Abstract
Medical image fusion has been used to derive the useful complimentary information from multimodality imaging. The proposed methodology introduces fusion approach for robust and automatic extraction of information from segmented images of different modalities. This fusion strategy is implemented in multiresolution domain using wavelet transform- and genetic algorithm-based search technique to extract maximum complementary information. The analysis of input images at multiple resolutions is able to extract more fine details and improves the quality of the composite fused image. The proposed approaches are also independent of any manual marking or knowledge of fiducial points and start the fusion procedure automatically. The performance of fusion scheme implemented on segmented brain images has been evaluated computing mutual information as similarity measuring matrix. Prior to fusion process, images are being segmented using different segmentation techniques like fuzzy C-mean and Markov random field models. Experimental results show that Gibbs- and ICM-based segmentation approaches related to Markov random field perform over the fuzzy C-mean and which are being used prior to GA-based fusion process for MR T1, MR T2 and MR PD images of section of human brain.
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Authors gratefully acknowledge the help rendered by National Brain Research Centre, Gurgaon, India.
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Bhattacharya, M., Das, A. & Chandana, M. GA-based multiresolution fusion of segmented brain images using PD-, T1- and T2-weighted MR modalities. Neural Comput & Applic 21, 1433–1447 (2012). https://doi.org/10.1007/s00521-011-0730-3
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DOI: https://doi.org/10.1007/s00521-011-0730-3