Development of a non-intrusive and efficient flow monitoring technique: The space-time image velocimetry (STIV)

被引：158

作者：

Fujita, Ichiro ^{[1
]}

Watanabe, Hideki ^{[2
]}

Tsubaki, Ryota ^{[2
]}

机构：

[1] Kobe Univ, Dept Architecture & Civil Engn, Nada Ku, 1-1 Rokkodai Cho, Kobe, Hyogo 6578501, Japan

[2] Kobe Univ, Grad Sch Sci & Technol, Nada Ku, Kobe, Hyogo 6578501, Japan

来源：

INTERNATIONAL JOURNAL OF RIVER BASIN MANAGEMENT | 2007年 / 5卷 / 02期

关键词：

River flow measurement; image analysis; space-time image velocimetry (STIV); large-scale image velocimetry (LSPIV); real time measurement;

D O I：

10.1080/15715124.2007.9635310

中图分类号：

TV21 [水资源调查与水利规划];

学科分类号：

081501 ;

摘要：

A novel image analysis technique for measuring river surface flow is proposed. When we assume that the brightness distribution of river surface image is convected with the surface velocity, a space-time image for a searching line set parallel to the main flow would indicate velocity information as its image orientation. The new technique, the space-time image velocimetry (STIV), is capable to measure the orientation angle of the pattern using the eigenvalue analysis of the local space-time image. The performance of STIV is compared with the other image analysis technique, the large-scale particle image velocimetry (LSPIV), previously proposed by the authors and it is shown that STIV is an alternative image analysis method for measuring streamwise velocity distributions efficiently.

引用

页码：105 / 114

页数：10