1. A method for performing three dimensional, stereo measurement, comprising: obtaining a sensor image from a sensor providing an image of a scene; providing first and second reference images of the scene that are a stereo pair of images; registering the sensor image with the first reference image; selecting a point of interest from one of the sensor image and the first reference image; and performing a stereo point measurement from the selected point of interest and the first reference image to determine a point in the second reference image that represents a stereo mate of the selected point in the first reference image.