Iterative structure transformation and conditional random field based method for unsupervised multimodal change detection

•A structure transformation is proposed to transform the heterogeneous images to the same differential domain.•A CRF model is designed for multimodal change detection by incorporating the change information based unary potential, local spatially-adjacent neighbor information and global spectrally-similar neighbor information based pairwise potentials.•An iterative framework is used to combine the structure transformation and CRF segmentation to improve the accuracy.