Table 1.

Different scenes and parameter values.

Crowded Scenes	Symbol of Parameter	The Value
Train station scene in Figure 5	ε M × N	13 480 × 360
Single retrograde scene in Figure 6	ε M × N	15 480 × 360
Marathon scene in Figure 7	ε M × N	11 640 × 480
Pilgrimage scene in Figure 8	ε M × N	15 640 × 480