SPEX: A Vision-Language Model for Land Cover Extraction on Spectral Remote Sensing Images. - Dongchen Si; Di Wang 023; Erzhong Gao; Xiaolei Qin; Liu Zhao; Jing Zhang; Minqiang Xu; Jianbo Zhan; Jianshe Wang; Lin Liu; Bo Du 001; Liangpei Zhang 001 (CoRR, 2025)