Operation Manual

14 en | IVA 4.0 IVA 4.0
DOC | 4.0 | 2009.06 Operating Manual Bosch Security Systems
4IVA4.0
This chapter provides a description of the program, the configuration and the various IVA 4.0
settings.
For details on configuring IVA 4.0 Flow, please refer to: Section 5 IVA 4.0 Flow, page 49.
4.1 The Basics
The camera 'sees' a selected area. This area is displayed in the Configuration Manager
program as a single, constantly refreshed image. In the Web browser view of the device you
will see a live video preview.
Objects
Objects are typically people or vehicles moving within the area seen by the camera. Objects
can be filtered according to certain properties (size, aspect ratio, direction of movement,
speed, location, color). An alarm event can be generated if objects match certain parameters.
Objects that do not match the criteria you define are filtered out and do not generate an alarm
event.
It is always the center of an object that is relevant for generating an alarm event.
Sensitive Area
The scene that is captured by a camera often includes areas that are irrelevant for alarm event
generation (such as sky). You can reduce the size of the area that is actually analyzed for
motion.
This will make motion detection for the remaining — sensitive — area correspondingly faster
and more effective.
Calibration
If you wish to detect objects correctly according to their size or speed, a link must be made
for each camera position between the size of the real-life situation and the dimensions as they
appear on the camera image. For example, you must tell the software that an object that
appears on the camera image with a height of 50 pixels is around 2 m high in reality. The
camera angle is used to compute object speeds.
For more information, please see the description on calibration (see: Section 4.7.1 Calibration,
page 39).
Field
Fields are polygons that cover a certain area, for example an entrance or the open space in
front of a barrier. These fields are created by you. Objects that move within a field can lead to
the generation of an alarm event.
Line
A line can be compared to a virtual trip wire. Objects that cross a line you have defined in a
pre-defined direction can trigger an alarm event.
NOTICE!
Please note that when using IVA 4.0 for a forensic search in recordings, motion analysis is only
possible in the area that was previously marked as the sensitive area in the recording.
NOTICE!
The unit of measurement display can be adapted so that when the English language user
interface is used, the relevant "imperial measurements" used in the English-speaking world are
displayed (see: Section 7 Display of Units of Measurement, page 59).