Frequency Representation: Visualization and Clustering of Acoustic Data Using Self-Organizing Maps

Frequency Representation: Visualization and Clustering of Acoustic Data Using Self-Organizing Maps
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频率表示:使用自组织图对声学数据进行可视化和聚类

DOI:
10.1177/0161734617706476
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发表时间:
2017-05
期刊:
影响因子:
2.3
通讯作者:
Guo XH
Guo XH
中科院分区:
工程技术4区
文献类型:
--
作者:
Guo Xinhua;Yu Xiantao;Sun Song;Wang Pan;Nakamura Kentaro;Guo XH

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三维(3D)声学数据中频率信息的提取和显示是分析对象特征的重要步骤,因为轮廓、尺寸、表面结构和材料属性等特征可能表现出频率依赖性。本研究提出了多光谱声学成像(MSAI)中基于相位信息的频率表示(FR),以克服图像显示中强度或幅度信息的限制。对从刻有五个不同字母的刚性表面收集的 3D 声学数据进行了实验。结果表明,所提出的FR技术不仅可以通过代表频率特征的颜色来识别五个字母的深度,还可以展示五个字母的3D图像,提供传统声学成像无法提供的更详细的特征。
Extraction and display of frequency information in three-dimensional (3D) acoustic data are important steps to analyze object characteristics, because the characteristics, such as profiles, sizes, surface structures, and material properties, may show frequency dependence. In this study, frequency representation (FR) based on phase information in multispectral acoustic imaging (MSAI) is proposed to overcome the limit of intensity or amplitude information in image display. Experiments are performed on 3D acoustic data collected from a rigid surface engraved with five different letters. The results show that the proposed FR technique can not only identify the depth of the five letters by the colors representing frequency characteristics but also demonstrate the 3D image of the five letters, providing more detailed characteristics that are unavailable by conventional acoustic imaging.
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