computer-vision deep-learning pytorch transformer remote-sensing hyperspectral-image-classification hyperspectral-image-denoising self-attention hyperspectral-unmixing pre-training hyperspectral-datasets foundation-models hyperspectral-image-segmentation foundation-model spectral-spatial-information-fusion hyperspectral-anomaly-detection hyperspectral-target-detection hyperspectral-super-resolution hyperspectral-change-detection remote-sensing-foundation-model