Research On Slope Displacement Monitoring Technology Based On Close-range Photogrammetry

Slope deformation will bring a certain degree of damage to engineering construction,and monitoring the slope deformation is one of the important means to ensure the stability of the slope.With the update of photography equipment and the advancement of measurement technology,photogrammetry is increasingly used in engineering monitoring.This paper mainly studies a measurement method for realizing slope displacement monitoring based on resolving the photographic baseline component of the space resection,and aims to provide a new solution idea for the reference of relevant scholars.The main research results of this article are as follows:(1)Conduct research on the extraction of artificial marker feature points,use three extraction operators to perform feature point extraction experiments,and compare the extraction effects of each operator to obtain the most suitable extraction operator and the best calculation parameters;(2)Based on the spatial resection method,a new slope displacement monitoring method was studied.A monitoring system was developed using C++.The system can calculate the external elements of photography through six control points to obtain the slope Displacement value of monitoring point;(3)Carry out a slope monitoring simulation experiment,compare the solution result of the monitoring system with the true value of displacement,analyze the cause of the error and debug the monitoring system;(4)The monitoring system is applied to the field measurement of a slope in Gansu.An error recognition point calculation module is added to the monitoring system to facilitate error analysis.