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Instrumentation and Measurement, IEEE Transactions on

Issue 11 • Date Nov. 2011

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  • Table of contents

    Publication Year: 2011 , Page(s): C1 - 3497
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  • IEEE Transactions on Instrumentation and Measurement publication information

    Publication Year: 2011 , Page(s): C2
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  • Guest Editorial for Special Section on IEEE Haptic Audio Visual Environments and Games 2010

    Publication Year: 2011 , Page(s): 3498 - 3500
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  • Haptic Interaction for Mobile Assistive Robots

    Publication Year: 2011 , Page(s): 3501 - 3509
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (760 KB) |  | HTML iconHTML  

    This paper presents an assistive robotic system, for which the user can interact with a mobile robot using a haptic interface, for senior and disabled people. The system consists of a nonholonomic PeopleBot mobile robot and a Phantom Omni haptic interface. Several technical problems related to the system are addressed and solved. Specifically, the backstepping technique is used, and a new tracking algorithm is developed for the robot to follow the user on a 2-D space. An adaptive fuzzy logic-based windowing method is proposed to solve the velocity estimation problem in the controller. A simple haptic rendering algorithm is designed to generate the haptic feedback based on the position error. Experiments show that the user can guide the movement of the robot quite easily and smoothly using the haptic interface. View full abstract»

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  • A New 6-DOF Haptic Device for Teleoperation of 6-DOF Serial Robots

    Publication Year: 2011 , Page(s): 3510 - 3523
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1029 KB) |  | HTML iconHTML  

    A new 6-DOF parallel haptic device is developed and presented in this paper. The haptic device consists of two 3-DOF parallel structures connected with a steering handle. The design satisfies requirements of low inertia, quick motion, large orientation angles, and large applied torques. Kinematics for position and differential motion is analyzed for the 6-DOF haptic device. Static force relation between the user force and motor torque is also analyzed and implemented on the controller. The control system for the teleoperation of 6-DOF serial robot is developed. The closed loop impedance force control system is analyzed and realized on the digital controller. Tele-operation of a 6-DOF serial robot using this haptic device is demonstrated. Experiments show that dynamic forces caused by the haptic device are well compensated with the closed loop force control. View full abstract»

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  • Digital Music Performance for Mobile Devices Based on Magnetic Interaction

    Publication Year: 2011 , Page(s): 3524 - 3533
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (323 KB) |  | HTML iconHTML  

    Digital music performance requires a high degree of interaction with input controllers that can provide fast feedback on the user's action. One of the primary considerations of professional artists is a powerful and creative tool that minimizes the number of steps required for the speed-demanding processes. Nowadays, mobile devices have become popular digital instruments for musical performance. Most of the applications designed for mobile devices use touch screen, keypad, or accelerometer as interaction modalities. In this paper, we present a novel interface for musical performance that is based on a magnetic interaction between a user and a device. The proposed method constitutes a touchless interaction modality that is based on the mutual effect between the magnetic field surrounding a device and that of a properly shaped magnet. Extending the interaction space beyond the physical boundary of a device provides the user with higher degree of flexibility for musical performance which, in turn, can open doors to a wide spectrum of new functionalities in digital music performance and production. View full abstract»

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  • Human Perception-Based Data Reduction for Haptic Communication in Six-DoF Telepresence Systems

    Publication Year: 2011 , Page(s): 3534 - 3546
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2004 KB) |  | HTML iconHTML  

    In this paper, a human perception-based data reduction method is suggested to reduce the number of packets transmitted in 6-degrees-of-freedom (DoF) telehaptic systems; specifically in haptic-enabled telepresence. The algorithm relies on knowledge from human haptic perception in order to reduce the number of packets transmitted without compromising transparency. Several distance metrics are also discussed to best examine the acuity of human perception in detecting haptic distortion when data reduction is performed in 6-DoF settings. A validation of the proposed haptic data reduction technique is performed under normal network conditions as well as in the presence of network-induced time delay and packet loss. Statistical significance tests (using Friedman's nonparametric ANOVA, and Wilcoxon signed-rank tests) were carried out to determine the appropriate multivariate human haptic perceptual thresholds (force, torque, orientation, etc.) required to minimize the number of packets transmitted while preserving the immersiveness of the 6-DoF telehaptic environment. It was observed that the suggested algorithm can significantly reduce haptic data traffic with little or no influence on the quality of haptic-enabled telepresence interaction. View full abstract»

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  • Measurements of Multimodal Approach to Haptic Interaction in Second Life Interpersonal Communication System

    Publication Year: 2011 , Page(s): 3547 - 3558
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1563 KB) |  | HTML iconHTML  

    The sense of touch has much importance in technology-mediated human emotion communication and interaction. Many researchers around the world are aiming to leverage the sense of touch in the communication medium between multiuser 3-D virtual world and real environment. Driven by the motivation, we explored the possibilities of integrating haptic interactions with Linden Lab's multiuser online virtual world, Second Life. We enhanced the open source Second Life viewer client in order to facilitate the communications of emotional feedbacks such as human touch, encouraging pat, and comforting hug to the participating users through real-world haptic stimulation. These emotional feedbacks that are fundamental to physical and emotional development in turn can enhance the users interactive and immersive experiences with the virtual social communities in the Second Life. In this paper, we describe the development of a prototype that realizes the aforementioned virtual-real communication through a haptic-jacket system. Some of the potential applications of the proposed approach includes distant lover's communication, remote child caring, and stress recovery. View full abstract»

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  • Measuring Communication Delay for Dynamic Balancing Strategies of Distributed Virtual Simulations

    Publication Year: 2011 , Page(s): 3559 - 3569
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (516 KB) |  | HTML iconHTML  

    As an inherent characteristic of any distributed system, the execution and performance of distributed virtual simulations totally rely on underlay communication infrastructure and resources. The performance of such simulations is directly restricted by the communication latencies between interdependent simulation components. The high level architecture (HLA) is a framework designed with the objective of organizing these simulations through management services. However, the framework is unaware of the communication delays caused by the network distances between communicating simulation parts. These delays can result from nonplanned initial deployment or dynamic simulation changes, requiring constant load balancing. Due to the importance of balancing distributed simulations, many approaches have been designed. In order to provide a balancing system aware of the dynamic communication changes, a delay-based redistribution scheme has been designed. The scheme successfully arranges the load, but it lacks precision due to communication delay oscillations. Therefore, extensions are proposed to modify the balancing algorithm in order to avoid unnecessary, mistaken load rearrangements. In the experimental results, the delay-based scheme has been able to reduce the simulation execution time when compared with the distributed balancing scheme, and the proposed extension has been capable of increasing the precision of the balancing. View full abstract»

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  • A New Hybrid Soft Tissue Model for Visio-Haptic Simulation

    Publication Year: 2011 , Page(s): 3570 - 3581
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1401 KB) |  | HTML iconHTML  

    A new hybrid soft tissue model, which is mainly based on the mass-spring model (MSM) and the 3-D finite strain nonlinear anisotropic elasticity theory, is presented for visio-haptic simulations, such as surgery simulators. One significant difference from conventional MSMs is that the internal forces among mass nodes are derived within the framework of nonlinear continuum mechanics. As a result, the new hybrid model is much more realistic in the sense that it incorporates the typical biological properties and behaviors of living tissue such as nonlinearity, anisotropy, viscoelasticity, and incompressibility. From the implementation point of view, the proposed model can be regarded as a hybrid of finite-element and MSMs, which enables it to maintain largely the advantage of the MSM, such as a simple architecture, low memory usage, and fast computation. The new model is validated in several benchmark problems, and the results show very good agreement with real experimental data reported in the literature. An example simulating a human kidney is given to demonstrate the capabilities of the proposed model in describing the nonlinearity, anisotropy, viscoelasticity, and incompressibility of typical soft tissue. View full abstract»

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  • Design of a Tactile Instrument to Measure Human Roughness Perception in a Virtual Environment

    Publication Year: 2011 , Page(s): 3582 - 3591
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (771 KB) |  | HTML iconHTML  

    This paper presents the experimental results on the measurement of human texture perception in virtual environments. The experiment is conducted with a haptic tactile instrument that provides sensations of rough textures directly to the fingertip of the users. It consists of a brush and a DC motor. The brush rubs directly against the user's fingertip. Simulated texture is felt through an aperture on the tactile actuator where the users place their fingertip. The speed and direction of the brush are varied to control the roughness of the virtual surface and to determine the effect of either variable on perceived roughness. The actuator is designed to be attached to an existing force feedback device in order to create an interface that can provide force feedback and tactile feedback. The magnitudes of rough textures are measured through this device by comparing the virtual textures with real sandpapers of different grit sizes. Through human factor testing, it is found that the direction of rotation has negligible effects on roughness perception when the time gap between two consecutive stimuli is as large as 10 s. However, when the time gap is reduced to 0.5 s, the effects of direction become prominent. The just noticeable difference with respect to speed is found to decrease as the base speed of the brush increases. The results also show that although each subject's perception of roughness is biased using various sandpapers, the measured data is divided between two trends. One group of users perceives the roughness to increase with increasing speed, while the other group perceives the roughness to decrease. View full abstract»

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  • Real-Time Hand Gesture Detection and Recognition Using Bag-of-Features and Support Vector Machine Techniques

    Publication Year: 2011 , Page(s): 3592 - 3607
    Cited by:  Papers (26)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1351 KB) |  | HTML iconHTML  

    This paper presents a novel and real-time system for interaction with an application or video game via hand gestures. Our system includes detecting and tracking bare hand in cluttered background using skin detection and hand posture contour comparison algorithm after face subtraction, recognizing hand gestures via bag-of-features and multiclass support vector machine (SVM) and building a grammar that generates gesture commands to control an application. In the training stage, after extracting the keypoints for every training image using the scale invariance feature transform (SIFT), a vector quantization technique will map keypoints from every training image into a unified dimensional histogram vector (bag-of-words) after K-means clustering. This histogram is treated as an input vector for a multiclass SVM to build the training classifier. In the testing stage, for every frame captured from a webcam, the hand is detected using our algorithm, then, the keypoints are extracted for every small image that contains the detected hand gesture only and fed into the cluster model to map them into a bag-of-words vector, which is finally fed into the multiclass SVM training classifier to recognize the hand gesture. View full abstract»

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  • DFT-based Estimation of Damped Oscillation Parameters in Low-Frequency Mechanical Spectroscopy

    Publication Year: 2011 , Page(s): 3608 - 3618
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1795 KB) |  | HTML iconHTML  

    In this paper, we analyze and compare the properties of different well-known and also new nonparametric discrete Fourier transform (DFT)-based methods for resonant frequency and logarithmic decrement estimation in application to mechanical spectroscopy. We derive a new DFT interpolation algorithm for a signal analyzed with Rife-Vincent class-I windows and also propose new formulas that extend Bertocco and Yoshida methods. We study errors of the resonant frequency and logarithmic decrement estimation in realistic conditions that include measurement noise and a zero-point drift. We also investigate the systematic errors of the estimation methods of interest. A nonlinear least squares time-domain parametric signal fitting is used to determine the boundaries of statistical efficiency in all tests. View full abstract»

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  • Real-Time Estimation of Sensor Node's Position Using Particle Swarm Optimization With Log-Barrier Constraint

    Publication Year: 2011 , Page(s): 3619 - 3628
    Cited by:  Papers (13)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1106 KB) |  | HTML iconHTML  

    In this paper, a new approach is proposed to estimate the location of a sensor in a wireless sensor network. For the estimation, only a few anchor nodes with known locations and received signal strength (RSS) indicator (RSSI) are needed. It is well known that the RSS reduces with increasing distance between the transceivers following a nonlinear path loss model. Most published works determine these parameters offline. This often yields limited estimation accuracy due to high variance of RSSI measurements. To improve the estimation accuracy, the parameters are estimated together with the unknown node's location in real time in this paper. To optimize the results, a new particle swarm optimization with log-barrier approach is proposed. Both simulation and experimental results show that the proposed scheme performs well as compared with some existing schemes. View full abstract»

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  • Transceiver Inphase/Quadrature Imbalance, Ellipse Fitting, and the Universal Software Radio Peripheral

    Publication Year: 2011 , Page(s): 3629 - 3639
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (797 KB) |  | HTML iconHTML  

    In this paper, we introduce a method for inphase/quadrature imbalance parameter estimation based on ellipse fitting. The performance of the method is analytically derived. In particular, it is shown that the method exhibits a small bias (which can be negligible under some standard practical conditions) and a variance slightly above the Cramér-Rao bound. The method is then applied to measurements from a contemporary BiCMOS transceiver which is used on one of the most popular daughterboards of the universal software radio peripheral. In our measurements, the phase skew varies up to 5° with the baseband frequency, while the amplitude imbalance varies between 0 and 0.3 dB over carrier frequencies and across hardware units. The time variation, however, is only 0.004 dB in amplitude and 0.06 ° in phase. This indicates that the units could either be calibrated online when there is no transmission (in a two-antenna MIMO system, one antenna could transmit a calibration signal to the other), or they could be calibrated during production, in which case a table with different carrier and baseband frequencies would be needed. However, there is no need to estimate the parameters on every burst. View full abstract»

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  • Frequency and Power Components Estimation from Instantaneous Power Signal

    Publication Year: 2011 , Page(s): 3640 - 3649
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1377 KB) |  | HTML iconHTML  

    In this paper, the problem of the simultaneous estimation of frequency and power components is investigated. It is solved through a new recursive estimator capable of estimating the unknown model parameters during severe dynamic changes in the system. By this, a simple nonlinear parameter model for the instantaneous power, taking into account the fundamental components of voltage and current, is used as a starting point for the power components and frequency estimation. In the model, the system frequency is considered as an unknown model parameter, and it is simultaneously estimated with other unknown parameters. This resulted in an efficient numerical algorithm for the measurement of power components, which is not sensitive to variations of the system frequency. This is an important achievement, which improves the accuracy of the method during network transients. The new estimator has been improved by the strategy for tuning its forgetting factor according to the system dynamics, and it is tested through computer simulations and by using data records obtained under laboratory conditions. The algorithm was developed for a single-phase system, and the approach might be easily extended to multiphase systems. View full abstract»

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  • A Simple Data Transformation Technique for Inverse Scattering Applications in Waveguides

    Publication Year: 2011 , Page(s): 3650 - 3657
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (892 KB) |  | HTML iconHTML  

    A new method, which can be considered as a calibration technique to transform the measured raw S-parameters of a rectangular waveguide partially filled with a dielectric material into the desired reference planes, is presented. The method is based on the removal of errors arising from the multiple reflections and imperfections of the system elements such as adapters and connectors, through the T-parameter matrix representation of the system. The measured raw data are transformed into the terminal planes of the waveguide by simply calculating frequency-dependent complex coefficients. After this transformation, a quite satisfactory match is observed between the experimentally measured and numerically calculated S -parameters for different types of materials and configurations. The calibrated measured data are also used in the inverse problem to determine the dielectric permittivity of the materials, and the preliminary reconstruction results are very promising. View full abstract»

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  • On Variants of the Frequency Power Law for the Electromagnetic Characterization of Hydraulic Concrete

    Publication Year: 2011 , Page(s): 3658 - 3668
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1505 KB) |  | HTML iconHTML  

    The objective of this paper is threefold: First, dielectric permittivity measurements on concrete specimens are compared among the different variants of Jonscher's model. Each of these variants considers just a limited number of parameters (two or three), based on certain material-dependent and/or bandwidth-related simplifying assumptions. According to this setup, these variants affect the inherent “universality” of the model by imposing a tradeoff between representativeness and practicality. Such an effect becomes more pronounced for concrete mixtures with high moisture content. Next, we propose a computationally efficient two-step procedure for estimating the four model parameters; this procedure filters the linear parameters that contribute to model deviation from the frequency power law by applying the Kramers-Krönig relations. Only two parameters therefore need to be estimated numerically, whereas the filtered parameters can be estimated in closed form as the solution to a simple linear least-squares problem. All of these variants are applied to an array of concrete mixtures and then evaluated by their goodness of fit. The results obtained demonstrate that accounting for all model parameters via the proposed procedure yields the smallest fitting error, thus enhancing the data interpretation stage. Moreover, a parametric study has been carried out in order to correlate the dispersion parameter n present in each variant of Jonscher's model with the physical and hydric characteristics of the concrete mixtures. This procedure has made it possible to derive trends providing information on the conditioning state of the studied media. View full abstract»

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  • Thick-Film Ceramic Strain Sensors for Structural Health Monitoring

    Publication Year: 2011 , Page(s): 3669 - 3676
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1125 KB) |  | HTML iconHTML  

    Structural Health Monitoring represents one of the primary field applications for new sensor technologies. Different kinds of sensors to monitor stability anomalies of civil structures are deployed on different kinds of building materials. Observation of stability must be durable and reliable for the lifetime of a structure. This paper is part of a research to investigate the possibility of application of thick-film (TF) piezoresistive sensors on building materials for the scope of monitoring structure's stability and conditions of load. As a first approach toward this objective, TF piezoresistive sensors will be used like metal-foil strain gauges on two different building materials, namely brick (clay) and concrete. A boosted Wheatstone bridge interface circuitry will be proposed and simulated with a Saber simulator. Thick film ceramic sensors (TFCS) will be applied on red brick and concrete to investigate TF response proportionality and linearity when applied on these two kinds of building materials. View full abstract»

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  • Oversampling Technique for Obtaining Higher Order Derivative of Low-Frequency Signals

    Publication Year: 2011 , Page(s): 3677 - 3684
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (939 KB) |  | HTML iconHTML  

    In this paper, a framework for obtaining the higher order derivative of digital signals with an improved signal-to-quantization-noise ratio (SQNR) is developed. The framework consists of an oversampling analog-to-digital conversion unit with a dithering process and a higher order finite-impulse response (FIR) digital differentiator followed by a decimator. A simple and effective recursion is derived for designing the higher order FIR digital differentiator. In addition, the SQNR is analyzed. Computer simulations validate the proposed framework, the differentiator design method, and the results of the improved SQNR. View full abstract»

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  • Verification of Noise-Parameter Measurements and Uncertainties

    Publication Year: 2011 , Page(s): 3685 - 3693
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (694 KB) |  | HTML iconHTML  

    We propose and implement verification methods for measurements of the noise parameters of amplifiers and transistors. Because the verification rests on the comparison of different measurement results, it also serves as a test of the uncertainties. The verification process consists of first measuring separately both a passive two-port device and the amplifier or transistor of interest [the device under test (DUT)] and then measuring the tandem configuration of the passive device plus the DUT. The results of the measurements on the tandem configuration are compared to the results predicted based on the noise parameters and scattering parameters of the two individual components. In this paper, we describe the method, discuss the uncertainty analysis, and present measurement results demonstrating the application of the method using a mismatched transmission line as the passive device. We also present simulation results demonstrating the ability of the method to detect measurement errors. View full abstract»

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  • A Robust Solution to High-Accuracy Geolocation: Quadruple Integration of GPS, IMU, Pseudolite, and Terrestrial Laser Scanning

    Publication Year: 2011 , Page(s): 3694 - 3708
    Cited by:  Papers (14)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2223 KB) |  | HTML iconHTML  

    Reliable and accurate geolocation is essential for airborne and land-based remote sensing applications. The detection, discrimination, and remediation of unexploded ordnance (UXO) and other munitions and explosives of concern (MEC) using the currently available detection and geolocation technologies often yield unsatisfactory results, failing to detect all MEC present at a site or to discriminate between MEC and nonhazardous items. Thus, the goal of this paper is to design and demonstrate a high-accuracy geolocation methodology that will address centimeter-level relative accuracy requirements of a man-portable electromagnetic (EM) sensor system in open and impeded environments. The proposed system design is based on the tight quadruple integration of the Global Positioning System (GPS), the inertial measurement unit (IMU) system, the terrestrial radio-frequency (RF) system pseudolite (PL), and terrestrial laser scanning (TLS) to support high-accuracy geolocation for a noncontact EM mapping system in GPS-challenged environments. The key novel component of the proposed multisensor system is the integration of TLS that can provide centimeter-level positioning accuracy in a local frame and thus enables a GPS/IMU/PL-based navigation system to achieve both high absolute and relative positioning accuracy in GPS-impeded environments. This paper presents the concept design of the quadruple integration system, the algorithmic approach to data integration with a special emphasis on TLS integration with GPS/IMU/PL, and the performance assessment based on real data, where centimeter-level relative geolocation accuracy is demonstrated during the GPS signal blockage. View full abstract»

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  • A Novel Hierarchical Information Fusion Method for Three-Dimensional Upper Limb Motion Estimation

    Publication Year: 2011 , Page(s): 3709 - 3719
    Cited by:  Papers (11)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (851 KB) |  | HTML iconHTML  

    Motion capture provides the best interface to the understanding of trajectory planning and formations in the central nervous system, which has enormously benefited the research in interactive game and learning, animation, film special effects, health care, and navigation. The existing human motion capture techniques, which use structured multiple high-resolution cameras in a dedicated studio, are complicated and expensive. With the rapid development of microsensors on chip, a ubiquitous real-time low-cost human motion capture system that uses wearable microsensors becomes possible. Because of the agility in movement, upper limb motion estimation has been regarded as the most difficult problem in human motion capture. In this paper, we take the upper limb as our research subject and present a novel upper limb motion estimation algorithm by hierarchical fusion of sensor data and human skeleton constraints. Our method represents the orientations of upper limb segments in quaternion, which is computationally effective and can avoid the singularity problem. To address the nonlinear human body segment motion, a particle filter is proposed to fuse inertial and magnetic sensor data. To compensate for the drift, which is the most challenging issue in motion estimation using inertial sensors, we present a novel solution by modeling the geometrical constraint in elbow joint and fuse the constraint in the framework of particle filter to revise the sensor fusion results and improve the estimation accuracy. The experimental results have shown that the proposed algorithm can provide accurate results compared to the ground truth. View full abstract»

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  • Classification of Military Ground Vehicles Using Time Domain Harmonics' Amplitudes

    Publication Year: 2011 , Page(s): 3720 - 3731
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1116 KB) |  | HTML iconHTML  

    In the context of the United Nations peacekeeping operations, we developed an energy-efficient method for the detection and classification of military vehicles using a group of wireless sensors. The method is adequate for low-power unattended sensors which perform sensing, feature extraction, and classification in a standalone scenario. Harmonics' amplitudes approximating the harmonic signature of the time domain acoustic signal captured by wireless sensor nodes are estimated for vehicle discrimination. The computational complexity for the time domain features extracted from ground vehicles' acoustic signals is lower than their equivalent spectral features. Classification is performed using a multilayer feedforward neural network, where discrimination between vehicles depends on their acoustic signature irrespective of their speed or location. Evaluation of the time domain method, through processing of an acoustic data set for heavyweight and lightweight military ground vehicles with comparison to spectral features, shows that time domain harmonics' amplitudes are simpler to obtain and provide the reliability of the spectral features in both the detection and false alarm rate. View full abstract»

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  • IEEE Transactions on Instrumentation and Measurement information for authors

    Publication Year: 2011 , Page(s): 3732
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    Freely Available from IEEE

Aims & Scope

Papers are sought that address innovative solutions to the development and use of electrical and electronic instruments and equipment to measure, monitor and/or record physical phenomena for the purpose of advancing measurement science, methods, functionality and applications.

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