Phase-Based Non-Rigid 3D Image Registration - From Minutes to Seconds Using CUDA
Daniel Forsberg, Anders Eklund, Mats Andersson, Hans E. Knutsson · 2011
Abstract. Image registration is a well-known concept within the medical image domain and has been shown to be useful in a number of different tasks. However, due to sometimes long processing times, image registration is not fully utilized in clinical workflows, where time is an important factor. During the last couple of years, a number of significant projects have been introduced to make the computational power of GPUs available to a wider audience, where the most well known is CUDA. In this paper we present, with the aid of CUDA, a speedup in the range of 38-44x (from 29 minutes to 40 seconds) when implementing a phasebased non-rigid image registration algorithm, known as the Morphon, on a single GPU. The achieved speedup is in the same magnitude as the speedups reported from other non-rigid registration algorithms fully ported to the GPU. Given the impressive speedups, both reported in this paper and other papers, we therefore consider that it is now feasible to effectively integrate image registration into various clinical workflows, where time is a critical factor. 1