Hardware manual

Contrast Impact Reference Guide
Datalogic Automation Inc. 3-102
The Contrast tool evaluates all of its ROIs as a total group against a common tolerance and provides com-
bined outputs. The Contrast - Multiple ROI tool evaluates each ROI individually, against a common toler-
ance, and provides a detailed list of outputs.
Input Name What it is
Input Image The image being inspected
Tool Origin The tool’s origin relative to the entire image space
Shape List The desired region of the image to search. If no shape is defined, the
entire image is processed.
Grey Level Thresh-
old Type
See “Grey Level Threshold Types” on page 3-68 for more details.
Fixed Threshold
Range
The grey level threshold range for Fixed Threshold Range type (in per-
centage). The parameters are start and end.
Enable In Range
Percent Test
The percentage of pixels with a grey level within the Threshold Range is
calculated. If that percentage falls within the In Range Percent, the tool
passes.
Set In Range Per-
cent
This range is used for the In Range Percent Test.
Enable In Range
Area Test
The area of pixels with a grey level within the Threshold Range is calcu-
lated. If that area falls within the In Range Area, the tool passes.
Set In Range Area This range is used for the In Range Area Test.
Enable Out of
Range Percent Test
The percentage of pixels with a grey level outside the Threshold Range
is calculated. If that percentage falls within the Out of Range Percent,
the tool passes.
Set Out of Range
Percent
This range is used for the Out of Range Percent Test.
Enable Out of
Range Area Test
The area of pixels with a grey level outside the Threshold Range is cal-
culated. If that area falls within the Out of Range Area, the tool passes.
Set Out of Range
Area
This range is used for the Out of Range Area Test.
Output Name What it is
Passed True if input tests are enabled and the conditions are met.
Percent In Range Percentage of pixels in the ROI within the designated grey level range (0
to 100 percent)
Percent Out of
Range
Percentage of pixels in the ROI outside the designated grey level range
(0 to 100 percent)
In Range Area The total area of all pixels inside the designated grey level range (in
square units)
Out of Range Area The total area of all pixels outside the designated grey level range (in
square units)