Biomedical Engineering Reference
In-Depth Information
6.5
Results
6.5.1
Landmark Registration
The first experiment compares the inverse consistency error associated with the
traditional unidirectional landmark thin-plate spline (UL-TPS) algorithm to that
of the consistent landmark thin-plate spline (CL-TPS) algorithm. This simple
experiment is designed to show that the UL-TPS algorithm can have significant
inverse consistency error while this error is minimized using the CL-TPS algo-
rithm. The experiment shown in Fig. 6.4 consisted of matching eight landmarks
in one image to their corresponding landmarks in a second image using both
Figure 6.4:
The location of local displacements at the landmarks points for the
forward, and reverse transformations of images with 100
×
100 pixels. Applica-
tion of the thin-plate spline deformation fields to uniformly spaced grids for the
forward and reverse transformations.
