The IQ series of products are armed with comprehensive NAMS algorithms that allow them to deal with a number of issues that can be caused by light and shadows. These include the ability to cope with:
- Global light changes (e.g. a cloud passing over the sun or a light being switched off or on)
- Creeping light (e.g. where light from a skylight moves slowly across a floor)
- Long evening shadows
- Waving trees and fluttering leaves
- Extremely bright lights (e.g. headlights that point at the camera)
The system also gives a warning if it cannot cope due to situations such as overcrowding, inclement weather (such as fogs and blizzards) or sabotage (someone putting a sock over the camera or painting it black).
A warning will advise the operator that the camera can no longer see adequately, highlight the problem and suggest that he sends out a patrol to investigate the situation.
|
