PT Unknown AU Pierluigi Casale Oriol Pujol Petia Radeva TI Face-to-face social activity detection using data collected with a wearable device BT 4th Iberian Conference on Pattern Recognition and Image Analysis PY 2009 BP 56–63 VL 5524 DI 10.1007/978-3-642-02172-5_9 AB In this work the feasibility of building a socially aware badge that learns from user activities is explored. A wearable multisensor device has been prototyped for collecting data about user movements and photos of the environment where the user acts. Using motion data, speaking and other activities have been classified. Images have been analysed in order to complement motion data and help for the detection of social behaviours. A face detector and an activity classifier are both used for detecting if users have a social activity in the time they worn the device. Good results encourage the improvement of the system at both hardware and software level ER