Monorail transportation PC rail beam edge detection based on image processing

With the characteristics of PC rail beam in Straddle Monorail Transportation System,a method based on image processing was proposed.Firstly,it was processed the rail beam nature image by homomorphic filtering,which could enhance image contrast and sharpen edge information.Secondly,it was detected edge by canny operator roughly.Lastly,it was adaptively removed interference information and detected pure rail edges by edge tracking,at the same time,it was re-connected broken lines by hough transform,with the goal of optimizing rail edges.Simulation results proved our method could accurately detect the PC rail beam edges,which laid the foundation for rail diagnostic work.