Table Of Contents

Learn Calibration (Learn Perspective Calibration) (G Dataflow)

Last Modified: June 25, 2019

Learns perspective calibration information to correct perspective distortion introduced by a camera that is not perpendicular to the plane of the object under inspection.

connector_pane_image
datatype_icon

image in

Reference to the source image.

datatype_icon

reference image

Reference to the image containing calibration information.

datatype_icon

reference points

Set of reference points to use in learning a calibration. Create the reference points manually or use the Calibration Target to Points - Circular Dots node.

datatype_icon

pixel coordinates

Coordinates of 3 reference points in the image, in pixels.

datatype_icon

X

X-coordinate of the point.

datatype_icon

Y

Y-coordinate of the point.

datatype_icon

Real World Coordinates

Relative locations of the dots in the real world.

datatype_icon

X

X-coordinate of the point.

datatype_icon

Y

Y-coordinate of the point.

datatype_icon

Unit

Unit of the Real World Coordinates.

datatype_icon

Image Size

Size of the calibration template image.

datatype_icon

X

Horizontal size of the image.

datatype_icon

Y

Vertical size of the image.

datatype_icon

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

datatype_icon

calibrated image out

Reference to the output image.

datatype_icon

error out

Error information.

The node produces this output 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.

Where This Node Can Run:

Desktop OS: Windows

FPGA: Not supported

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


Recently Viewed Topics