Multiscale Medical Image Fusion in Wavelet Domain

Hindawi Limited - Tập 2013 Số 1 - 2013
Rajiv Singh1, Ashish Khare1
1Department of Electronics and Communication, University of Allahabad, Allahabad 211002, India

Tóm tắt

Wavelet transforms have emerged as a powerful tool in image fusion. However, the study and analysis of medical image fusion is still a challenging area of research. Therefore, in this paper, we propose a multiscale fusion of multimodal medical images in wavelet domain. Fusion of medical images has been performed at multiple scales varying from minimum to maximum level using maximum selection rule which provides more flexibility and choice to select the relevant fused images. The experimental analysis of the proposed method has been performed with several sets of medical images. Fusion results have been evaluated subjectively and objectively with existing state‐of‐the‐art fusion methods which include several pyramid‐ and wavelet‐transform‐based fusion methods and principal component analysis (PCA) fusion method. The comparative analysis of the fusion results has been performed with edge strength (Q), mutual information (MI), entropy (E), standard deviation (SD), blind structural similarity index metric (BSSIM), spatial frequency (SF), and average gradient (AG) metrics. The combined subjective and objective evaluations of the proposed fusion method at multiple scales showed the effectiveness and goodness of the proposed approach.

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Hindawi Limited

Tập 2013 Số 1

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