A Heat-Map-Based Algorithm for Recognizing Group Activities in Videos - Lin, Weiyao; Chu, Hang; Wu, Jianxin; Sheng, Bin; Chen, Zhenzhong (IEEE transactions on circuits and systems for video technology, 2013)
Keywords: Activity recognition; Applied sciences; Diffusion processes; Exact sciences and technology; Feature extraction; group activity; heat map; Heating; Information, signal and communications theory; Pattern recognition; Signal processing; surface matching; Surface treatment; Telecommunications and information theory; Trajectory; Videos; Performance evaluation; Thermal diffusion; heat map; Gesture recognition; Activity levels; group activity; Algorithm; Heat source; surface matching; Multiscale method; A posteriori estimation; Diffusion process; Activity recognition; Curve fitting