Rockwell Automation 5370-CVIM2 Module - Manual (Page 326)

Chapter 7
Inspection Tools
7–88
The pick and place procedure for the circular AOI is comparable to the
procedure for circular gages, while the pick and place procedure for the
destination is the same as for rectangular windows. For details, refer to
Chapter 5, Pick and Place Functions.
NOTE: The destination should always be configured with the vertical axis
longer than the horizontal axis, since the unwrapped image data is displayed
vertically. The aspect ratio of the destination should be adjusted as needed to
optimize the appearance of the part or item being inspected.
In operation, the arc ring image tool processes (and “unwraps”) the image
area lying between the inner and outer rings of the AOI, then displays the
unwrapped and processed image vertically in the destination.
Figure 7.71 illustrates using a arc ring image tool to “unwrap” a circular
array of alpha characters. Note that the image data is unwrapped, always
starting at the end of the circular AOI shown in the figure, and displayed in
the destination from the top down.
Figure 7.71 Example: Arc Ring Image Tool
In this example, the circular AOI is centered over a circular array of alpha
characters, and the destination is positioned alongside. The result in the
destination is a linear array of alpha characters, starting with letter “A.”