Abstract:Image fusion principles have been widely used in application of imaging remote sensing as an effective means of synergistic combination of information. Image fusion applied for target recognition should be modeling for each different task. A kind of fusion model for bridge automatic detection in multi-source remote sensing image is proposed in the paper, which is designed based on the character of multi-source data, bridge identity and the background feature in remote sensing images. The results of bridge automatic detection in real images of complex scene prove the model’s validity.