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Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

作者： Hee-Kyo Joeng Kwang-Keun Kim Sun-Chul Hwang Myoung-Ho Lee Department of Electrical Engineering Yonsei University Seoul South Korea

An algorithm is presented for P-wave detection in the ECG signal. The peak and valley points are obtained by using a significant point extraction algorithm with a nine-point derivative. Because P-wave duration is a changing tendency according to heart rate, the R peak is first searched and the R-R interval time calculated prior to the determination of the threshold value of P-wave duration, in order to adapt to the change of P-wave duration actively. The parameter values are determined for P-wave detection, and then the P peak, P onset, and P offset are detected by these parameters values. The results obtained from the proposed algorithm have a detection accuracy of more than 90%.< >

关键词： Electrocardiography Heart rate detection Heart rate Adaptive signal detection change detection algorithms Morphology Data mining Equations Engineering in medicine and biology Societies

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change-detection in image sequences (medical application)

Change-detection in image sequences (medical application)

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Annual Northeast Bioengineering Conference

作者： A. Makki A. El-Fishawy A. Abutaleb C. Hansen J. Siegel S. Kesler Departments of Electrical Engineering Temple University Philadelphia PA USA Department of Electrical and Computer Engineering Drexel University Philadelphia PA USA Temple University Philadelphia PA USA

Two algorithms for the detection of small changes between images in a noisy environment are described. The first is a nonlinear image processing procedure for reduction and/or suppression of background (clutter), and the enhancement of the small difference between two images. This procedure is based on the recently developed Pontryagin filter and concepts of adaptive noise cancelling and image-sequence analysis. The second procedure is linear and is based on a lattice filter structure. The performance is evaluated through computer simulations and real images.< >

关键词： Image sequences Medical services Biomedical equipment Noise cancellation change detection algorithms Working environment noise Image processing Adaptive filters Image analysis Lattices

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DCIATP-an iterative analog circuit test generation program for generating DC single pattern tests

DCIATP-an iterative analog circuit test generation program f...

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IEEE International Test Conference

作者： M.J. Marlett J.A. Abraham Computer Systems Group Coordinated Science Laboratory University of Illinois Urbana IL USA

An algorithm is proposed for automatic test input generation for nonlinear analog circuits and digital circuits with analog behavior under fault. The algorithm uses high-level reasoning with simple iteration to find inputs which will detect resistive shorts and opens that cause DC errors. A simple version of the algorithm, for the time-domain case, has been implemented. Current work includes incorporating the heuristics into the path-generating algorithm, creating tests for larger circuits, extending the fault model to a parameter change in branches other than resistors (e.g. a beta change in a transistor), creating sensitivity metrics for the frequency domain and developing a transient error solution.< >

关键词： Circuit testing Analog circuits Iterative algorithms Circuit faults change detection algorithms Automatic testing Digital circuits Time domain analysis Resistors Frequency domain analysis

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The Extension Of Weber Law For Edge detection Of Noisy Images

The Extension Of Weber Law For Edge Detection Of Noisy Image...

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IEEE International Symposium on Geoscience and Remote Sensing (IGARSS)

作者： K.M. Ibrahim Space and Astronomy Research Center Iraq

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A rule-based adaptive PID controller

A rule-based adaptive PID controller

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IEEE Conference on Decision and Control

作者： K.L. Anderson G.L. Blankenship L.G. Lebow Electrical Engineering Department and Systems Research Center University of Maryland College Park MD USA Techno-Sciences Inc. Greenbelt MD USA

The authors describe a functioning expert controller implemented with industrial programmable logic controller technology. In its present state the controller implements an adaptive PID (proportional, integral, and derivative) algorithm based on rule-based logical modules. The controller does not presume a model for the system. It detects several features of the current system response to a step input change and uses a pattern matching procedure to adjust the PID parameters to reshape the system output response.< >

关键词： Programmable control Adaptive control Three-term control Electrical equipment industry Industrial control PD control Pi control Proportional control change detection algorithms Computer vision

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Automatic speech recognition using acoustic sub-words and no time alignment

Automatic speech recognition using acoustic sub-words and no...

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International Conference on Acoustics, Speech, and Signal Processing (ICASSP)

作者： V.R. Algazi K.L. Brown Speech Research Lab Department of Electrical Engineering and Computer Science University of California Davis CA USA

The authors have developed a very successful new approach to automatic speech recognition which incorporates speech knowledge into a mathematical framework and does not require a computationally intensive time alignment/dynamic programming scheme. They transform the speech signal into the spectral domain, segment it into sub-word units and, in turn, perform an additional transformation in the spectral domain to capture the spectral structure within each sub-word unit. The system was shown to perform robustly in hand segmented whole word digit recognition in clean as well as noisy speech. They have now augmented the system with an automatic acoustic sub-word segmentation routine and tested the performance of this integrated system with the TI isolated word database and the confusable E set.< >

关键词： Automatic speech recognition Karhunen-Loeve transforms Speech analysis Feature extraction change detection algorithms Iterative algorithms Acoustic testing Automatic testing System testing Flowcharts

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Finding zero-crossings using the Laplacian of a LLMMSE filter for stationary random noise

Finding zero-crossings using the Laplacian of a LLMMSE filte...

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IEEE Southeastcon

作者： S. Sengupta S. Nandkumar P.M. Lynch Tulane University New Orleans LA USA

Edge detection in the presence of noise is a fundamental problem in computer vision. Its solution directly influences the solution of many higher-level vision problems. A method for edge detection in the presence of stationary, signal independent, randomly distributed additive noise is presented. A rotationally symmetric Laplacian of a locally linear minimum-mean-squared-error (LLMMSE) filter is used to obtain the zero-crossings in an image instead of the Marr-Hildreth operator. The effect of this filter is studied for images degraded by Gaussian white noise.< >

关键词： Laplace equations Filters Image edge detection Degradation Surface fitting Computer vision change detection algorithms Approximation algorithms Gaussian noise Detectors

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Displacement Estimation in Time Varying Image Sequences Using Maximum Likelihood Method+

Displacement Estimation in Time Varying Image Sequences Usin...

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IEEE International Conference on Systems, Man and Cybernetics

作者： T.Q. Thai D.F. Mix Sandia National Laboratories Albuquerque NM USA University of Arkansas Fayetteville AR USA

In this paper an algorithm of estimating the dispIacement parameters of moving objects in time-Varying sequences is presented. The Maximum likelihood (ML) method is used for the estimation procedure. It will be shown that by invoking the invariance property of the maximum likelihood method closed form solution which includes scale change rotation and translations can be obtained. Subpixel displacements which is a desirable feature for accurate registration call also be estimated. The Cramer-Rao lower bound of the estimates' variances are derived and used as a means to improve the performance of the algorithm, An iterative scheme is also proposed for large displacement estimation. Finally, several experimental results on both synthetic and Forward Looking Infrared Radar (FLIR) images will be shown.

关键词： Image sequences Maximum likelihood estimation Maximum likelihood detection Motion detection Motion estimation Layout Image motion analysis Closed-form solution change detection algorithms Iterative algorithms

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THE ASYMPTOTIC LOCAL APPROACH TO change detection AND MODEL VALIDATION

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IEEE TRANSACTIONS ON AUTOMATIC CONTROL 1987年第7期32卷 583-592页

作者： BENVENISTE, A BASSEVILLE, M MOUSTAKIDES, GV CNRS INST RECH INFORMAT & SYST ALEATOIRESRENNESFRANCE

We present a systematic approach for the design of change detection and model validation algorithms for dynamical systems. We show how to associate to any identification algorithm a change detection and a model validation procedure, which are optimal in some asymptotic sense. The foundations of our method go back to the asymptotic local approach in statistics, and our method generalizes this approach.

关键词： Signal processing algorithms change detection algorithms Testing Statistics Automatic control Adaptive algorithm Monitoring Error correction Algorithm design and analysis Heuristic algorithms

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SYSTEMATIC-APPROACH FOR CLASSIFICATION OF MODERN SURVEILLANCE RADAR SYSTEMS

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IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS 1987年第2期23卷 281-285页

作者： RAFAEL, IR GERTNER, I TECHNION ISRAEL INST TECHNOL DEPT ELECT ENGNIL-32000 HAIFAISRAEL

Inherent search volume is proposed as a tool for systematic comparison of modern phased-array surveillance radar systems. The advantage of the inherent search volume over the existing approaches based on single-scan and cumulative probability of detection is that the inherent search volume depends only on the unadjustable parameters of the radar. A comparison algorithm based on the inherent search volume criterion is presented.

关键词： Surveillance Radar cross section Radar detection Probability Doppler radar Radar antennas Radar signal processing change detection algorithms Signal processing algorithms Character generation

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