%0 Conference Proceedings %T Thumbs Up: 3D Gesture Input on Mobile Phones Using the Front Facing Camera %+ University of Auckland [Auckland] %+ Australian National University (ANU) %A Schmieder, Paul %A Hosking, John %A Luxton-Reilly, Andrew %A Plimmer, Beryl %Z Part 7: Gesture-Based User Interface Design and Interaction II %< avec comité de lecture %( Lecture Notes in Computer Science %B 14th International Conference on Human-Computer Interaction (INTERACT) %C Cape Town, South Africa %Y Paula Kotzé %Y Gary Marsden %Y Gitte Lindgaard %Y Janet Wesson %Y Marco Winckler %I Springer %3 Human-Computer Interaction – INTERACT 2013 %V LNCS-8118 %N Part II %P 318-336 %8 2013-09-02 %D 2013 %R 10.1007/978-3-642-40480-1_20 %K Motion gestures %K mobile interaction %K image recognition %Z Computer Science [cs]Conference papers %X We use the front facing camera in a smart phone to capture gesture input. Thumb gestures performed above the camera are recognized and used to invoke commands. In contrast to other input modalities the camera requires no device movements and no valuable screen space is used. To be viable, this type of interaction requires gestures which are comfortable and memorable for the user and real-time accurate recognition of those gestures. Given the performance constraints of phones and their cameras we needed to determine whether accurate and reliable recognition is possible and identify types of gestures that are recognizable and user appropriate. As a proof of concept, we conducted a user study testing three gestures for performance and user satisfaction. The results demonstrate that the 3D gestural input is successful and we provide detailed insights into successful recognition strategies for this novel interaction modality. %G English %Z TC 13 %2 https://inria.hal.science/hal-01501752/document %2 https://inria.hal.science/hal-01501752/file/978-3-642-40480-1_20_Chapter.pdf %L hal-01501752 %U https://inria.hal.science/hal-01501752 %~ IFIP-LNCS %~ IFIP %~ IFIP-AICT %~ IFIP-TC13 %~ IFIP-INTERACT %~ IFIP-LNCS-8118