Abstract: A method and apparatus for visually rendering a three dimensional structure as an image on a two dimensional display without specialized hardware. The invention renders each object of the structure one at a time on the display in descending order according to a measured distance, i.e., rear to front of the structure, of the object from a predetermined view point. As each object is rendered, depth relationships between the objects are conveyed to users. To reduce the number of computations required for rendering the objects, the present method and apparatus use a reference point to determine the measured distance from the predetermined view point to each object.

Abstract: A calibration and measurement system for a multi-axial device is disclosed which includes a memory for storing a set of test measurement values obtained from the multi-axial device in a substantially uniform field; and a calibration transformation generator for generating from the set of test measurement values to calibrate the multi-axial device, with the set of test measurement values lying on a multi-dimensional surface.