Structure about people gathering detection parameters.
struct{ NET_VCA_POLYGON struRegion; float fDensity; BYTE bySensitivity; BYTE byRes; WORD wDuration; }NET_VCA_HIGH_DENSITY,*LPNET_VCA_HIGH_DENSITY;
Coordinates of detection region, refer to the structure NET_VCA_POLYGON for details.
Density ratio, range: [0.1, 1.0]
Sensitivity, range: [1,5]
Reserved, set to 0.
Alarm time duration, which ranges from 20s to 360s.