Detection Ranges - FLIR Ariel Gen IIICB-3308 User And Installation Manual

Configuration and Operation
An urban area can present a set of difficult challenges to providing accurate detections. These include
irregular lighting conditions and buildings, high density of people and animals, and movement around the
clock. Placing the camera in an ideal location may not be possible due to legal or privacy concerns.
These factors need to be taken into account when determining the coverage and the analytic rule that is
used.

5.3.1.6.8.6 Detection Ranges

Detection ranges are based on the number of pixels that the object occupies in the scene, regardless of
what the object may be. Therefore, it is vital to set relevant and accurate minimum and maximum objects
size values.
Other than the object size, which is the critical factor, detection range criteria also depend on a large
number of environmental and system variables
These include:
·
Background temperature (hot desert versus cold snow)
·
Atmospheric conditions (clear skies versus fog).
These factors directly influence the following criteria:
·
Scene's contrast level
·
Visibility of the target
·
Ability to understand the nature of the target (moving vehicle vs. crawling human)
·
Speed, and movement of the target object
For a 'real' Object Size of width = 800mm ; height = 1800mm. (Typically the dimensions representing a
person):
Note:
1. These are rough estimates.
76
Model
CF-6308-00-0 -P Iris lens
CM-3308-11-I
CB-3308-11-I
CM-3304-11-I
CM-3304-21-I
CB-3304-11-I
CB-3304-21-I
CB-3304/CB-3308 User and Installation Guide
Object
Distance
Wide Tele
9m 28m
9m 22m
9m 22m
8m 25m
25m 50m
8m 25m
25m 50m
March 10, 2019