Enhancement of time-domain acoustic imaging based on generalized cross-correlation and spatial weighting

Nicolas Quaegebeur; Thomas Padois; Philippe-Aubert Gauthier; Patrice Masson

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Enhancement of time-domain acoustic imaging based on generalized cross-correlation and spatial weighting

机译：基于广义互相关和空间加权的时域声像增强

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摘要

In this paper, an alternative formulation of the time-domain beamforming is proposed using the generalized cross-correlation of measured signals. This formulation uses spatial weighting functions adapted to microphone positions and imaging points. The proposed approach is demonstrated for acoustic source localization using a microphone array, both theoretically and experimentally. An increase in accuracy of acoustic imaging results is shown for both narrow and broadband sources, while a factor of reduction up to 20 in the computation time can be achieved, allowing real-time or volumetric source localization over very large grids.

机译：在本文中，提出了使用测量信号的广义互相关的时域波束形成的另一种形式。该公式使用适合麦克风位置和成像点的空间加权功能。理论上和实验上都证明了所提出的方法用于使用麦克风阵列进行声源定位。窄声源和宽带声源的声学成像结果的准确性均得到提高，而计算时间却可减少多达20倍，从而可以在非常大的网格上实时或按体积进行声源定位。

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来源
《Mechanical systems and signal processing》 |2016年第6期|515-524|共10页
作者
Nicolas Quaegebeur; Thomas Padois; Philippe-Aubert Gauthier; Patrice Masson;
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作者单位

GAUS - Department of Mechanical Engineering, Universite de Sherbrooke, Sherbrooke, QC, Canada J1K 2R1;

GAUS - Department of Mechanical Engineering, Universite de Sherbrooke, Sherbrooke, QC, Canada J1K 2R1;

GAUS - Department of Mechanical Engineering, Universite de Sherbrooke, Sherbrooke, QC, Canada J1K 2R1;

GAUS - Department of Mechanical Engineering, Universite de Sherbrooke, Sherbrooke, QC, Canada J1K 2R1;

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原文格式 PDF
正文语种 eng
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关键词
Acoustic imaging; Beamforming; Array processing; Generalized cross-correlation;

机译：声学成像;波束成形数组处理;广义互相关;

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专利

1. Acoustic source localization based on the generalized cross-correlation and the generalized mean with few microphones [J] . Padois Thomas The Journal of the Acoustical Society of America . 2018,第5期

机译：基于广义互相关的声学源定位和少数麦克风的概括平均值
2. A new distance measure based on generalized Image Normalized Cross-Correlation for robust video tracking and image recognition [J] . Arie Nakhmani, Allen Tannenbaum Pattern recognition letters . 2013,第3期

机译：基于广义图像归一化互相关的新距离度量，用于鲁棒的视频跟踪和图像识别
3. Investigation of contrast-enhanced subtracted breast CT images with MAP-EM based on projection-based weighting imaging [J] . Zhengdong Zhou, Shaolin Guan, Runchao Xin, Australasian physical & engineering sciences in medicine . 2018,第2期

机译：基于投影加权成像的MAP-EM对比增强乳腺CT减影研究
4. ACOUSTIC IMAGING USING DIFFERENT WEIGHTING FUNCTIONS WITH THE GENERALIZED CROSS CORRELATION BASED ON THE GENERALIZED MEAN [C] . Thomas Padois, Olivier Doutres, Hugues Nelisse, International Congress on Sound and Vibration . 2019

机译：使用不同加权函数的声学成像，具有基于概括平均值的广义互相关
5. Finite Element Based Interpolation Methods for Spatial and Temporal Resolution Enhancement for Image Sequences. [D] . Wu, Yan. 2010

机译：基于有限元的插值方法，用于图像序列的时空分辨率增强。
6. A New Distance Measure Based on Generalized Image Normalized Cross-Correlation for Robust Video Tracking and Image Recognition [O] . Arie Nakhmani, Allen Tannenbaum -1

机译：基于广义图像归一化跨相关的新距离测量用于鲁棒视频跟踪和图像识别
7. Acoustic source localization based on the generalized cross-correlation and the generalized mean with few microphones [O] . Thomas Padois 2018

机译：基于广义互相关的声学源定位和少数麦克风的概括平均值
8. Spatially Varying Aperture Weighting for Sidelobe Reduction and Resolution Enhancement of Imagery [R] . McCorkle, J. W. , Bennett, M. 1998

机译：空间变化的孔径加权，用于旁瓣减少和分辨率增强图像

Enhancement of time-domain acoustic imaging based on generalized cross-correlation and spatial weighting

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