Spatio-Temporal Grids for Daily Living Action Recognition

International audienceThis paper address the recognition of short-term daily living actions from RGB-D videos. The existing approaches ignore spatio-temporal contextual relationships in the action videos. So, we propose to explore the spatial layout to better model the appearance. In order to encode temporal information, we divide the action sequence into temporal grids. We address the challenge of subject invariance by applying clustering on the appearance features and velocity features to partition the temporal grids. We validate our approach on four public datasets. The results show that our method is competitive with the state-of-the-art