Power transmission line segmentation method and system based on key point detection

The invention provides a power transmission line segmentation method based on key point detection, and the method comprises the steps: S1, constructing two layers of marked images through employing a sample image containing a power transmission line, and obtaining a normalized tag image; s2, constructing a weighted focus loss function for predicting a soft label graph of the power transmission line; s3, constructing a regression loss function to predict the coordinate offset between the key points; s4, fusing the weighted focus loss function constructed in the step S2 and the regression loss function constructed in the step S3, and obtaining and training an overall network model; and S5, extracting the power transmission line in the input image by using the overall network model. The power transmission line segmentation method based on key point detection has the beneficial effects that accurate positioning of the power transmission line is realized by adopting a key point detection and point connection line