Hardware manual

Pinpoint Pattern Find™ Impact Reference Guide
Datalogic Automation Inc. 3-90
6. Model Detail Max Memory: The tool can potentially use a large amount of Impact device memory. If
the vision program is running out of memory, set the maximum amount of memory the tool uses for the
pattern. The Actual value is the current amount of memory used for the pattern. If you enter a value
that is less than the current Actual value, and then retrain the tool, the pattern is retrained to use less
memory. However restricting memory usage adds to the tool’s execution time.
7. Reference Point Placement: The tool’s output origin is normally positioned at the center of the Train
Shape ROI. You can also place the origin in the upper left corner of the ROI, or position it manually by
dragging and rotating the blue Reference Origin. Here are three examples.
8. Edge Detection: This is an automatic adaptive threshold setting that adjusts to the content of the cur-
rently trained image. The More setting makes the tool more sensitive so that it detects more edges. The
Fixed setting enables the Threshold slider. With this slider you can set a fixed gradient threshold value
for detecting edges. For example, a value of 20 means that edges that have a contrast of 20% of the
range between black and white will be found. The Fixed setting gives you greater control, but may
require further manual adjustment when you train on a different image or change lighting.
Search ROI and Pass/Fail
1. After the pattern is trained, click the Search ROI and Pass/Fail radio button to configure the Search
ROI. By default, the ROI is a large rectangle that includes nearly the entire image because the Search
ROI must be larger than the Train ROI.
The tool execution time is fastest when you use a rectangular Search ROI that is parallel to the image.
Upper Left Reference Point
Center Reference Point Manual Reference Point