1. A system for measuring and modifying at least one model parameter of an object of an image in order to distinguish the object from noise in the image, comprising: a perceived image generator, wherein the perceived image generator produces a first perceived image of the object based on the at least one model parameter; an image-match function, wherein the image-match function compares the first perceived image with a real image of the object; and a parameter adjustment function, wherein the parameter adjustment function adjusts the at least one model parameter so that the perceived image generator produces a second perceived image of the object that more closely matches the real image than the first perceived image.