50
object.
High
amount of
noise in
image
Some scenes contain
large amounts of noise,
which can have an
undesirable effect on
the image analysis
because unwanted
objects are detected in
the image or unwanted
events occur.
To minimize the
noise, reducing the
sensitivity will only
detect visible
objects.
Users can ignore the
noise in the image and
still detect the object in
the scene.
NOTE:
A malfunction may occur under the following conditions.
-
Dark environment.
-
Changes in brightness due to lighting variations or clouds.
-
When a moving object or facility is engaged or overlapped.
-
When directing the camera to a light source (e.g., cars in a tunnel, trains).
-
When a shadow occurs.
-
When trees and plants are shaking in the wind. (When possible, install the camera in a location
free of trees and other plants; when impossible, specify the area as Exclusive Area.)
-
Changes in a dynamic fountain, as the water may go up and down.
-
An environment where reflections occur, such as rivers, lakes, glass, windows, mirrors, etc. (If
possible, install the camera in a location where there are no reflective objects; when impossible,
specify the area as Exclusive Area.)
-
If the object size is less than 5% or more than 40% on the screen.
-
When the brightness changes due to AGC or IRIS operation of the camera.
-
When an object with a minor difference from its background and brightness moves.
-
Bad weather conditions such as typhoon, snow or rain.
-
If the object size changes significantly due to movement toward the camera.
-
When passing behind an object such as a tree.
-
When the movement is very slight.
-
When moving at high speed.
-
If there are too many moving objects, it is difficult to create a background
(for example, a subway platform at commute time).
-
When the image is shaken due to camera movement.
-
When there is a flashing light in the shooting area.
-
If the camera lens is not clear or out of focus.
•
Detection Rule:
Set
VA Event.
Summary of Contents for V8360W Series
Page 94: ...Rev A ...
