基于图像序列的接触网磨损程度三维检测方法

In order to realize the automatic detection of the wearing situation of the straddle type monorail traffic catenary, a 3D detection was proposedfor catenary wireusing image sequences. First,the surface profiles of the moving catenary (relative to the laser and the camera)were obtained by the camera. The tridimensional space model of catenary was established by the disparity image and the depth value of catenary detection area was calculated using the proposed minimizing mean value method. Experiments were designed and carried out to compare the 3D detection method with artificial measurement. Experiment results showed that the proposed3D detection method indicated higher stability compared with the artificial measurement. The absolute difference between the two methods were within 0.5mm. The 3D detection method has certain reliability and accuracy, which can be used for automatic detection of the straddle type monorail traffic catenary wire degree.