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2013 IEEE International Conference on Computational Intelligence and Virtual Environments for Measurement Systems and Applications (CIVEMSA)最新文献

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A fuzzy model relating vibrotactile signal characteristics to haptic sensory evaluations 振动触觉信号特征与触觉感官评价的模糊模型
Liviu-Cristian Duţu, G. Mauris, P. Bolon, Stéphanie Dabic, J. Tissot
Nowadays tactile surfaces are slowly replacing the mechanical interfaces of our electronic devices, and the actual trend is toward a quasi-total touch interaction. This transition has however one important side effect, i.e the lack of feedback from the device, which in certain situations can be crucial. In order to overcome this, it has been suggested that feedback has to be delivered to the finger through vibrations that should be both detectable and comfortable. This paper aims to define a perception model for the sensory evaluations of the vibrotactile signals using fuzzy set theory. First of all, the hypothesis that haptic perception is strongly related to physical characteristics of the signals was evaluated and confirmed with a 93% correlation rate, based on psychophysical studies of the tactile sense. Secondly, using the previous analysis as a knowledge base we have implemented a fuzzy inference system which forecasts the preference values for vibrotactile signals. The preliminary results show that for 15 out of 18 signals, the preference is correctly predicted within a reasonable uncertainty interval.
如今,触觉表面正在慢慢取代我们电子设备的机械界面,而实际的趋势是走向准全触摸交互。然而,这种转变有一个重要的副作用,即缺乏来自设备的反馈,这在某些情况下可能是至关重要的。为了克服这个问题,有人建议,必须通过既可检测又舒适的振动将反馈传递给手指。本文旨在利用模糊集理论建立一个振动触觉信号感官评价的感知模型。首先,基于触觉的心理物理研究,以93%的相关率评估并证实了触觉感知与信号的物理特征密切相关的假设。其次,在前人分析的基础上,我们实现了一个模糊推理系统来预测振动触觉信号的偏好值。初步结果表明,对18个信号中的15个,在合理的不确定区间内正确预测了偏好。
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引用次数: 7
Automatic ECG artifact removal in the real-time SEMG recording system 实时表面肌电信号记录系统中心电伪影的自动去除
Yong Hu, Jerry Kwok, J. Tse
The contaminated electrocardiography (ECG) is a big problem in the surface electromyography (SEMG) signal detection and analysis. The objective of the current study is to propose and validate an algorithm for the automated feature cognition and identification for eliminating ECG artifact from the raw SEMG signals. The utilization of Independent Component Analysis (ICA) method is to decompose the raw SEMG signals into individual independent source components. After that, some of the independent source components with the characteristics of ECG artifact were detected by the automated identification algorithm and thereafter eliminated. The sensitivity and specificity of the algorithm for distinguishing ECG source components from independent source components are 100% and 99% respectively. The automated identification algorithm exhibits the prominent performance of recognition for ECG artifact and can be considered reliable and effective.
心电图污染是肌表电信号检测与分析中的一大难题。本研究的目的是提出并验证一种从原始表面肌电信号中消除心电伪影的自动特征认知和识别算法。利用独立分量分析(ICA)方法将原始表面肌电信号分解成独立的源分量。然后,通过自动识别算法检测出一些具有心电伪影特征的独立源分量,然后剔除。该算法区分心电源分量和独立源分量的灵敏度和特异性分别为100%和99%。该自动识别算法对心电伪信号的识别性能突出,可以认为是可靠有效的。
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引用次数: 0
An infrared-based depth camera for gesture-based control of virtual environments 一种用于虚拟环境手势控制的红外深度相机
D. Ionescu, V. Suse, C. Gadea, B. Solomon, B. Ionescu, S. Islam
Gesture Control dominates presently the research on new human computer interfaces. The domain covers both the sensors to capture gestures and also the driver software which interprets the gesture mapping it onto a robust command. More recently, there is a trend to use depth-mapping camera as the 2D cameras fall short in assuring the conditions of real-time robustness of the whole system. As image processing is at the core of the detection, recognition, and tracking the gesture, depth mapping sensors have to provide a depth image insensitive to illumination conditions. Thus depth-mapping cameras work in a certain wavelength of the infrared (IR) spectrum. In this paper, a novel real-time depth-mapping principle for an IR camera is introduced. The new IR camera architecture comprises an illuminator module which is pulse-modulated via a monotonic function using a cycle driven feedback loop for the control of laser intensity, while the reflected infrared light is captured in “slices” of the space in which the object of interest is situated. A reconfigurable hardware architecture unit calculates the depth slices and combines them in a depth-map of the object to be further used in the detection, tracking, and recognition of the gesture made by the user. Images of real objects are reconstructed in 3D based on the data obtained by the space-slicing technique, and a corresponding image processing algorithm builds the 3D map of the object in real-time. As this paper will show through a series of experiments, the camera can be used in a variety of domains, including for gesture control of 3D objects in virtual environments.
手势控制是目前新型人机界面研究的主流。该领域既包括捕捉手势的传感器,也包括解释手势并将其映射到鲁棒命令的驱动软件。最近,由于2D摄像机在保证整个系统的实时鲁棒性条件方面存在不足,因此有使用深度映射相机的趋势。由于图像处理是手势检测、识别和跟踪的核心,因此深度映射传感器必须提供对光照条件不敏感的深度图像。因此,深度映射相机在特定波长的红外光谱中工作。本文介绍了一种新的红外相机实时深度映射原理。新的红外相机架构包括一个照明模块,该模块通过一个单调函数进行脉冲调制,使用周期驱动的反馈回路来控制激光强度,而反射的红外光被捕获在感兴趣的物体所在空间的“切片”中。可重新配置的硬件架构单元计算深度切片,并将它们组合在对象的深度图中,以进一步用于检测、跟踪和识别用户所做的手势。利用空间切片技术获取的数据对真实物体进行三维图像重构,并通过相应的图像处理算法实时构建物体的三维地图。正如本文将通过一系列实验展示的那样,该相机可以用于各种领域,包括虚拟环境中3D物体的手势控制。
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引用次数: 6
Ensemble learning of colorectal cancer survival rates 结直肠癌生存率的集成学习
C. Roadknight, U. Aickelin, J. Scholefield, L. Durrant
In this paper, we describe a dataset relating to cellular and physical conditions of patients who are operated upon to remove colorectal tumours. This data provides a unique insight into immunological status at the point of tumour removal, tumour classification and post-operative survival. We build on existing research on clustering and machine learning facets of this data to demonstrate a role for an ensemble approach to highlighting patients with clearer prognosis parameters. Results for survival prediction using 3 different approaches are shown for a subset of the data which is most difficult to model. The performance of each model individually is compared with subsets of the data where some agreement is reached for multiple models. Significant improvements in model accuracy on an unseen test set can be achieved for patients where agreement between models is achieved.
在本文中,我们描述了一个与手术切除结肠直肠肿瘤的患者的细胞和身体状况相关的数据集。该数据为肿瘤切除、肿瘤分类和术后生存的免疫状态提供了独特的见解。我们建立在现有的数据聚类和机器学习方面的研究基础上,以证明集成方法在突出具有更清晰预后参数的患者方面的作用。对于最难建模的数据子集,显示了使用3种不同方法的生存预测结果。将每个模型的性能单独与多个模型达到某种一致的数据子集进行比较。对于模型之间达成一致的患者,可以在未见的测试集上实现模型精度的显着改进。
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引用次数: 3
A virtual environment for the simulation of 3D wood strands in multiple view systems for the particle size measurements 在多视图系统中模拟三维木链的虚拟环境,用于粒度测量
R. D. Labati, A. Genovese, V. Piuri, F. Scotti
In this paper, we present a complete virtual environment for the computation of synthetic three-dimensional samples representing free falling wood strands.The proposed method permits to simulate acquisitions performed by real multiple view setups in which the stream of strands falling out of a conveyor belt is analyzed with image processing techniques in order to compute the particle size distribution. Unfortunately, experiments in real time applications are complex and expensive, and the ground true is almost impossible to measure in such conditions. The creation of a metric and fully virtual environment of falling wood strands represent a key feature in order to properly design the illuminotecnic and optical setups, optimize the image processing methods as well as the three- dimensional reconstruction techniques, using controlled and fully repeatable virtual image datasets.
在本文中,我们提出了一个完整的虚拟环境,用于计算代表自由下落的木股的合成三维样本。所提出的方法允许模拟由真实的多视图设置执行的采集,其中用图像处理技术分析从传送带中掉落的股流,以计算粒度分布。不幸的是,实时应用中的实验既复杂又昂贵,而且在这种条件下几乎不可能测量地面真实。为了正确设计照明技术和光学设置,优化图像处理方法以及三维重建技术,使用受控和完全可重复的虚拟图像数据集,创建一个度量和完全虚拟的木材链环境是一个关键特征。
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引用次数: 5
An empirical study based on a fuzzy logic system to assess the QoS/QoE correlation for layered video streaming 基于模糊逻辑系统评价分层视频流QoS/QoE相关性的实证研究
M. Alreshoodi, J. Woods
A model that can predict an end user satisfaction or QoE (Quality of Experience) directly from the network QoS (Quality of Service) is still illusive in the field of image processing and is completely absent in multi-layered video. This motivates the derivation of a meaningful QoS to QoE mapping function to allow one to be predicted in the absence of the other. This paper presents an affine fuzzy logic based system that can map the QoS to QoE and can be extended to layered video streaming. The proposed methodology employs a learning system which optimizes the coded layered video for best QoE. Four QoS parameters are chosen as the inputs of the designed model, while the output is the Peak Signal-to-Noise Ratio (PSNR). The designed membership functions and the fuzzy rules extracted from the input and the output enable the proposed model to identify and learn the video QoE.
直接从网络服务质量(QoS)预测最终用户满意度或QoE(体验质量)的模型在图像处理领域仍然是虚幻的,在多层视频中是完全不存在的。这激发了对有意义的QoS到QoE映射函数的推导,以允许在没有另一个的情况下预测其中一个。本文提出了一种基于仿射模糊逻辑的系统,该系统可以将QoS映射到QoE,并可以扩展到分层视频流。所提出的方法采用了一个学习系统,该系统优化编码分层视频以获得最佳QoE。选择4个QoS参数作为所设计模型的输入,输出为峰值信噪比(PSNR)。设计的隶属函数和从输入输出中提取的模糊规则使该模型能够识别和学习视频QoE。
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引用次数: 20
Development of a low cost dataglove based on arduino for virtual reality applications 基于arduino的低成本虚拟现实应用数据采集器的开发
Lucas Silva, R. Dantas, Andre L. H. Pantoja, Antonio Pereira
This article describes the first steps on the development of a low cost dataglove based on the Arduino Uno microprocessor. The glove is designed for use in virtual reality systems and is integrated into a suite of applications. This article also presents a set of preliminary results obtained with the glove and discuss about the use of the glove to control a video game application for rehabilitation of stroke patients.
本文介绍了开发基于Arduino Uno微处理器的低成本数据处理器的第一步。该手套专为虚拟现实系统而设计,并集成到一套应用程序中。本文还介绍了一组使用该手套获得的初步结果,并讨论了使用该手套控制脑卒中患者康复的视频游戏应用程序。
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引用次数: 13
A Bayesian-learning technique for automatic pre-emptive loads through I/O devices via the mouse pointer 通过鼠标指针通过I/O设备实现自动抢占式负载的贝叶斯学习技术
Channarth Jerome Vantin, D. Megherbi
In today's computing environment, it is well known that the computing bottleneck is rather at the I/O peripheral levels instead of at the level of CPU and memory. The access times to fetch data from an external device such as a CD-ROM, a network drive, or even the delay of dragging a mouse pointer to a desktop icon consumes seconds of time while CPU operations take nanoseconds. In this thesis, we show how our proposed Bayesian technique can anticipate certain memory intensive programs and how it can be used to preload its contents before the user selects the actual program. We evaluate the I/O peripheral of the mouse cursor and how to leverage historic mouse data to make these predictions. We show that using such Artificial Intelligence (AI) techniques results in a more productive computing environment relieving the user from waiting for a program to load.
在当今的计算环境中,众所周知,计算瓶颈是在I/O外设级别,而不是在CPU和内存级别。从外部设备(如CD-ROM、网络驱动器)获取数据的访问时间,甚至是将鼠标指针拖到桌面图标上的延迟,都需要几秒钟的时间,而CPU操作则需要几纳秒的时间。在本文中,我们展示了我们提出的贝叶斯技术如何预测某些内存密集型程序,以及如何在用户选择实际程序之前使用它来预加载其内容。我们将评估鼠标光标的I/O外设,以及如何利用历史鼠标数据进行这些预测。我们表明,使用这种人工智能(AI)技术可以产生更高效的计算环境,从而使用户不必等待程序加载。
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引用次数: 0
Machine fault detection during transient operation using measurement denoising 利用测量去噪技术进行机器暂态故障检测
Yu Zhang, C. Bingham, M. Gallimore, Zhijing Yang, Jun Chen
The paper reports and demonstrates a computationally efficient method for machine fault detection in industrial turbine systems. Empirical mode decomposition (EMD) and Savitzky-Golay smoothing filters are used for signal denoising, with a resulting noise index being developed. By comparing the noise index with a power index (also derived in the paper), obtained from the detection of transients using a spectral analysis of the rate-of-change of unit power, three operational conditions are identifiable viz. normal operation, transient operation and operation when subject to emerging machine faults. The accommodation of transient operational conditions of the unit, so as not to create excessive `false alerts', provides a valuable alternative to more traditional techniques, based on PCA for instance, that can only provide reliable information during steady-state operation. The efficacy of the proposed approaches is demonstrated through the use of experimental trials on sub-15MW gas turbines.
本文报道并演示了一种计算效率高的工业汽轮机系统故障检测方法。经验模态分解(EMD)和Savitzky-Golay平滑滤波器用于信号去噪,由此产生的噪声指数正在开发中。通过比较噪声指数和功率指数(也是本文推导的),通过对单位功率变化率的频谱分析来检测暂态,可以识别出三种运行状态,即正常运行、暂态运行和机器出现故障时的运行。适应机组的暂态运行条件,以避免产生过多的“错误警报”,为更传统的技术提供了一个有价值的替代方案,例如基于PCA的技术,只能在稳态运行期间提供可靠的信息。通过在低于15mw的燃气轮机上进行实验试验,证明了所提出方法的有效性。
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引用次数: 4
Monitoring experiments using mobile devices 使用移动设备监测实验
J. L. Muros-Cobos, J. A. Holgado-Terriza, M. Cabrerizo-Vílchez
Nowadays most of people have smartphones which can run complex application. Some kinds of experiments need several hours to finish. Using recent mobiles capabilities, anyone can monitor instruments and equipment efficiently from anywhere. Hence, alert services can prevent users from any incidence on supervised instruments and experiments. In this paper a new monitoring mechanism is proposed for the supervision of an experiment by improving the reception of messages in any case using mobile devices. Finally, a practice case of the implemented mechanism is presented for Android mobiles.
现在大多数人都有智能手机,可以运行复杂的应用程序。有些实验需要几个小时才能完成。利用最近的移动功能,任何人都可以从任何地方有效地监控仪器和设备。因此,警报服务可以防止用户对受监督的仪器和实验发生任何事故。本文提出了一种新的监测机制,通过改进在任何情况下使用移动设备的消息接收来监督实验。最后,给出了该实现机制在Android手机上的应用实例。
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引用次数: 1
期刊
2013 IEEE International Conference on Computational Intelligence and Virtual Environments for Measurement Systems and Applications (CIVEMSA)
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