Multimodal medical image fusion can help physicians provide more accurate treatment plans for patients, as unimodal images provide limited valid information. To address the insufficient ability that traditional medical image fusion solutions have in protecting image details and significant information. A new multimodality medical image fusion method (NSST-PAPCNN- LatLRR) is proposed in this paper. Firstly, the high and low frequency sub-band coefficients are obtained by decomposing the source image using NSST. Then, the latent low-rank representation algorithm is used to process the low-frequency sub-band coefficients; An improved PAPCNN algorithm is also proposed for the fusion of high frequency sub-band coefficients. The improved PAPCNN model was based on the automatic setting of the parameters, and the optimal method was configured for the time decay factor
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