You can set multiple ROIs for certain tools. This is different from non-contiguous ROIs inherited from upstream An upstream tool comes first in the toolchain and its output defines a downstream tool. An upstream tool can have several downstream tools. tools, which are represented by multiple rectangles of the same color, and count as a single ROI The Region of Interest (ROI) is the area of the image where the vision tool operates.. When you set multiple ROIs, each ROI is represented by a rectangle of a different color.

Note: The Pattern tool does not support multiple ROIs.

1. After setting the first ROI according to the previous instructions, click Add Region to add a second ROI.

2. Place the ROI rectangle around the additional part of the image that you want to check, and adjust the ROI settings in the ROI Options panel.

   Note: Every ROI in a multi-ROI setup uses the same rectangle size. This means that if you resize the rectangle for one ROI, every other ROI rectangle is resized to the same size.

3. To add more ROIs, click Add Region again and repeat the process. The tool displays an expandable heading containing the settings for each new ROI in the ROI Options panel, starting with Region 1.

4. If you want to delete ROIs, click Remove Region to remove the last ROI in the list.