Illegal building detection method and device based on unmanned aerial vehicle, and medium

The embodiment of the invention provides an illegal building detection method and device based on an unmanned aerial vehicle, and a medium. The method comprises the steps of generating a foreground image according to a dual-time-phase image; detecting an interference target according to the foreground image; performing mask sharing processing on the interference target; extracting features of the first mask image and the second mask image to obtain a total time feature; generating spatial context information and channel context information from the total time features through an attention mechanism; fusing the spatial context information and the channel context information of multiple scales to obtain target change information; performing prediction according to the target change information to obtain a target illegal building; interferents can be intelligently eliminated, multi-level effective cooperation is formed, and high-precision, low-false-alarm, intelligent and rapid troubleshooting of illegal buildin