TITLE:
Image Registration Technique Based on a Fast CPD Algorithm
AUTHORS:
Wei Guang Liu, Tian Wang
KEYWORDS:
Point Set Registration, Coherent Point Drift, Distance Threshold Constraint, Gauss Mixture Model
JOURNAL NAME:
Journal of Computer and Communications,
Vol.3 No.5,
May
25,
2015
ABSTRACT:
The Coherent Point Drift (CPD) algorithm which
based on Gauss Mixture Model is a robust point set registration algorithm. However,
the selection of robustness weight which used to describe the noise may directly
affect the point set registration efficiency. For resolving the problem, this paper
presents a CPD registration algorithm which based on distance threshold constraint.
Before the point set registration, the inaccurate template point set by resampling
become the initial point set of point set matching, in order to eliminate some points
that the distance to target point set is too close and too far in the inaccurate
template point set, and set the weights of robustness as
. In the simulation experiments, we make two group experiments:
the first group is the registration of the inaccurate template point set and the
accurate target point set, while the second group is the registration of the accurate
template point set and the accurate target point set. The results of comparison
show that our method can solve the problem of selection for the weight. And it improves
the speed and precision of the original CPD registration.