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Michael Braun, Sarah Theres Völkel, Gesa Wiegand, Thomas Puls, Daniel Steidl, Jannick Weiß, Florian Alt
The Smile is The New Like: Controlling Music with Facial Expressions to Minimize Driver Distraction
In MUM '18: Proceedings of the 17th International Conference on Mobile and Ubiquitous Multimedia. Cairo, Egypt. November 25 - 28, 2018. ACM, New York, NY, USA. (bib)

The control of user interfaces while driving is a textbook ex- ample for driver distraction. Modern in-car interfaces are growing in complexity and visual demand, yet they need to stay simple enough to handle while driving. One common approach to solve this problem are multimodal interfaces, incorporating e.g. touch, speech, and mid-air gestures for the control of distinct features. This allows for an optimiza- tion of used cognitive resources and can relieve the driver of potential overload. We introduce a novel modality for in-car interaction: our system allows drivers to use facial expressions to control a music player. The results of a user study show that both implicit emotion recognition and explicit facial expressions are applicable for music control in cars. Subconscious emotion recognition could decrease distraction, while explicit expressions can be used as an alternative input modality. A simple smiling gesture showed good potential, e.g. to save favorite songs.