Method for detecting defects in pipeline trenchless repair process based on CCTV technology

The invention relates to the technical field of image data processing, and provides a method for detecting defects in a pipeline trenchless repair process based on a CCTV technology, and the method comprises the steps: obtaining an original pipeline image; acquiring an edge area according to the original pipeline image; acquiring a linear feature coefficient according to the edge region; obtaining a target edge curve according to the linear feature coefficient; obtaining a region of interest according to the target edge curve; acquiring a local highlight coefficient according to the region of interest; obtaining a concentric curvature isolation degree according to the local prominence coefficient; obtaining a deformation index according to the concentric curvature isolation degree; and obtaining a deformation defect detection result based on the deformation index by using an Otsu threshold segmentation algorithm. By analyzing the edge features of the deformation area in the pipeline, the accuracy of the defor