Rockwell Automation 5370-CVIM2 Module - Manual (Page 270)

Chapter 7
Inspection Tools
7–32
When you pick the Operation field in the window tool edit panel, the
Window Operation selection panel appears, as shown in Figure 7.28.
Figure 7.28 Window Operation Selection Panel
Table 7.2 lists all of the window operations, along with the applicable
window shapes and mask availability.
Table 7.2 Summary of Window Operations
Window Operation Window Shape Mask?
White pixels All Yes*
Black pixels All Yes*
White contours All Yes*
Black contours All Yes*
Luminance Rectangular and arc ring No
*Not available with a polygonal window
White Pixels; Black Pixels
These two operations count the number of black or white pixels within the
window boundaries. Since the image within the window is binarized, the
workpiece features become either white or black, according to the threshold
settings.
The main purpose of a pixel–counting window operation is to measure the
total area, in pixels, of the specified workpiece feature(s).
Figure 7.29 (page 7–33) is an example that illustrates using a rectangular
window and the white pixel–counting operation to measure the total area of
the 15 white circular features on a black workpiece.
Window Operations