OpenGPL: Multimodal Open-Set Recognition via Dual-Level Pseudo-Unknown Generation and Positive–Negative Prompt Learning
The multimodal fusion of hyperspectral image (HSI) and light detection and ranging (LiDAR) data has advanced remote sensing (RS) classification. However, existing methods are mainly based on the closed-set assumption and are thus less effective in real-world open-set scenarios where unknown categories may appear during...