Anomaly Detection Based on Local Nearest Neighbor Distance Descriptor in Crowded Scenes

<table>(a) Two local regions selected in the scene; (b) 2D scatter plot of LNND descriptor from local region 1; (c) 2D scatter plot of LNND descriptor from local region 2.</table>

The Scientific World Journal

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Figure 4

Figure 4: Anomaly Detection Based on Local Nearest Neighbor Distance Descriptor in Crowded Scenes 