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检索条件"任意字段=Conference on Advanced Signal Processing Algorithms, Architectures, and Implementations X"

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Real time correlation processing of television communication channel video data

Real time correlation processing of television communication...

引用

conference on advanced signal processing algorithms, architectures, and implementations xI

作者： Larkin, A Volkov, L Moscow Engn Phys Inst Coherent Photon Ctr Moscow 115409 Russia

ISBN: (纸本)0819441880

Electron-optical image converters (EOIC) have been known to be useful in recording and investigating highspeed processes, nuclear physics experiments, automatic environmental control, medicine etc. In this paper the cathode ray tubes with the cathodoluminescent screen having a sufficiently high level of the radiation temporal coherence (particularly on the basis of rare-earth phosphors) are proposed to be utilised as devices for the dynamic data input into the holographic correlator for realisation of TV signal recognition in real time. This approach allows combining both the radiation source and the spatial light modulator functions in one compact device.

关键词： Image processing Holography CRTs Optical correlators Data communications Temporal coherence Televisions Data processing Video Video processing

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Proceedings of SPIE - advanced signal processing: algorithms, architectures, and implementations VII

Proceedings of SPIE - Advanced signal processing: Algorithms...

引用

advanced signal processing: algorithms, architectures and implementations VII

The proceeding contains 53 papers from the conference of SPIE advanced VIII signal processing: algorithms, architectures, and implementations. The topics:include pattern recognition under translation and scale changes, instanteous frequency of a propagating pulse;data-driven time-frequency and time-scale detectors;time-varying frequencies of a signal;circulant preconditioners from B-splines;extensions to total variation denoising and Jacobi method for signal subspace computation.

关键词： signal processing

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Random array processing for micromachined sensor network

Random array processing for micromachined sensor network

引用

conference on advanced signal processing - algorithms, architectures, and implementations VII

作者： Yao, K Reed, C Hudson, R Lorenzelli, F Univ. of California/Los Angeles (United States)

ISBN: (纸本)0819425842

This paper considers ''blind beamforming'' operations on a wireless network of randomly distributed MEM sensors. Maximum power collection criterion is proposed and results in array weights obtained from the eigenvector corresponding to largest eigenvalue of a matrix eigenvalue problem. Theoretical justification of this approach to an extension of Szego's asymptotic distribution of eigenvalues is provided. Numerical results on propagation time delay estimation and loss of coherency due to propagation disturbances are presented.

关键词： random array array processing beamforming MEM sensor sensor network

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Window design for signal-dependent spectrogram using optimal kernel techniques 6

Window design for signal-dependent spectrogram using optimal...

引用

conference on advanced signal processing algorithms, architectures, and implementations VI

作者： Carson, CC Baraniuk, RG UNIV CALIF BERKELEY DEPT ELECT ENGN & COMP SCIBERKELEYCA 94720

ISBN: (纸本)0819422347

Time-frequency distributions (TFDs) have proven useful in a wide variety of nonstationary signal processing applications. While sophisticated optimal bilinear TFDs have been developed to extract the maximum possible time- frequency information from signals, certain applications dictate simpler linear, running-FFT processing techniques. In this paper, we propose a signal-dependent short-time Fourier transform/spectrogram that enjoys many of the advantages of optimal bilinear TFDs yet retains the simplicity and efficiency of running-FFT processing. In addition, we extend the optimal kernel design problem to linear spaces of signals.

关键词： time-frequency analysis spectrogram Wigner distribution optimal kernel design

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Identification of a multicomponent signal by a TEA scheme operating in the Time-Frequency plane

Identification of a multicomponent signal by a TEA scheme op...

引用

conference on advanced signal processing algorithms, architectures, and implementations Ix

作者： Lo Presti, L Olmo, G Galleani, L Politecn Torino Dipartimento Elettron I-10129 Turin Italy

ISBN: (纸本)0819432938

In this paper, a method for signal component separation, operating in the Time-Frequency (TF) plane and employing a Turbo Estimation Algorithm (TEA), is described. A novel 2D distribution is proposed, named Two Window Spectrogram (TWS), which is free from crossterms and able to yield good time anti frequency resolution. Then, a set of parameters is defined in the time-frequency plane, which are able to carry the relevant information on the signal components. An algorithm of estimation of these parameters is proposed, making use of a TEA scheme to yield improved performance. The algorithm has been tested by simulation, yielding very encouraging performance.

关键词： Thermal weapon sites Time-frequency analysis Detection theory Interference (communication) Prototyping signal processing signal to noise ratio Tantalum Yield improvement Fourier transforms

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FAST RECURSIVE LEAST-SQUARES algorithms FOR TOEPLITZ MATRICES

FAST RECURSIVE LEAST-SQUARES ALGORITHMS FOR TOEPLITZ MATRICE...

引用

CONF ON advanced signal processing algorithms, architectures, AND implementations 2

作者： QIAO, SZ McMaster Univ. (Canada)

ISBN: (纸本)0819406945

A new derivation of the QR-based fast recursive least squares algorithms for Toeplitz matrices is presented. algorithms for computing Q and R in the QR decomposition of the data matrix are proposed. These algorithms can be efficiently incorporated with the fast recursive least squares algorithm and can be performed only when they are needed.

关键词： Matrices signal processing Algorithm development Chemical elements Computer architecture Radon Analytical research Computer programming Computer simulations Numerical analysis

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Web-based distributed processing tools for crop classification using CGDI databases

Web-based distributed processing tools for crop classificati...

引用

conference on advanced signal processing algorithms architectures and implementations xIII

作者： Lampropoulos, G Chan, J Bardas, A McNairn, H Low, B AUG Signals Ltd Toronto ON M4V 1K7 Canada

ISBN: (纸本)0819450782

This paper is devoted to change detection for precision agriculture. It presents a new change detection methodology and an overview of an online image processing tool (***) with direct applicability for crop classification. The change detection algorithms discussed in the paper will be implemented on the web. They preserve the fine details of the pixel changes and furthermore may be used for crop classification. Image registration, calibration/normalization, pixel level transformations, clutter suppression and pixel level change detection are discussed and new technologies are presented. The effectiveness of the proposed technology is being tested on real SAR data with partial truthing.

关键词： crop classification change detection distributed processing

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Architecture for real time wood inspection

Architecture for real time wood inspection

引用

conference on advanced signal processing algorithms, architectures, and implementations x

作者： Malasne, N Paindavoine, M Lab Elect & Informat Image F-21078 Dijon France

This study has been realized to improve industrial machines that allow to analyze planks by detecting their width and too important defects thanks to a computer vision system. These machines are currently piloted by s... 详细信息

ISBN: (纸本)0819437611

关键词： real time processing defects detection FPGA

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Analytical approximations of translational subpixel shifts in signal and image registrations

Analytical approximations of translational subpixel shifts i...

引用

conference on advanced signal processing algorithms, architectures, and Implementantions xVIII

作者： Zhang, Qiang Wake Forest Univ Hlth Sci Biostat Sci Dept Winston Salem NC 27157 USA

ISBN: (纸本)9780819472946

Analytical approximations of translational subpixel shifts in both signal and image registrations are derived by setting the derivatives of a normalized cross correlation function to zero and solving them. Without the need of iterative searching, this methods achieves a complexity of only O(mn), given an image size of m x n. Without the need to upsample, computation memory is also saved. Tests using simulated signals and images show good results.

关键词： Subpixel image registration image superresolution

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Proceedings of SPIE: advanced signal processing algorithms, architectures, and implementations xI

Proceedings of SPIE: Advanced signal processing algorithms, ...

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advanced signal processing: algorithms, architectures and implementations xI

The proceedings contains 56 papers from the conference on SPIE: advanced signal processing algorithms, architectures, and implementations xI. The topics discussed include: modulation frequency and efficient audio coding;application of wavelet- and wavelet-packet-transform to human skin data;Wigner distribution and pulse propagation;time-frequency analysis using sidelobe apodization;spectral phase algorithm for detecting and estimating pitch;and minimum entropy approach to denoising time-frequency distributions.

关键词： signal processing

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