Medical image fusion using two-dimensional discrete wavelet transform

Abstract

An approach to the problem of multimodality medical image fusion is proposed, using 2D discrete wavelet transform (2D DWT). Local image fusion mechanism employing 2D periodic DWT is also presented, which decreases the calculation time and space cost. To evaluate the fusion result, mutual information is employed as a performance measurement. The experiment results demonstrate that the fusion scheme of this study is very well suited for clinical applications, especially for treatment plan when complementary information is needed.