Set Calibration Axis (Set Calibration Axis) (G Dataflow)

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Last Modified: June 25, 2019

Assigns coordinate system information to a calibration template image. Use this instance with a point distance calibration, when the image is not distorted, and the origin of the calibration axis is within the image.

Inputs/Outputs
Compatibility

calibrated image in

Reference to the template image to use for calibrating your system.

calibration axis info

Input that defines a reference coordinate system for the real-world coordinates.

origin pixel

Origin of the reference coordinate system, expressed in pixel units.

angle relative to horizontal (deg)

Angle of the x-axis of the real-world coordinate system, in relation to the X-axis of the previously set calibration axis.

For distortion model and microplane calibrations, the horizontal is expressed by a row of circle centers. For perspective calibration, the angle is relative to the implicit calibration axis that was defined when learning the calibration. The reference points define the implicit calibration axis.

axis reference

Direction of the coordinate system.

The axis reference can be direct or indirect.

error in

Error conditions that occur before this node runs.

The node responds to this input according to standard error behavior.

Standard Error Behavior

Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

error in does not contain an error	error in contains an error

If no error occurred before the node runs, the node begins execution normally. If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.	If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Default: No error

calibrated image out

Reference to the output image.

error out

Error information.

The node produces this output according to standard error behavior.

Standard Error Behavior

error in does not contain an error	error in contains an error

If no error occurred before the node runs, the node begins execution normally. If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.	If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

Web Server: Not supported in VIs that run in a web application

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