Detection of damaged buildings based on generative adversarial networks

As one of the most affected hazard-affected bodies in natural disasters, accurate damage information extraction of buildings plays a significant role in post-disaster emergency rescue. Referring to the idea of multi-mode fusion technique, a recursive generative adversarial networks (RS-GAN) method is proposed to automatically detect damaged buildings. In RS-GAN, the workflow of damaged buildings detection is composed of two sub-tasks as follows: building identification before disasters as well as damaged building detection after disasters, which are completed in two GAN branches respectively. Specifically, RS-GAN adds a joint loss function to connect the two GAN branches, making full use of the potential mutual benefit between the two tasks to improve the detection accuracy. In addition, the results of building identification are added to the damaged building detection task to locate potential damaged areas. The method proposed in this paper is an end-to-end model, which can automatically detect damaged buildings without excessive manual intervention. To verify the effect of the RS-GAN model, in this paper, two experiments were set with the Santa Rosa dataset and Missouri respectively. Experimental results show that RS-GAN method has better detection performance compared to other competitive methods, and the overall accuracy and average accuracy on the Santa Rosa data set are 0.90 and 0.86, respectively. © 2022, Surveying and Mapping Press. All right reserved.