报告人:Motoharu FUJIGAKI, Professor of University of Fukui,
时间：2016年9月26日下午15:30
地点基础教学楼A303
Abstract：Real-time 3D shape measurement is required in industrial fieldsfor analyzing the behavior of a breaking object, a vibrating object or a rotating object. A shape measurement performed using a phase-shifting method can measure the shape with high spatial resolution because thecoordinates can be obtained pixel by pixel. A light-source-stepping method(LSSM) that uses a linear LED array by means of a whole-space tabulation method (WSTM) has been proposed. Accurate shape measurement can be performed using this method. The response speed of the LED array is greater than 12 kHz. In this paper, height measurement is performed usingWSTM and LSSM with a linear LED array and a high-speed camera. It was verified that the response speed of the linear LED is greater than 200 kHz.The phase shifting was performed at 12 kHz, and the height measurement of the vibrating woofer was performed at 4 kHz using a 3-step phase-shifting method.
Expert introduction：Motoharu Fujigaki received his BE and ME degrees in mechanical engineering from Osaka University in 1990 and 1992, respectively. He received his doctoral degree from Osaka University in 2001. He was working in NABCO Ltd. from 1992 to 1995. He moved to Department of opto-mechatronics, faculty of Systems Engineering, Wakayama University in 1995 as a research associate. He became an associate professor in 2003. He moved to Human and Artificial Intelligent Systems, Graduate School of Engineering, University of Fukui as a full professor in 2015. He is interested in optical metrology using image processing, especially 3D shape measurement using gating projection method, deformation measurement using phase analysis method used for structural health monitoring and small displacement and strain distribution measurement using laser interferometry. He published 78 papers. His 44 inventions have been authorized as patents.
