Table Of Contents

Threshold (Threshold (Fixed)) (G Dataflow)

Last Modified: June 25, 2019

Applies a threshold to an image.

connector_pane_image
datatype_icon

image src

Reference to the source image.

datatype_icon

image dst

Reference to the destination image.

datatype_icon

range

Cluster specifying the threshold range.

datatype_icon

lower value

Lowest pixel value used during a threshold.

Default: 128

datatype_icon

upper value

Highest pixel value used during a threshold.

Default: 255

datatype_icon

replace value

Value used to replace pixels between the lower value and upper value.

This operation requires that keep/replace value? is TRUE.

Use a binary palette when you plan to visualize an image to which a threshold has been applied in replace mode. However, which palette to use for visualization depends on the value of replace value. For example, the visualization of a threshold image could be performed with a gray palette. However, in this case it is advised that you use a replacement value of 255 (white) to see the threshold image better.

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

keep/replace value?

keep/replace value? determines whether to replace the value of the pixels existing in the range between lower value and upper value.

True Replaces pixel values between lower value and upper value.
False Keeps original pixel values between lower value and upper value.

Default: True

datatype_icon

image dst out

Reference to the destination image.

If image dst is connected, image dst out is the same as image dst. Otherwise, image dst out refers to the image referenced by image src.

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