Fsl-unet: Full-scale linked unet with spatial–spectral joint perceptual attention for hyperspectral and multispectral image fusion This is the code of Wang X, Wang X, Zhao K, et al. Fsl-unet: Full-scale linked unet with spatial–spectral joint perceptual attention for hyperspectral and multispectral image fusion[J]. IEEE Transactions on Geoscience and Remote Sensing, 2022, 60: 1-14.