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4 Working with PickMaster PowerPac
4.3.9.2 Configuring a geometric model with PatMax
4.3.9.2 Configuring a geometric model with PatMax
Introduction to the geometric model PatMax
PatMax is a pattern location search technology. This tool measures:
PatMax differs from other pattern location technologies as it is not based on pixel
grid representations that cannot be efficiently and accurately rotated or scaled.
Instead, PatMax uses a feature based representation that can be transformed
quickly and accurately for pattern matching.
When creating a pattern the following things should be considered.
Models can be classified with the function Inspection I. A model can either be
defined as accepted or rejected, see
To increase the contrast in images where parts have similar grayscale tone, it is
possible to use color filtering. See
There are several parameters that can be adjusted to make an efficient model. The
configuration is done in the PatMax Model Configuration dialog and the result is
displayed in the PatMax Image and the PatMax Result dialogs:
Illustration PatMax Model Configuration
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Position of the pattern.
•
Size relative to the originally trained pattern.
•
Angle relative to the originally trained pattern.
•
Select a representative pattern with consistent features. Reduce needless
features and image noise. Train only important features. If necessary, export
the image and use an external program to erase noise.
•
Larger patterns will provide greater accuracy because they contain more
boundary points to resolve at run-time.
•
High frequency features are more significant at the outer edges of the pattern.
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Item Properties on page
Using color vision on page
Application manual - PickMaster® Twin - PowerPac
102.
289.
3HAC064218-001 Revision: B
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Troubleshooting
