1. A method of tracking comprising: acquiring a first image from an image capture device; defining the first image as a reference image; acquiring a second image from the image capture device; applying, by at least one processor, a translation registration operation to the second image, a similarity registration operation to the second image, and a projective registration operation to the second image to track a pose of the image capture device with respect to the reference image; projecting and registering virtual content over the second image based on the tracked pose to form a combined image; and outputting the combined image to a display.