
146 • Configuring the ViconNet System XX112-36-00 Rev 909 Kollector Hybrid Network Digital Video Recorder
Option Description
The Block Size Control selector enables you to define how many blocks of the colored grid
arrays must be simultaneously involved in the change before an alarm is triggered. For
example:
• 1 (the most sensitive setting) – indicates that an alarm should be triggered if a change is
detected in even one block amongst all the defined ROIs (that is, the alarm triggering is
unlimited).
• 16 (the least sensitive setting) – indicates that the change must be simultaneously
detected in at least 16 blocks within the entire view area. The blocks do not have to be
contiguous.
NOTE: The selected minimum cannot exceed the total number of blocks defined in
ROIs.
The Sensitivity Control enables you to adjust the triggering sensitivity (by dragging the slider)
between High (higher detection of changes) to Low (lower detection of changes).
NOTE: In general, a "normal" sensitivity should be selected. The highest
sensitivities may generate false alarms, while the lowest may cause
interesting events to be missed.
The Show Grid button applies a gray planning grid to the parts of the window where no ROIs
(colored grid blocks) are defined. The gray grid is only for purposes of viewing where ROIs
may potentially be defined and does not affect the change-detection process. When selected,
the button changes into a Hide Grid button by which the planning grid can be suppressed,
making only the "VMD-active" colored grid blocks visible.
11. When you have finished defining grids and VMD sensitivity for the selected camera, click
.
Kommentare zu diesen Handbüchern