The application belongs to the technical field of power distribution line inspection, and provides an insulator crack-
light spot distinguishing method and
system. In aerial unmanned aerial
vehicle inspection, through planning a closed track and synchronous shooting of three
exposure levels, cooperating with a double-
branch detection network, chain geometry topology constraint and one-dimensional multi-flow graph
convolution, the candidate crack detection is realized by using high light /
dark line double-
branch lightweight
convolution to access the double-
branch detection network. The candidate frame is aligned with the disc edge and the three-
exposure local is cropped by
geometric matching, and the multi-dimensional features are extracted. After the saturation mark is used to attenuate the high light channel, the features are assembled into a chain graph in physical order, and the cross-disc coherent dark lines are captured. Finally, the crack probability is output by the full connection layer, the
mirror reflection is suppressed, the real cracks are realized, the
false positives and false negatives are effectively reduced, and accurate basis is provided for power outage maintenance decision.