28 en | Configuration DINION 3100i IR
2024-02 | V01 | DOC
User manual
Bosch Security Systems B.V.
The height of the camera must always be entered manually. Whenever possible, roll angle
and tilt angle are provided by the camera itself. The focal length is provided, if the camera
has a built-in lens.
Tilt angle [°]
Enter the tilt angle if the value is not determined by the camera.
The tilt angle describes the angle between the horizontal and the camera.
A tilt angle of 0° means that the camera is mounted parallel to the ground.
A tilt angle of 90° means that the camera is mounted vertically in bird’s eye view
perspective.
The flatter the tilt angle is set, the less accurate the estimate of object sizes and speeds will
be. The settings must be between 0° and 90°. Estimates are no longer possible when you
have reached 0°.
Roll angle [°]
Enter the roll angle if the value is not determined by the camera.
The roll angle describes the angle between the roll axis and the horizontal plane. The angle
can deviate from the horizontal by up to 45°.
Height [m]
Enter the height in meters of the position of the camera.
The height describes the vertical distance from the camera to the ground plane of the
captured image. Typically the elevation of the mounted camera above the ground.
Focal length [mm]
Enter the focal length in millimeters of the position of the camera if the value is not
determined by the camera.
The focal length is determined by the lens. The shorter the focal length, the wider the field
of view. The longer the focal length, the narrower the field of view and the higher the
magnification.
Sketch
Click to improve the automatic calibration. The Sketch-based calibration window is
displayed.
The Sketch functionality offers an additional, half-automatic calibration method. This
calibration method allows you to describe the perspective in the camera’s field of view by
drawing vertical lines, ground lines, and ground angles in the camera image and entering the
correct size and angle. Use the Sketch functionality if the result of the automatic calibration
is not sufficient.
You can also combine this manual calibration with the values for roll angle, tilt angle, height
and focal length calculated by the camera or entered manually.
Select the Calculate check box to obtain the roll angle, tilt angle, height and focal length
from the sketched calibration elements - vertical lines, ground lines and angles - you have
placed in the device.
Clear the Calculate check box to enter a value manually or to refresh to the values provided
by the device itself.
Assisted calibration with Configuration Manager
Calibration leverages data from the device's internal sensors and/or direct user input.
With Configuration Manager the device can be calibrated using the map-based calibration
feature, which allows fast and easy calibration by marking ground points on the map and
image.
Alternatively, the user can still resort to the Sketch-based calibration to manually input the
calibration values.
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