Accurate X-corner Fiducial Marker Localization in Image Guided Surgery (IGS)
Thomas Kerstein, Hubert Roth, Jürgen Wahrburg · 2014
In this paper a novel approach for reliable detection and accurate localization of X-corner fiducial markers is presented, which is particularly designed for Image Guided Surgery (IGS). Detection and localization are performed by utilizing basic topological characteristics. In contrast to reflecting planar or spherical markers, X-corner fiducials facilitate not only position measurements with high precision but provide additional information for recognition of geometrical structures composed of several fiducials. The presented approach shows robustness to considerable perspective distortion as well as invariance to illumination changes. Furthermore it offers high computational efficiency and a high level of flexibility for application-specific system design.