System for locating relative positions of objects

Details System for locating relative positions of objects System for locating relative positions of objects

G - Physics

01

S

G01S 5/00 (2006.01) A61B 6/02 (2006.01) A61B 19/00 (2006.01) G01S 5/16 (2006.01) G01S 5/30 (2006.01)

Patent

CA 2161126

This system locates and displays the relative positions of one moveable object (12) with respect to a second moveable object (11) in a three-dimensional space. The locations of at least two points reference (14, 16) on the first object (12) and at least three reference points (73-75) on the second object (11) are measurable by position sensors (20, 22, 24) in a predetermined fixed coordinate system (80). From the locations of the reference points (14, 16, 73-75), a computer (36) determines the positions and orientations of the two objects (11, 12) in the fixed coordinate system (80). From the positions and orientations of the two objects (11, 12), the computer (36) further determines the relative position and orientation of the first object (12) with respect to a predetermined local coordinate system in a fixed relationship with the second object (11). The computer (36) causes the display of a graphical representation of the position and orientation of the first object (12) on a graphical model of previously taken image data of the second object (11).

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