Vinh Nguyen, Sang Ho Yoon, Ansh Verma, Karthik Ramani
BendID: Flexible Interface for Localized Deformation Recognition
Proceedings of the ACM international Joint Conference on Pervasive and Ubiquitous Computing, Sep 13-17, Seattle, USA. pp 553-557, 2014

We present BendID, a bendable input device that recognizes the location, magnitude and direction of its deformation. We use BendID to provide users with a tactile metaphor for pressure based input. The device is constructed by layering an array of indium tin oxide (ITO)-coated PET film electrodes on a Polymethylsiloxane (PDMS) sheet, which is sandwiched between conductive foams. The pressure values that are interpreted from the ITO electrodes are classified using a Support Vector Machine (SVM) algorithm via the Weka library to identify the direction and location of bending. A polynomial regression model is also employed to estimate the overall magnitude of the pressure from the device. A model then maps these variables to a GUI to perform tasks. In this preliminary paper, we demonstrate this device by implementing it as an interface for 3D shape bending and a game controller.


Sang Ho Yoon
About Sang Ho Yoon

Sang Ho graduated from Carnegie Mellon University with B.S degree in 2008 with major in mechanical engineering and minor in robotics. In the same year, he graduated from the same school with M.S degree in mechanical engineering. After graduation, he worked at LG display & LG Electronics. There, he worked as a research engineer to carry out several projects like ‘Transparent & Public Display’ and ‘Assistive & Rehabilitation Robot’.¬†Currently, he is a second-year Ph.D student under Prof.Ramani as a research assistant. Current study focuses on tangible & wearable interface application and sensor development for natural human computer interaction.

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Posted in 2014, Ansh Verma, Embedded Input, Publications, Sang Ho Yoon, TANGIBLE, EMBEDDED & EMBODIED INTERFACES