Honeywell HD3HDIH User Manual page 83

HD3 equIP
Document 800-07361V5 Rev A
07/2013
®
Series H.264 Indoor High Resolution True Day/Night IP Dome Camera User Guide
Note The camera only measures motion inside the drawn region-of-interest box. So a
person or vehicle moving along the boundary of the box may or may not trigger
an alarm, because their motion will only be evaluated partially. It is therefore
important to adjust the region-of-interest boxes to fully cover the areas of interest.
In cameras with a wide field of view, or when activity happens far away from the
camera, people and vehicles might appear rather small in the image. In such cases, it
might not be possible to apply a single area of interest to the whole field of view and
reliably detect motion. In such cases, it is recommended to cover the camera view
with multiple, smaller region-of-interest boxes, and to concentrate on areas where
motion alarms are of most interest to the user, such as entrances, restricted access
areas, etc.
3. Use the medium sensitivity at 50% as the initial setting. It can be further adjusted as
explained below.
Note Observe VMD performance in all expected lighting conditions after the initial
configuration is applied. Ensure that relevant scene motion triggers alarms and
ensure that the camera is not reporting false alarms (such as VMD alarms
triggered due to image noise).
Increasing VMD sensitivity
If relevant scene motion does not trigger VMD alarms, the following adjustments will
increase VMD sensitivity:
• Decreasing the sensitivity level from 80% to 50%, or from 50% to 30%. This change
will cause smaller objects to trigger alarms and it will also require smaller contrast
level to report and alarm. This should be the primary adjustment mechanism.
• Reducing the size of the region-of-interest box (and adding more regions if needed).
This adjustment will cause smaller objects to also trigger VMD alarms.
Note After VMD sensitivity is increased, observe the performance in other lighting
conditions in case further tuning is required to prevent false alarms.
83