Patent ID: 8106905

Claim:
A method of illustrating a three dimensional representation of a structure with a two-dimensional display screen, comprising: collecting a plurality of position data points including: positioning a set of axis electrodes on an exterior surface of the subject; injecting a current between the set of axis electrodes within the volume of the subject; sensing a voltage with the position element based on the injected current; determining an impedance based on the sensed voltage and injected current; determining a first position of the position element within the volume of the subject based upon the determined impedance; and determining a second position of the position element within the volume of the subject based upon the determined impedance; storing the plurality of collected position data points by moving a position element through a volume of a subject to define at least a portion of the volume of the subject; rendering a surface representing an outer extent of an internal wall of the volume of the subject based on the stored plurality of position data points; selecting a region of movement; positioning a virtual camera relative to the selected region of movement at a first virtual camera perspective; positioning the virtual camera relative to the selected region of movement at a second virtual camera perspective; and rendering for display a first perspective display of the rendered surface based on the virtual camera positioned relative to the selected region of movement at the first virtual camera perspective; rendering for display a second perspective display of the rendered surface based on the virtual camera positioned relative to the selected region of movement at the second virtual camera perspective; and changing, based on a selection, a display of a display device between the rendered first perspective display and the rendered second perspective display; wherein storing the plurality of collected position data points includes storing at least the determined first position and the determined second position; wherein the rendered surface representing an outer extent of an internal wall of the volume of the subject is based at least on the determined and saved collected first position and the second position.