Setting Up the Color to Greyscale Image Filter Tool

Once the tool has been added, you will need to configure the region that will define the area of the image that you wish to enhance.

Position the region so the boundaries only enclose the area of the image that you want filtered - if the region encompasses areas that you don't want filtered, it may produce inaccurate results. To help the performance of the tool, create smaller regions; larger regions take longer to inspect. If you're not using a fixture, ensure that the area of the image to be filtered is present in roughly the same location in every image.
Press the OK button to confirm the region (press the Cancel button to not add the tool to the job).
With the tool initially configured, load several images and adjust the tool's parameters, as needed, to compensate for your expected ranges of variations.
Finally, if desired, use the tool's Input/Output properties to share tool data between other tools and/or other external devices.