Detecting shape deformation of soft objects using directional photoreflectivity measurement

  • Authors:

  • Yuta Sugiura;Gota Kakehi;Anusha Withana;Calista Lee;Daisuke Sakamoto;Maki Sugimoto;Masahiko Inami;Takeo Igarashi

  • Affiliations:

  • Keio University & JST ERATO IGARASHI Design Interface Project, Yokohama & Tokyo, Japan;Keio University, Yokohama, Japan;Keio University & JST ERATO IGARASHI Design Interface Project, Yokohama & Tokyo, Japan;Keio University, Yokohama, Japan;The University of Tokyo & JST ERATO IGARASHI Design Interface Project, Tokyo, Japan;Keio University & JST ERATO IGARASHI Design Interface Project, Yokohama & Tokyo, Japan;Keio University & JST ERATO IGARASHI Design Interface Project, Yokohama & Tokyo, Japan;The University of Tokyo & JST ERATO IGARASHI Design Interface Project, Tokyo, Japan

  • Venue:
  • Proceedings of the 24th annual ACM symposium on User interface software and technology
  • Year:
  • 2011

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Abstract

We present the FuwaFuwa sensor module, a round, hand-size, wireless device for measuring the shape deformations of soft objects such as cushions and plush toys. It can be embedded in typical soft objects in the household without complex installation procedures and without spoiling the softness of the object because it requires no physical connection. Six LEDs in the module emit IR light in six orthogonal directions, and six corresponding photosensors measure the reflected light energy. One can easily convert almost any soft object into a touch-input device that can detect both touch position and surface displacement by embedding multiple FuwaFuwa sensor modules in the object. A variety of example applications illustrate the utility of the FuwaFuwa sensor module. An evaluation of the proposed deformation measurement technique confirms its effectiveness.