Traditional village building roof damage identification and damage rate calculation method

The invention discloses a traditional village building roof damage identification and damage rate calculation method. The method comprises the following steps: acquiring a traditional village remote sensing image picture; making a training set to construct a damaged roof instance segmentation model; inputting a traditional village remote sensing image picture to be segmented into the damaged roof instance segmentation model to obtain an instance segmentation result; defining a mask range of the damaged roof in the instance segmentation result to perform super-pixel segmentation, and extracting a super-pixel sub-block image of a single damaged roof; inputting the sub-block images into an SVM classifier, and identifying three categories of damaged areas, non-damaged areas, courtyard areas and courtyard areas of the sub-block images; and calculating the value of the sum of the pixel points of the damaged area sub-block image and the pixel points of the damaged area sub-block image and the non-damaged area sub-bl