Apparatus and methods of determining marker orientation in fiducial registration

摘要

A method for determining an orientation of a base ( 130 ) to which a fiducial marker ( 110 ) is detachably mounted. The method includes the steps of determining the axis of symmetry for the fiducial marker and choosing the determined axis of symmetry of the fiducial marker ( 110 ) as the axis of symmetry of the base ( 130 ).