Sony SNC-EMX Serie Manuel D'utilisation page 64

Network camera
Click Default to set the lens to its default position.
Zoom
(only for AVF lenses)
Use the slider to adjust the optical zoom of the lens.
Focus
(only for cameras with motorized focus adjustment)
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Positioning
The Positioning feature describes the location of the camera and the perspective in the
camera's field of view.
Perspective information is essential to Video Analytics, as it enables the system to
compensate for the illusory smallness of distant objects.
Only through use of perspective information is it possible to distinguish objects such as
persons, bicycles, cars and trucks, and accurately compute their real size and speeds as they
move through 3D space.
However, to calculate perspective information accurately, the camera must be directed at a
single, flat horizontal plane. Multiple and inclined planes, hills, stairs can falsify perspective
information and produce incorrect object information such as size and speed.
Mounting position
The mounting position describes the perspective information that is also often called
calibration.
In general, the mounting position is determined by the parameters of the camera such as
height, roll angle, tilt angle, and focal length.
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.
Select the appropriate mounting position of the camera. Dropdown options only applicable to
SNC-HMX cameras.
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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.
Sony Corporation
Check the IR-corrected lens box to have the same focus positions for day and night.
– To adjust the focus position separately for day and night uncheck the IR-corrected
lens box. Select the Day/night mode (Color or Monochrome) in the Configuration /
Camera / ALC menu; the relevant focus position slider is activated.
The lens type is displayed; if applicable, select the lens type.
To autofocus the lens click either Full Range or Local Range:
– The motorized automatic back focus process runs through either the full range or the
local range.
– The focus position, state and indicator are shown.
If the IR-corrected lens box is unchecked, select the other Day/night mode and readjust
the focus for this mode.
Ceiling
Custom
Wall
User manual
Configuration | en 65
2019-07 | V01 | DOC