Building extraction spectrum residual saliency region migration data enhancement method and system

The invention belongs to the technical field of spatial data processing, geographic object extraction and computer vision, and particularly relates to a building extraction spectral residual saliency region migration data enhancement method and system, and the method comprises the steps: carrying out the saliency detection of a target data set label through a spectral residual saliency detection method in combination with morphological expansion processing; obtaining a building saliency area in the label; and extracting a building target and a surrounding saliency area from the target data set, and migrating the building target and the surrounding saliency area to the original data set to generate a new training sample. Compared with a traditional data enhancement method, the spectrum residual saliency region migration data enhancement method can better keep balance between the number of samples of building categories and the number of background samples, meanwhile, rich context information is provided, and i