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. 2023 May 11;13(10):1696. doi: 10.3390/diagnostics13101696

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© 2023 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Fusion process. Some examples of (1) CT image alone, (2) PET image alone, (3) fusion of laplacian pyramid (LP), (4) ratio of the low-pass pyramid (RP), (5) curvelet transform (CVT), (6) sparse representation (SR), (7) nonsubsampled contourlet transform (NSCT) + SR, (8) bilateral cross filter (BCF).