Open Access Open Access  Restricted Access Subscription or Fee Access

Multiple MRI Image Fusion using Normalized Principal Components of DWT Subbands

R. Vijayarajan, R. Avudaiammal

Abstract



This paper proposes a fusion algorithm based on principal component averaging and discrete wavelet transform for multiple magnetic resonance (MR) images. Principal components are evaluated for the covariance matrix of three or more source images of MR T1 and MR T2 modes. Normalized Eigen values of the covariance matrix of the source images contribute linear weights for the fusion rule. This fusion algorithm provides a meaningful replacement for viewing multiple MR images by means of a composite fused image. Image fusion is carried out for the three and four source image combinations. Performance of the fusion algorithm is evaluated using fusion factor, average quality index and figure of merit. The evaluated metrics sufficiently prove that the proposed fusion method delivers better fusion outcomes for the fusion of four source images.

Keywords


Principal components, DWT, Fusion, MR T1-T2 images

Full Text:

PDF


Disclaimer/Regarding indexing issue:

We have provided the online access of all issues and papers to the indexing agencies (as given on journal web site). It’s depend on indexing agencies when, how and what manner they can index or not. Hence, we like to inform that on the basis of earlier indexing, we can’t predict the today or future indexing policy of third party (i.e. indexing agencies) as they have right to discontinue any journal at any time without prior information to the journal. So, please neither sends any question nor expects any answer from us on the behalf of third party i.e. indexing agencies.Hence, we will not issue any certificate or letter for indexing issue. Our role is just to provide the online access to them. So we do properly this and one can visit indexing agencies website to get the authentic information.