eLine Technology ETV_v7 - Manual (Page 71)

ETV System Server Software - User’s Guide Page 71
9.1 Video Analytics Calibration
Before rules may be added and configured, the video analytics must be calibrated for each camera to ensure
the proper detection and tracking of objects.
General
To reduce CPU usage, Vigil Server reduces the resolution of the image used for Analytics calculations. It is
strongly recommended that the Max Kernel Resolution be set to CIF. Increasing the Max Kernel Resolution
setting will only affect camera views with extremely wide camera angles where objects are small enough that
they are lost when the resolution is reduced to 352 x 240.
Max Kernel Resolution
CIF 352 x 240 (recommended)
4CIF 704 x 480
Megapixel 1280 x 1024
Full Resolution Full resolution recorded from the camera
Warning: Increasing the Max Kernel Resolution will result in increased CPU usage. Please
monitor the CPU usage closely.
Perspective Settings
Select Overhead Camera if the camera view is pointed straight down. Select Perspective Camera if the camera
is at an angle. Set the person size box carefully; the accuracy of the person size box will directly affect the
accuracy of analytics rules.
Overhead Camera
Overhead Camera’s are ideal for Video Analytics. Adjust the person size box to show the average size of a
person. The analytics engine uses the person size box when it is deciding if an object is a person or a vehicle.
Car size is automatically determined relative to the person size.
Perspective Camera