Research And Implementation Of Landslide Monitoring System Based On Image Processing

There are so many mountains in China,the landslide geological hazards occur frequently,which pose a great threat to the safety of people's lives and property.The formation of landslide is the process that slopes deform from gradual change to sudden change,which usually occurs in natural mountains and slopes formed by human activities,such as highway slope,dam,building foundation pit,etc.Practice has proved that monitoring the hidden danger area is the most effective means of disaster prevention and control.Nowadays,the research of landslide monitoring technology is developing towardsre the direction of high precision,instantaneity and automation.The existing landslide monitoring scheme is difficult to fully meet the needs of monitoring performance and cost.In this research background,based on photogrammetry,combined with sensor technology and image processing technology,this paper designs and implements a landslide monitoring system based on image processing.The main contents and achievements of this paper are as follows:(1)In the aspect of technological innovation,This paper presents a patented method of surface displacement measurement.By installing a monitoring sensor on the slope surface,the monitoring terminal periodically performs image acquisition and data processing tasks,and uses the principle of reference object to analyze the accurate value of sensor's pixel offset and convert it into the actual displacement,so as to realize the long-distance accurate measurement of slope surface displacement.(2)In the aspect of accuracy and stability,the monitoring sensor is designed to avoid complex calculation and the corresponding high-precision image processing algorithm is implemented to meet the monitoring requirements in complex environment.The image processing algorithm combines with the high-precision centering algorithm in astrometry,and introduces the target detection and image superposition technology,which improves the measurement accuracy and system stability to the greatest extent from the software level.The measurement accuracy ofthe system within 300 meters is ±(0.5-3.6)mm,this meets the requirements of major landslide monitoring point error : ±(3-6)mm,which is specified in the engineering measurement specification.(3)In terms of system function improvement,we have realized embedded monitoring terminal and visual monitoring cloud platform.Monitoring terminal writes equipment control program and data processing program to realize automatic monitoring and data real-time upload task.The monitoring cloud platform includes data visualization system and intelligent management system,which respectively realizes the visual analysis of monitoring data and the remote management of the project.