Hello Clendon,
Thank you for contacting National Instruments. There is an example that ships with NI-Vision that demonstrates how to learn and search for multiple geometric patterns. Open the Example Finder for LabVIEW, and perform a search for "pattern recognition." Double-click the result that shows up in the keyword hitlist, and a number of examples will show up in the middle portion of the Example Finder window. There will be two examples: Learn Multiple Geometric Patterns Example.vi and Match Multiple Geometric Patterns Example.vi. Open the Learn Multiple Geometric Patterns Example.vi and follow the steps that are on the front panel. This example will show how to load your own templates, and detect objects that match the templates. The other example already has a number of templates defined, and simply detects those objects in a number of images.
Regards,
Mike T
National Instruments