Patent ID: 6359644
Filing Date: 2002-03-19
Classification: A61B,G01B,H04N

Abstract:
An apparatus for determining the size of a target object viewed with a video imager, said apparatus comprising:a lens system having selected optical characteristics; an imaging means for detecting an image, said image including the target object; a video display means to display said image; an image overlay means for selecting the target object in said image in said video display means, said image overlay means providing pixel data; a focusing means, said focusing means having a focus motor, said focus motor having a servo feedback, said focus motor servo feedback providing focus data; a zoom means, said zoom means having a zoom motor, said zoom motor having a servo feedback, said zoom motor servo feedback providing magnification data; and, calculating means for calculating the size of the target object, whereby the size of the target object is calculated by mathematically manipulating said optical characteristics, said focus data, said magnification data, and said pixel data.