1. A reference indicator patch disposable on an object and capable of being captured in an image by an image recording apparatus adapted to communicate with a computer apparatus, comprising: a substrate adapted to be disposed on the object such that the substrate only covers a portion of the object; and reference means disposed on the substrate such that the reference means is perceivable by the image recording apparatus during the capturing of the image for providing the computer apparatus with an image having a reference therein to permit the computer apparatus to generate data relative to the object.