3D measurement is performed with a set of two cameras.

Settings such as the region setting or the model registration are made on the image of camera 0 (the perpendicular camera).
The registered measurement region is automatically applied to the image of camera1 (oblique camera) and the height of objects is measured.

See 3D Processing Item Window for how to view the screen display of 3D measurement when the measurement is performed.

To measure height accurately properly with 2 cameras, the coordinates of the cameras must be linked properly. To link the coordinates of two cameras is called [3D coordinate setting].
For how to make the settings for 3D coordinates, see 3D Coordinate Registration.

3D measurement uses the parallax of two cameras to measure the height direction.
To obtain the 3D height using 2D images from two cameras, register a measurement range of the height direction for each processing item used for 3D measurement.

When the height of measurement is changed, it reflects the image of camera1 (oblique camera). To enable measurement even when images shift, the size of measurement region changes laterally by the height measurement range.
Measurement region extends to the left when the upper limit of the height range is enlarged. The measurement region extends to the right when the lower limit of the height range is reduced. Adjust the height measurement range so that the measurement target is placed within a measurable range.

World geometric is actual coordinates in the entire space. Since the measured value is in local coordinates referenced to the position of measured objects, sharing the value with external devices (such as using a robot arm for the operation of measured objects), the value must be transformed into world coordinates. This operation is referred to as "World geometric transformation".

The parameters used for the world geometric transformation are produced by photographing the calibration targets with a camera and performing sampling measurement at several locations. For how to create a parameter for world geometric transformation, see Processing Items List Manual, "[3D Setting: World Coordinates (3D Camera Image)]".

World geometric transformation corresponds to the calibration of 2D measurement. Similar to the setting of 2D measurement, which has an option whether to perform calibration at the time of output for each processing item, it is possible to make a setting for 3D measurement whether to perform world geometric transformation at the time of output.

World geometric transformation is performed during output and the transformed values are output.

World geometric transformation is not performed during output and the coordinate values of the camera image are output.