A series of varying background images were placed behind the cursor pattern. As shown in Figure 2, the initial background was a series of solid lines.
These were followed by two series of dashed lines. After the line rastering had concluded, images of the three casting types used in this experiment were underlayed beneath the cursor path.
The lines were removed and the cursor followed the same pattern, overlayed on the castings to simulate the pattern to be used by the participant when inspecting each casting type.