Structure about people amount changed alarm parameters.
struct{ NET_VCA_POLYGON struRegion; BYTE bySensitivity; BYTE byPeopleNumThreshold; BYTE byDetectMode; BYTE byNoneStateEffective; WORD wDuration; BYTE byRes[2]; }NET_VCA_PEOPLENUM_CHANGE, *LPNET_VCA_PEOPLENUM_CHANGE;
Coordinates of detection region, refer to the structure NET_VCA_POLYGON for details.
Sensitivity, range: [1,100]
Number threshold of people, range: [0,5], default: 1
Detection mode, compared with number threshold of people: 1-more than, 2-less than, 3-equal to, 4-not equal to
Whether the no person status is valid: 0-no, 1-yes
Event time duration, unit: second, which ranges from 1 to 3600, default: 2
Reserved, set to 0.