SPE-diff: A Physical Prior Guided Conditional Diffusion Model for Unsupervised High-Spatial-Resolution HSI Reconstruction
Hyperspectral images (HSIs) suffer from low spatial resolution, long revisit intervals, limited swath width, and scarce data, whereas multispectral images (MSIs) excel in these aspects. Spectral super-resolution (SSR) of MSIs has thus become a mainstream approach to obtain HSIs with high resolution and wide coverage. H...