title: A hamiltonian particle method for diffeomorphic image registration.
abstract: Diffeomorphic image registration, where images are aligned using diffeomorphic warps, is a popular subject for research in medical image analysis. We introduce a novel algorithm for computing diffeomorphic warps that solves the Euler equations on the diffeomorphism group explicitly, based on a discretisation of the Hamiltonian, rather than using an optimiser. The result is an algorithm that is many times faster than those considered previously.
authors.affiliation: Massey University, Private Bag 11-222, Palmerston North, New Zealand. s.r.marsland@massey.ac.nz
authors.forename: Stephen
authors.initials: S
authors.lastname: Marsland
authors.forename: Robert
authors.initials: R
authors.lastname: McLachlan
mesh_terms: D000465:Algorithms; D001185:Artificial Intelligence; D007089:Image Enhancement / Q000379:methods*; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D021621:Imaging, Three-Dimensional / Q000379:methods*; D010363:Pattern Recognition, Automated / Q000379:methods*; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D013382:Subtraction Technique