You mentioned you are pretty new to LabVIEW. Are you aware of the Vision Development Module (http://www.ni.com/labview/vision/)? It has a host of built in functions and algorithms to handle image processing.
I was also able to find a case study discussing the development of a facial recognition system (http://sine.ni.com/cs/app/doc/p/id/cs-14086) and another forum post discussing facial recognition (http://forums.ni.com/t5/LabVIEW/face-recognition-using-labview/td-p/1657028).
Hopefully, this sets you in the right direction. If you have any more specific questions, feel free to post them here.
We've managed to match image patterns already. What we're looking for is how we're going to add genetic algorithm in face recognition.
Take a look at this community example on implementing genetic algorithms in LabVIEW
Convolutional neural networks are currently the best performing solution to facial recognition problems. If you need assistance, we at JKI may be able to help. Drop us a message if interested.