There is edu.wpi.first.wpilibj.camera which gives access to the camera. The image processing is found in edu.wpi.first.wpilibj.image. The classes for processing are spread throughout the .image libraries. I know finding ellipses is under MonoImage. For the rest you have to search throughout the files :\
We still didn’t get around to programming the vision yet so I can’t help you any further. Good luck (: