Rockwell Automation 5370-CVIM2 Module - Manual (Page 325)

5 Chapter Chapter 7
Inspection Tools
7–87
Figure 7.70 Example: AOI Window “Modified to Fit” in Image
AOI#1 for
Tool 2
Note that the AOI window may not have the appropriate size or be in the
appropriate position for your application at this point. If not, reposition
and/or resize the window as needed.
An image tool is available in four shapes: rectangle, arc ring, quad, and
perspective. Note that the arc ring, quad, and perspective shapes are active
only when the
Transform image tool operation is selected.
NOTE: The rectangle shape must be selected before the Convolve
operation or any of the image arithmetic operations can be selected.
Rectangle
The rectangle shape is used to create a new image by applying morphology
(and thresholding if the binary mode is used), without any spatial
transformation. It is the only shape allowed for the
Convolve and image
arithmetic operations.
Arc Ring
The arc ring “shape” image tool can perform an “unwrap” spatial
transformation function, which can be used to examine circular features and,
by “unwrapping” them, process them as though they were linear.
An arc ring window consists of a circular AOI and a rectangular
“destination.” The AOI consists of an outer arc and a concentrically
positioned inner arc, with the two ends connected. The arc size (in degrees)
can be increased to 380
°, or decreased to a size (in degrees) that varies with
the radius of the inner arc.
Image Tool Shape