Hardware manual

Pinpoint Pattern Find™ Impact Reference Guide
Datalogic Automation Inc. 3-86
Scale Range Step The value to use for the Scale Range Step Type property when Fixed
Steps is selected. A typical value is 0.1. So, for example, a Scale Range
of 0.5,1.5 is covered by 0.1 steps from 0.5 to 1.5 (0.5, 0.6 … 1.4, 1.5).
Minimum Match
Score
The tool passes if a pattern is found in the Search region that has a
match score greater than or equal to this value (0 to 100). This value
also determines which found patterns pass or fail.
Model Reference
Origin Placement
Train Region Center: The output origin is located in the center of the
train region
Train Region Upper Left Corner: The output origin is located in the upper
left corner of the train region
Use Model Reference Origin: The output region is relative to the Model
Reference Origin. Drag the Model Reference Origin to the desired point
on the image and then retrain the tool.
Model Reference
Origin
This origin is used when the Model Reference Origin Placement property
is set to Use Model Reference Origin.
Number To Find This property is a counter, it does not determine whether the tool passes
or fails. The tool searches the image for all pattern matches, then reports
the location and score of all the found matches, up to the Number to Find
property value. When multiple matches are found, they are listed in the
corresponding passing or failing output property. The tool passes if it
finds at least one pattern with a match score greater than the Minimum
Match Score.
Increasing this value can increase the tool’s execution time.
Algorithm Type The type of pattern search to use.
Edge Match: This type is generally faster and will work for most applica-
tions.
Correlation: This type is slightly slower. If the pattern does not include
many well-defined edges, use this type. See “Algorithm Type” on
page 3-91.
Pattern Model Use this input to link a pattern from another Pattern Find tool for sharing
or to modify a pattern during runtime using a Data Set tool.
Maximum Model
Memory (MBytes)
The maximum amount of memory to use to create and store the pattern.
Patterns can be large if many scale and angle steps are used. If the
vision program is running out of memory, try reducing this number. This
will increase the tool’s execution time. The Model Memory Used output
contains the amount of memory currently being used.
Position Accuracy Fast Pixel-Level Accuracy: The tool uses complete pixels to find edges.
The tool will run faster with this setting.
Subpixel Accuracy: The tool uses subpixel (1/8 pixel) accuracy to find
edges. The tool runs more slowly using this setting.
Enable Image Edge
Points Output
If True, a list of all the edge points found in the Find ROI are put in the
Search Image Edge Points output property. Enabling this input causes
the tool to take more time, but it helps when you are debugging problems
and configuring edge detection settings.
Input Name What it is