Table Of Contents

Inverse (G Dataflow)

Last Modified: October 25, 2017

Inverts the pixel intensities of an image to compute the negative of an image.

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image src

Reference to the source image.

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image mask

8-bit image that specifies the region of the small image to be copied.

Only pixels in the image src image that correspond to a non-zero pixel in the mask image are copied. All other pixels keep their original values. The entire image is processed if image mask is not connected.

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image dst

Reference to the destination 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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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.

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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.

Inversion Behavior

For 8-bit images, this node performs an 8-bit inversion of the pixel intensities in the [0, 255] range. For 16-bit and floating-point image types, the inversion is performed within the minimum and maximum intensity values found in the image.

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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