Qin-hao, Chenxing Xu
The concept of optimal reactive power supply is introduced. The value of optimal reactive power supply is derived from a two buses model. An optimal reactive power control strategy called reactive power optimization oriented slack control (RPOOSC) is put forward. Furthermore, an optimal control method using optimal reactive power supply for radial network is proposed as an application of reactive power optimization oriented control (RPOOC). The proposed method uses reactive power load as control variable and reactive power supply as state variable. The method can effectively reduce active power loss of transmission lines, and it is easy to realize. A simulation is carried out to reflect the optimization effect of the method compared with another optimization method, which is widely acknowledged. And the results show that the proposed method is effective and practical.
介绍了最优无功电源的概念。根据双母线模型,推导出最优无功功率的取值。提出了一种最优无功控制策略——面向无功优化的松弛控制(rpooc)。在此基础上,提出了一种基于最优无功供电的径向网络最优控制方法,作为面向无功优化控制(RPOOC)的应用。该方法以无功负荷为控制变量,以无功供电为状态变量。该方法可有效降低输电线路有功损耗,且易于实现。通过仿真比较了该方法与另一种优化方法的优化效果,得到了广泛的认可。实验结果表明,该方法是有效的、实用的。
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引用次数: 3
期刊
2014 IEEE REGION 10 SYMPOSIUM
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