A statistical similarity measure for non-rigid multi-modal image registration
Jiangli Shi, Yunmei Chen, Murali Rao, Jin Seop Lee · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2010
We present a novel variational framework for deformable multi-modal image registration. Our approach is based on Renyi's statistical dependence measure of two random variables with the use of reproducing kernel Hilbert spaces associated with Gaussian kernels to simplify the computation. The popularly used method of maximizing mutual information based optimization algorithms are complex and sensitive to the quantization of the intensities, because it requires the estimation of continuous joint probability density function (pdf). The proposed model does not deal with joint pdf but instead observed independent samples. Experimental results are provided to show the effectiveness of the model.