3D shape reconstruction from synthetic images captured by a rotating periscope system with a single focal direction

A three-dimensional shape measurement system with only one camera and a rotating periscope is proposed. Many images are captured at every few degrees of periscope rotation. The distance along the optical axis of the camera from the focal point of the camera system to a certain point along the object surface is inversely proportional to the parallax. In this system, a circular streak is obtained by tracing a point on each image using the cross-correlation along the direction of periscope shift. The parallax can be calculated from the radius of the streak. Applying this method to shape measurement of the human face from synthetic images, the images were well reconstructed and the proposed system may be adaptable to a portable 3D shape acquisition system.

Authors and Affiliations

1. Research Institute of Energy Utilization, AIST, 305-8564, Tsukuba, Ibaraki, Japan

   Someya S.

2. University of Tokyo, Ibaraki, Japan

   Okamoto K. & Tanaka G.

Satoshi Someya: After receiving his Ph.D. in Nuclear Engineering in 1998 from the University of Tokyo, he worked as a Research Fellow of New Energy and Industrial Technology Development Organization (NEDO) (1998–2000) in the Mechanical Engineering Laboratory of AIST. He has worked at the National Institute of Advanced Industrial Science and Technology (AIST) of Tsukuba as a temporary researcher. He is a member of the Thermal Engineering Research Group. His research interests include Crystal Growth, CO2 sequestration, Flow Induced Vibration and Flow Visualization.

Koji Okamoto: He received his MSc (Eng) and Ph.D. in Nuclear Engineering in 1985 and 1992, respectively, from the University of Tokyo. He worked in the Department of Nuclear Engineering at Texas A&M University as a visiting associate professor in 1994. He has been working in the Nuclear Engineering Research Laboratory and at the University of Tokyo as an associate professor since 1993. His research interests include Quantitative Visualization, PIV, Holographic PIV, Flow Induced Vibration and Thermal-hydraulics in the Nuclear Power Plant.

Gentaro Tanaka: He received his MSc (Eng) in Nuclear Engineering in 1999 from University of Tokyo. He worked in the Nuclear Engineering Research Laboratory at the University of Tokyo as a Research Associate from 1999 to 2002. He has been working in Bain & Company as a Associate Consultant since 2002. His research interests include laser specklegram, free surface turbulence, PIV, and stereoscopic PIV.

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