Fast non-rigid image registration using viscous fluid model and B-spline
Viscous fluid based non-rigid registration algorithm is an appropriate method for registering objects with large-scale difference. The core component of the algorithm is to solve the fluid partial differential equations. Usually, iterative methods, such as successive over-relaxation, are employed to obtain the solution, but the computational complexity is very tremendous. To reduce the complexity, a fast method based on fluid model combined with Bspline is presented. Firstly, B-spline is used to model the velocity fields, so that the large number of unknowns are reduced to fewer B-spline coefficients; Secondly, by use of some special attributes of B-spline and fast Fourier transform(FFT), direct inversion for the B-spline coefficients are deduced. Experimental results show that our new method is not only suitable for the large-scale image deformation but also amounts relatively lower computational costs.
RONG Chengcheng ZHOU Jian LUO Limin CAO Guogang
Lab of Image Science and Technology Southeast University 210096, Nanjing, China INSERM U642 LTSI Universit′e de Rennes 1 35042, France
国际会议
上海
英文
2472-2475
2008-05-16（万方平台首次上网日期，不代表论文的发表时间）