There are two tools that can be used to locate a defective part: the Cell tool and the Comparison tool.
When either of these tools are selected a region of interest (ROI) is shown. This ROI can be selected, dragged around the screen, and resized. The ROI tells the tool which area of the image to examine.
The Cell tool can be used to highlight a missing component. The example images below show the Cell tool being used to highlight an expected hole in a part. The first image contains the hole but the second one does not. This is an example of how the Cell tool may be used.
The Comparison tool can be used to compare a part to a reference image and highlight any discrepancies between the two. The example images below show a bad part. You will notice that the missing part of the image is highlighted in blue.