Eyeon:Manual/Fusion 6/Probe

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Probe

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Probe [-/-]

Image:F6_Icon_Modifier2.png

The Probe Modifier is one of the most versatile modifiers in Fusion. It allows you to control any numeric parameter by the pixel color or luminosity at a certain position or rectangular region of an image.

Think of driving values by the presence or absence of an image or by color values of an image. Using colors to create X Y positions on other controls or measuring graded LUT's to compare values.

It can be applied by right-clicking on a control and selecting "Modify with -> Probe".

Contents




Probe Tab


Image To Probe

Drop the tool of the image you want to probe into this field.


Channel

Select the Channel you want to probe. The usual options are

  • Red
  • Green
  • Blue
  • Alpha
  • Luma


Once a Probe modifier is present somewhere in your comp you can connect other tool's values to it's outputs as well. The Probe allows to connect to it's

  • Result
  • Red
  • Green
  • Blue
  • Alpha

values individually


Position X Y

The position in the image where the probe samples the values from.


Probe Rectangle

By default the Probe only samples the value of a single pixel at it's position. By using the Probe Rectangle mode you can sample from a larger area of pixels based on the Evaluation method.


Width Height Controls

These determine the size of the area to be probed.


Evaluation

Sets how the pixels inside the rectangle are computed to generate the output value. Options are:

  • Average (all pixel values inside the rectangle are averaged)
  • Minimum (The smallest value of all pixels inside the rectangle is used)
  • Maximum (The highest value of all pixels inside the rectangle is used)






Value Tab


Scale Input Black / White

By default the Probe generates the Black Value when the probed area results in a value of 0 (i.e. Black) and it generates it's White Value when the probed area results in a value of 1 (i.e. White). By using this range control you can modify the sensitivity of the Probe.


Black Value

The value that is generated by the Probe if the probed area delivers the result set in Scale Input Black.


White Value

The value that is generated by the Probe if the probed area delivers the result set in Scale Input White.


Out Of Image Value

The value that is generated by the Probe if the probed area is outside the frame boundaries of the probed image. If probing a rectangle, this value will not be generated before the entire rectangle is outside the frame boundaries of the image to be probed.






Tips for Probe (edit)

EyeonTips:Manual/Fusion 6/Probe



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