High Performance Deformable Image Registration Algorithms for Manycore Processors

Chapter 2

Unimodal B-Spline Registration

Information in This Chapter:

• Overview of B-spline registration

• Optimized implementation of the B-spline interpolation operation

• Computation of the cost function gradient and optimization of the B-spline coefficients

• Design of GPU kernels to perform the interpolation and gradient calculations

• Performance evaluation

2.1 Introduction

B-spline registration is a method of deformable registration that uses B-spline curves to define a continuous deformation field that maps each and every voxel in a moving image to a corresponding voxel within a fixed or reference image (Rueckert et al., 1999). An optimal deformation field accurately describes how the voxels in the moving image have been displaced ...