A crack recognition way thru images for natural gas pipelines

摘要

An algorithm for recognizing cracks through images is presented for detection of any crack in inner wall of long-distance natural gas pipeline under complicated environment. This algorithm has low requirement on the image quality, simple pre-processing procedure, takes single continuous image areas as individual part, and carries out fuzzy judgment on cracks by multiple threshold values and crack approaching factors. Experiments showed that the algorithm is simple, of high recognition efficiency and accurate judgment.