Crowd Event Perception Based on Spatiotemporal Weber Field
Figure 3
Fluctuation of video signal in spatiotemporal domain. (a) Original crowd image, in which we marked a cross line with red dots to investigate the fluctuation. (b) Fluctuations at the corresponding cross line in spatiotemporal domains, where the green circle indicates variations at background pixels in spatial domain and the red circles indicated fluctuations for moving crowd in both spatial and temporal domains.
