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
影响因子:
2.3
通讯作者:
Guo XH
中科院分区:
文献类型:
--
作者:
Guo Xinhua;Yu Xiantao;Sun Song;Wang Pan;Nakamura Kentaro;Guo XH
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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