超声波成像检测中分布式压缩传感的空间-频率并行子采样

IF 3.8 2区 物理与天体物理 Q1 ACOUSTICS
Jiachen Xiao , Li Lin , Donghui Zhang , Ruisen Zhai , Zhiyuan Ma
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引用次数: 0

摘要

针对目前超声波成像检测中硬件要求高、数据存储容量不足的问题,开发了一种使用可编程设备的新方法,将空间-频率并行子采样与分布式压缩传感同步正交匹配追求(DCS-SOMP)算法相结合,以少量的子采样数据实现快速、高质量的超声波成像检测。采用空间稀疏测量方法实现空间子采样,并最大限度地减少信号数量。此外,还利用频率子采样来大幅减少时域信号的数据量,同时通过截断主要测试频率成分来确保信号质量。然后,利用分布式压缩传感(DCS)对子采样数据进行多通道数据重建。超声波扫描成像实验是在一个碳钢试样上进行的,试样上有六个不同深度的横向通孔,通孔直径为 Ф1.5mm。超声波信号采用空间-频率并行子采样法采集,随后使用 DCS-SOMP 算法进行重建。结果表明,所提出的方法只用了完整数据的 1/8,就能获得与完整数据相当的图像质量,同时还能准确定位和量化缺陷。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Spatial-frequency parallel subsampling for distributed compressive sensing in ultrasonic imaging inspection

To address the problem of the high hardware requirements and insufficient data storage capacity in current ultrasonic imaging testing, a novel approach is developed using a programmable device, which combines spatial-frequency parallel subsampling with the distributed compressive sensing simultaneous orthogonal matching pursuit (DCS-SOMP) algorithm to achieve fast and high-quality ultrasonic imaging inspection with a small amount of subsampled data. The spatial sparse measurement method was employed to achieve spatial subsampling and minimize the count of signals. Additionally, frequency subsampling was utilized to significantly reduce the data volume of time-domain signals while ensuring signal quality by truncating the primary testing frequency components. The subsampled data was then reconstructed using distributed compressive sensing (DCS) for multi-channel data reconstruction. The experiment of ultrasonic scanning imaging was conducted on a carbon steel specimen containing six transverse through-holes with a diameter of Ф1.5 mm at different depths. The ultrasonic signals were acquired using the spatial-frequency parallel subsampling method, and subsequently reconstructed using the DCS-SOMP algorithm. The results show that the proposed method achieves comparable image quality to that obtained with complete data, using only 1/8 of the complete data, while accurately locating and quantifying defects.

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来源期刊
Ultrasonics
Ultrasonics 医学-核医学
CiteScore
7.60
自引率
19.00%
发文量
186
审稿时长
3.9 months
期刊介绍: Ultrasonics is the only internationally established journal which covers the entire field of ultrasound research and technology and all its many applications. Ultrasonics contains a variety of sections to keep readers fully informed and up-to-date on the whole spectrum of research and development throughout the world. Ultrasonics publishes papers of exceptional quality and of relevance to both academia and industry. Manuscripts in which ultrasonics is a central issue and not simply an incidental tool or minor issue, are welcomed. As well as top quality original research papers and review articles by world renowned experts, Ultrasonics also regularly features short communications, a calendar of forthcoming events and special issues dedicated to topical subjects.
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