PT Journal
AU Estefania Talavera
   Carolin Wuerich
   Nicolai Petkov
   Petia Radeva
TI Topic modelling for routine discovery from egocentric photo-streams
SO Pattern Recognition
JI PR
PY 2020
BP 107330
VL 104
DI 10.1016/j.patcog.2020.107330
DE Routine; Egocentric vision; Lifestyle; Behaviour analysis; Topic modelling
AB Developing tools to understand and visualize lifestyle is of high interest when addressing the improvement of habits and well-being of people. Routine, defined as the usual things that a person does daily, helps describe the individuals’ lifestyle. With this paper, we are the first ones to address the development of novel tools for automatic discovery of routine days of an individual from his/her egocentric images. In the proposed model, sequences of images are firstly characterized by semantic labels detected by pre-trained CNNs. Then, these features are organized in temporal-semantic documents to later be embedded into a topic models space. Finally, Dynamic-Time-Warping and Spectral-Clustering methods are used for final day routine/non-routine discrimination. Moreover, we introduce a new EgoRoutine-dataset, a collection of 104 egocentric days with more than 100.000 images recorded by 7 users. Results show that routine can be discovered and behavioural patterns can be observed.
ER