Video recorder network shooting measurement method and apparatus for large structure attitude and displacement deformation

Abstract

The invention discloses a method and a device for measuring the attitude and displacement deformation of a large structural body through network image pickup of cameras, wherein a camera network is well laid out according to the measuring requirements and the actual conditions. The device comprises a computing control center and network nodes, wherein the network nodes generally consist of attribute blocks and cameras (groups), which are fixedly connected with each other. The method comprises: demarcating camera parameters of measuring base stations at all levels before test, and demarcating relative position attitude parameters between the attribute blocks and the cameras, position attitude parameters of the attribute blocks or the cameras, which are fixedly connected with a measuring reference, relative to the reference coordinate system, and the like; triggering the cameras in real time for image pickup by the control center; and sending data to the control center, resolving the three-dimensional position attitude of an object to be measured relative to the measuring reference through the three-dimensional position attitude between various adjacent measuring base stations, and outputting the measuring result so as to dynamically and precisely measure the spatial structure, the spatial position, the attitude and the deformation of the large structural body in real time.

Description

technical field [0001] The invention relates to the fields of digital camera measurement, computer vision, deformation monitoring, etc., and further refers to the high-precision real-time automatic monitoring and measurement of large-scale structural body attitude and displacement deformation by using the method of camera network camera measurement. Background technique [0002] In practical applications, it is of great value and significance to monitor the attitude, displacement and deformation of large structures in real time and accurately for force analysis, structural modeling, and safety monitoring. [0003] In the civil field, during the construction of subways, tunnels, bridges, and dams, if the surrounding rock deformation or even collapse accidents occur due to geological or construction reasons, it will often cause heavy casualties and property losses. Real-time measurement and monitoring of large structures such as rock deformation. During the construction and o...

AI Technical Summary

Problems solved by technology

[0004] 1. Strict visibility conditions are required. Usually, one instrument can only measure one-dimensional deformation, and multiple measurements with multiple instruments are required to determine three-dimensional deformation;

[0005] 2. Absolute positioning cannot be given while measuring deformation;

[0006] 3. The workload is large, the degree of automation is low, and the real-time performance is poor;

[0007] 4. It is greatly affected by the external environment, and the measurement efficiency is low

Large-scale structures in real situations are generally more complex, and the measurement benchmark and the measured target are often invisible

[0010] In response to this situation, the international patent PCT / CN2007 / 000476 of the applicant discloses a method for measuring the three-dimensional position and attitude of the target without seeing through the broken line optical path, which solves the measurement problem of the (relative) three-dimensional position and attitude of the target without seeing through, but its Only the three-dimensional position and attitude relationship between two points is measured, and the accuracy and reliability need to be further improved

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