3D shape measuring sheet utilizing gravitational and geomagnetic fields

Hoshi T., Shinoda H.
Department of Information Physics and Computing, Graduate School of Information Science and Technology, University of Tokyo, Tokyo, Japan

Abstract: We introduce a novel sensing device named "three-dimensional capture sheet (3DCS)." The cloth-like sheet measures its own 3D shape with no external equipment. It has many potential applications such as 3D modeling, size and shape measurement, wearable motion capture, tactile sensor, and so on. It consists of a lattice structure inside of the sheet, and each link of the structure has a sensor chip consisting of a triaxial accelerometer and a triaxial magnetometer. The sensor chip measures the gravity and the geomagnetic field to obtain the link posture. After all the link postures are obtained, the whole shape of the sheet is reconstructed by combining them. Additionally, owing to the redundancy of the problem, the estimation error (caused by random noise, a distorted magnetic field, and so on) can be corrected. The feasibility and stability of the estimation algorithm are confirmed through simulations, and the prototype is presented. © 2008 SICE.
Author Keywords: 3D shape; Flexible sensing device; Geomagnetic field; Gravity; Sensor network

Year: 2008
Source title: Proceedings of the SICE Annual Conference
Art. No.: 4654785
Page : 915-920
Link: Scorpus Link
Document Type: Conference Paper
Source: Scopus
Authors with affiliations:
  1. Hoshi, T., Department of Information Physics and Computing, Graduate School of Information Science and Technology, University of Tokyo, Tokyo, Japan
  2. Shinoda, H., Department of Information Physics and Computing, Graduate School of Information Science and Technology, University of Tokyo, Tokyo, Japan
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