基于二维行匹配的输电线路双目测距技术研究

Transmission Line Binocular Ranging Technology Based on 2DLine Matching

利用双目测距技术获取外破危险物到输电线路的距离,为之后外破危险程度的判断与线路遭受外破概率的评估提供有力数据信息,从而保障线路安全。针对广角镜头下图像成像畸变严重而导致对极误差大的问题,基于目标检测得到的物体位置信息,创新性地运用局部二维行匹配扫描技术,来降低对极误差带来的影响,增加匹配的鲁棒性。同时将全局图像距离的稠密计算降解为目标物的局部稠密计算,提高了双目测距算法在高分辨率监控图像下的实时性。最后利用图像分割技术改善深度不连续处的误匹配问题,进一步提高了双目测距的准确度。

Binocular ranging technology is used to measure the distance from the external damage hazard to the transmission line,which can provide effective data information for the later judgment of the external damage hazard and the evaluation of the probability of external damage to the line,so as to guarantee the line safety.In view of the large pole error caused by severe image distortion in wide-angle lens,based on the object position information obtained from target detection,the local two-dimensional row matching scanning technology is innovatively used to reduce the impact on pole error and increase the robustness of matching.At the same time,the dense calculation of global image distance is degraded to the dense calculation of local object,which improves the real-time performance of binocular ranging algorithm under high-resolution monitoring images.Finally,the image segmentation technology is adopted to improve the mismatching problem at the depth discontinuity and further improve the accuracy of binocular ranging.