The invention belongs to the technical field of
underground pipeline positioning and classification, and discloses an automatic
underground pipeline identification and classification
system. According to the method, a multi-parameter
evaluation system of pipeline contour integrity, pipeline
diameter volatility,
waveform distortion degree and hyperbola deformation condition is constructed, so that the covering condition is comprehensively judged; the covering condition caused by factors such as pipeline overlapping and medium interference is effectively identified, and
leak detection of deep or shielded pipelines is avoided; according to the method, the convex
hull filling rate is used as a judgment basis, the area lower than the threshold value is judged as a misrecognition cavity through quantitative calculation of three-dimensional
data processing software, the situation that an underground cavity is misjudged as a pipeline is avoided, and the
data authenticity is improved; according to the method, inclined secondary scanning is carried out on the suspected covering area, two inclined scanning paths are designed, directional detection of the deep covered pipeline is achieved, the
view angle limitation of traditional vertical scanning is broken through, and the detection success rate in a complex laminated pipeline scene is remarkably improved.