Manual

Table Of Contents
05-2018-A
Ganz GXi Series VCA Interface Manual V3.05.31.18
38 | P a g e
Camera Calibration
Camera calibration is required for the VCA engine to classify objects into different object classes. Once
the camera has been calibrated, the engine can infer real-world object properties such as speed, height
and area and classify objects accordingly.
Camera Calibration Topics:
Calibration Page Elements
Calibrating a Camera Advanced
Calibration Parameters
Vertical Field of View
Measurement Units
Calibration Page Elements
The following describes the purpose of each element of the calibration page. To get started calibrating
straight away, see the Calibrating a Camera topic.
3D Graphics Overlay
During the calibration process, the features in the video image need to be matched with a 3D graphics
overlay. The 3D graphics overlay consists of a green grid that represents the ground plane. Placed on the
ground plane are several 3D mimics that represent the dimensions of a person with the current calibration
parameters. The calibration mimics are used for verifying the size of a person in the scene.
Mouse controls
The calibration parameters can be adjusted as follows:
Click and drag the ground plane to change the tilt angle.
Use the mouse wheel to adjust the camera height.
Drag the slider to change the vertical field of view.