Campbell CCFC Instruction Manual - page 56

CCFC Field Camera 

A-1 

outdoor scenes. The adaptive motion detect method automatically 

adjusts the motion detect threshold based on the average motion 

characteristics of a given scene. 

The adaptive motion detect is a very good feature for most 

applications. The adaptive motion detect scheme sets its threshold 

values based on a 20 second moving average of the scene. For 

example, if a CCFC was focused on a ceiling fan that was off, the 

CCFC motion detect would be triggered if the fan was turned on. 

After a period of 20 seconds the motion detect would no longer be 

triggered as the continuous motion of the fan would automatically 

increase the required motion detect trigger level. 

Another consideration with adaptive motion detect is that when a 

continuous level of motion is introduced into a scene, the motion 

detect sensitivity decreases. The result is that some motion may 

not be detected when a continuous dynamic scene exists. For 

example, a person walking through a scene with windblown trees 

may not trigger the motion detect capture that would normally be 

triggered when there is no wind and the trees are not moving.  

The sensitivity level for motion detect is the only user 

configurable parameter for Motion Detect operation. A value of 1 

provides the least sensitive motion detect threshold setting and a 

value of 99 provides the most sensitive motion detect threshold 

setting. Motion detect can be a complicated feature to implement. 

It is recommended to start off with a motion detect threshold 

setting of 50 and experiment with the performance based on the 

application.  

If the camera is not detecting motion that is desired, then the 

motion detect sensitivity level should be increased. If the camera 

produces too many false triggers, the motion detect level should 

be decreased. Note that there is always a possibility that the 

camera can either produce false motion detects or not detect 

desirable motion due to too many scene variables. In some cases 

where motion detect of a small object is required, it may be 

necessary to set a motion detect level that will also produce 

frequent false triggers.  

Motion Detect Notes: 

  If a moving object that requires detection occupies a large 

percentage of the photo scene, the motion detect tends to