IMAGE CORRELATION OF PARTICLE DISTRIBUTION BY DISCRETE WAVELET TRANSFORM OF CAPACITANCE CT IMAGES

Masahiro TAKEI; Mitsuaki OCHI; Hui LI; Yoshifuru SAITO; Kiyoshi HORII

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IMAGE CORRELATION OF PARTICLE DISTRIBUTION BY DISCRETE WAVELET TRANSFORM OF CAPACITANCE CT IMAGES

机译：电容CT图像离散小波变换的粒子分布图像相关性

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Particle distributions in a cross section of a solid―air two-phase flow through a pipe are visualized by capacitance CT at a frame rate of 100 fps. The CT images are decomposed by the discrete wavelet transform, and the image correlation between the time-series inage and a standard choking image. The correlation coefficient on wavelet 0 at a choking state is close to 1.0. The level-0 wavelet transformation resolves the largest particle distribution features. This technique is expected to be useful as a basis for automatically judging blockage emergencies in airborne particle transport through pipelines.

机译：通过电容CT以100 fps的帧率可视化流经管道的固体-空气两相流横截面中的颗粒分布。 CT图像通过离散小波变换以及时间序列图像和标准窒息图像之间的图像相关性进行分解。在扼流状态下，小波0的相关系数接近1.0。 0级小波变换可解决最大的粒子分布特征。该技术有望作为自动判断通过管道进行的机载颗粒运输中堵塞紧急情况的基础。

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来源
《Journal of Flow Visualization and Image Processing》 |2002年第4期|p.271-280|共10页
作者
Masahiro TAKEI; Mitsuaki OCHI; Hui LI; Yoshifuru SAITO; Kiyoshi HORII;
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作者单位

Department of Mechanical Engineering, Nihon University, 8-14 Kanda Surugadai, Tokyo 101-8308, Japan;

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原文格式 PDF
正文语种 eng
中图分类应用力学;
关键词
capacitance CT; discrete wavelet transform; solid-air two-phase flow; pipeline; visualization;

机译：电容CT;离散小波变换;固相两相流;管道;可视化;

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IMAGE CORRELATION OF PARTICLE DISTRIBUTION BY DISCRETE WAVELET TRANSFORM OF CAPACITANCE CT IMAGES

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