GRIPis GRaphical Iage Processing. It allows easy creation of 'pipelines' that will allow you to identify objects. It's not apart of your robot code, but is a separate program. After getting things setup, you then have to connect the data from GRIP to your robot software.
Jojoguy10 posted a link for more information:
http://wpilib.screenstepslive.com/s/4485/m/50711