I. Introduction
Land cover change detection (LCCD) with bitemporal remote sensing images has been widely used in practical applications [1], [2], [3], [4]. In such applications, achieving LCCD with multimodal remote sensing images (MRSIs) plays an important role in acquiring land cover change information for natural disaster emergencies because bi-temporal remote sensing images with the same modality are usually unavailable before and after a natural disaster. Therefore, LCCD with MRSIs has become attractive in recent years, and various methods have been proposed [5], [6].