Rockwell Automation 5370-CVIM2 Module - Manual (Page 64)

5 Chapter Chapter 3
Image Acquisition Parameters
3–25
Figure 3.17 Performing Scale Computation to “Real World” Measurement Units
Entering Scale Value (Absolute Mode Only)
For applications in which the scale value can be calculated on the basis of
specific lens sizes and settings, and where the exact relationship between
pixels in the image field and “world units” values can be determined, you can
select the
Absolute calibration mode can enter the scale values directly into
the Scale field.
Thus, if you determined that 382.983 pixels in the image field was equivalent
to 2.000 inches (to borrow from the example in Figure 3.17), you would
divide 2.000 by 382.983 to calculate the scale value (0.0052221, in this case)
and enter that value directly into the
Scale field, as shown in Figure 3.18.
Figure 3.18 Example: Entering Predetermined Scale Value (Absolute Mode)