无人机倾斜摄影测量技术在桥梁检测中的应用

Application of UAV Tilt Photogrammetry Technology in Bridge Detection

针对传统桥梁病害检测存在工作难度大,安全性低和工作效率低等问题,论文应用倾斜摄影测量技术,通过二次桥底飞行多视角补测,构建三维实景模型,单体化精细修模,解决桥梁侧面和底面严重遮挡而造成建模精度不高和几何校正偏差较大等问题。实现可量测,高清晰度和无死角的高精度桥梁模型,从而完成对桥梁病害的检测评估。通过实际案例实验对比,成果满足检测要求。

In view of the problems of difficult work,low safety and low efficiency in traditional bridge disease detection,this paper applies the tilt photogrammetry technology,through the secondary bridge bottom flight multi-view supplementary measurement,then constructs the 3D real scene model and repairs the model to be monomer and fine,to solve the problems of low modeling accuracy and large geometric correction deviation caused by serious shielding on the side and bottom of the bridge.So as to realize the high-precision bridge model with measurable,high-definition and visible anywhere,and complete the detection and evaluation of bridge diseases.Through the comparison of actual case experiments,the results meet the detection requirements.