In clear weather. Axis specifies, in accordance with Johnson's criteria, an AXIS Q1921 with a 60 mm lens to have detection range of 1200 m (3900 ft) for a person. Based on this estimation which of the following is true?
A.
An analysis or analytic software is able to detect a person in 1200 m distance with 90% probability
B.
A human observer is able to detect a person in 1200 m distance with 50% probability
C.
A human observer can discern a person versus a car in 1200 m distance with 90% probability
D.
An analysis or analytic software is able to discern a person versus a car in 1200 m distance with 50% probability
According to Johnson's criteria, the detection range for a person with an AXIS Q1921 with a 60 mm lens in clear weather is 1200 meters (3900 feet). This means that a human observer is able to detect a person at this distance with a 50% probability. Johnson's criteria is a widely accepted method for calculating the probability of detection, recognition, and identification of objects in surveillance imagery.
Contribute your Thoughts:
Chosen Answer:
This is a voting comment (?). You can switch to a simple comment. It is better to Upvote an existing comment if you don't have anything to add.
Submit