Table Of Contents

Learn Contour Pattern (G Dataflow)

Last Modified: June 25, 2019

Creates a description of the template image to search during the contour matching phase.

This description data is appended to the input template image. During the matching phase, the description data is extracted from the template image and used to search for the template in the inspection image.

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image in

Reference to the template image to search in the inspection image during the matching phase.

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learn setup data

String that contains information obtained from the Setup Learn Contour Pattern node.

If this input is not connected, the node uses default parameters during the learning phase.

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learn mask

Optional mask image.

This image must be a U8 image. The node learns only those pixels in the source image whose corresponding pixels in the mask are zero. Non-zero pixels are ignored. Do not set this parameter to learn the whole image.

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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

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template image out

Reference to the template.

This template image contains the data that defines the template pattern for the matching phase.

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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


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