낭만공대생의 HCI(Human Computer Interaction) 이야기

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Abstract

This paper introduces MicPen, a low-cost pressuresensitive stylus pen interface for standard touchscreen displays that uses a microphone to estimate the amount of pressure applied to the pen. This is achieved by filtering and analyzing the acoustic signal generated when the tip of the pen is rubbed on the touchscreen. The advantage of this approach is that it is inexpensive, reliable and suitable for mobile interaction because it does not require mechanical parts to sense the input pressure. Results from a user study shows that the participants recognized five out of ten different pressure levels with perfect accuracy, and nine out of ten with minimal error.


Publications

http://www.romanticengineer.com/paper/pseudoPen.pdf

Abstract

We propose a new interaction technique, called PseudoButton, which emulates a pressure-sensitive touch sensor by repurposing a built-in microphone on mobile devices. This simple and novel technique increases input expressivity of the device and expands its interaction area for users to alleviate the occlusion problem caused by touchscreens without adding extra sensors. To verify our idea, we implemented a prototype and conducted a preliminary evaluation on it. The results show that participants can input at accuracy of 94% for five different pressure levels with minimal
error.

Publications

http://www.romanticengineer.com/paper/pseudoButton.pdf

Representative Picture

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http://www.romanticengineer.com/paper/EXMAR.pdf