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Tuesday, June 5 • 9:00am - 10:30am
Paper 4.1

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The Phone with the Flow: Combining Touch + Optical Flow in Mobile Instruments
by Cagan Arslan, Florent Berthaut, Jean Martinet, Ioan Marius Bilasco & Laurent Grisoni

Mobile devices have been a promising platform for musical performance thanks to the various sensors readily available on board. In particular, mobile cameras can provide rich input as they can capture a wide variety of user gestures or environment dynamics. However, this raw camera input only provides continuous parameters and requires expensive computation. In this paper, we propose to combine motion/gesture input with the touch input, in order to filter movement information both temporally and spatially, thus increasing expressiveness while reducing computation time. We present a design space which demonstrates the diversity of interactions that our technique enables. We also report the results of a user study in which we observe how musicians appropriate the interaction space with an example instrument.

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