A Scheme for Excavation Displacement Monitoring Based on Image Processing
Geotechnical monitoring is integral part of each excavation project and usually done with manual manner.This study proposes a new monitoring method, which combines with image processing and wireless communication to break traditional one.The scheme uses image sensors to capture the images of the cooperative boards.The camera system is calibrated by Zhang Zhengyou calibration method beforehand.Digital signal processors in the image acquisition module generate the undistorted version of the images by the calibration results and utilize Harris comer detection algorithm to extract grid comers coordinates.Then these coordinates are sent to the data processing center through wireless sensor network.In the data processing center, the computer calculates the real displacement of the target by the extrinsic parameters of the camera.The experiment in this paper proves that the systematic accuracy satisfies the national standard 1.The system realizes the automatic real-time monitoring to excavation works.
Excavation monitoring Displacement detection Image processing Sub-pixel Wireless sensor network
Maoheng Sun Yixin Zhao Wei Jiang Tiantian Feng
Dept.of Information and Communication Engineering,Tongji University,Shanghai,China Dept.of Surveying and Geo-informatics,Tongji University,Shanghai,China
国际会议
上海
英文
1923-1926
2012-10-19（万方平台首次上网日期，不代表论文的发表时间）