Aiming at the problems of low accuracy,high cost,difficulty in laying static level and high maintenance cost of GNSS system in automatic monitoring of dam surface deformation,this paper uses machine vision technology to monitor dam surface deformation.Laboratory experiment results show that the measurement accuracy of machine vision can reach sub-millimeter level when the distance between the camera and the target is within 100 m,and the horizontal and vertical deformation and displacement accuracy are similar.It can be seen from the error analysis that the distance be-tween the target and the camera has obvious correlation with the measurement accuracy.Environmental factors are im-portant factors that affect the accuracy of remote monitoring,and the machine vision monitoring system is optimized by using the principle of dam sight line.Taking Dalitang Reservoir in Zhejiang Province as a pilot project,real-time monito-ring of dam surface deformation is carried out.The results show that the machine vision technology can fully meet the needs of practical engineering,and the optimized machine vision measurement technology can significantly improve the ac-curacy and stability of monitoring data.
维普
万方数据