Image measurement method for three dimensional distribution of suspended sediment under complex turbulent flow condition

2015 Fiscal Year Final Research Report

• Project/Area Number: 26820195
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Hydraulic engineering
• Research Institution: Tohoku University
• Principal Investigator: Mitobe Yuta 東北大学, 工学(系)研究科(研究院), 助教 (60700135)
• Research Collaborator: IMADA Yosuke
• Project Period (FY): 2014-04-01 – 2016-03-31
• Keywords: 画像計測 / 浮遊砂濃度 / 3次元計測 / 水理実験

Outline of Final Research Achievements

This study proposed a new imaging technique to measure three dimensional distribution of suspended sediment. In this technique, color pattern illumination, which has different color layers, is projected from a PC projector, and scattered light by the suspended sand are recorded by a digital camera. Based on the intensity distributions of each color in the image, two dimensional distributions of number density of the sand are obtained for each color layer, and a three dimensional distribution is composed from these two dimensional distributions. In a series of physical test, reasonable three dimensional distributions were successfully obtained.

Free Research Field

海岸工学