CST Video Analytics & AI Surveillance 3

Question 1

What is 'audio analytics' in a surveillance system designed to detect?

Accepted Answer

Sound events such as gunshots, glass breaking, or aggressive speech

Answer

Audio analytics processes sound in real time to detect specific events like gunshots, breaking glass, or screaming, triggering alerts even when visual analytics may not detect a threat.

Question 2

Which metric is commonly used to measure the accuracy of a video analytics system?

Accepted Answer

Detection rate and false positive rate

Answer

Detection rate (true positives caught) combined with false positive rate (incorrect alerts) are the standard metrics for evaluating video analytics accuracy and performance.

Question 3

What is the purpose of 'camera tamper detection' in a video analytics system?

Accepted Answer

Alerting when a camera is obstructed, moved, or spray-painted

Answer

Camera tamper detection identifies when a camera has been physically interfered with—such as being covered, repositioned, or defaced—and triggers an immediate alert.

Question 4

When integrating video analytics with an access control system, what type of event can trigger an automatic door lock?

Accepted Answer

Unauthorized person detected in a restricted zone

Answer

Integrated systems can use video analytics to detect unauthorized presence in a restricted zone and automatically signal the access control system to lock doors or trigger alarms.

Question 5

What is a key privacy consideration when deploying facial recognition in a public surveillance system in the US?

Accepted Answer

Complying with applicable local, state, and federal regulations governing biometric data collection

Answer

Facial recognition involves collecting biometric data, and technicians must ensure the deployment complies with applicable laws, including state biometric privacy acts and Fourth Amendment protections.

(CST) Certified Surveillance Technician Practice Test

(CST) Certified Surveillance Technician Practice Test

CST Video Analytics & AI Surveillance 3