Camera detecting method and device applied to slope safety monitoring

Abstract

The invention discloses a camera detecting method and device applied to slope safety monitoring. O the basis of complexity of the slope, easily recognizable identifier bodies are arranged on the slopeto reflect the slope state; and most important space coordinates of the target array are obtained. A certain number of monitoring target points are set on the slope surface; two slope-surface displacement intelligent high-definition cameras collect slope images; on the basis of a sub-pixel search algorithm, image coordinates of the monitoring points are extracted; and three-dimensional coordinates of the monitoring points are calculated based on a conversion relationship between an image plane coordinate system, a camera coordinate system, and a measurement coordinate system and the surface displacement of the slope is identified. Therefore, the camera detecting method and device have advantages of having high feasibility and being easy to implement.

Description

technical field [0001] The invention relates to the technical field of image processing, in particular to a camera detection device and method applied to slope safety monitoring. Background technique [0002] Since the 1990s, with the development of my country's economic construction, the requirements for road traffic have become higher and higher. Due to the limitations of my country's topography, geological conditions and road alignment, slope problems caused by high filling and deep excavation have become very common. Once a slope disaster occurs, the consequences will be very serious. Deformation is the most significant parameter that characterizes the slope change, and it can best reflect the change status and development trend of the slope. If the displacement of the slope can be accurately monitored and the development trend of the deformation can be predicted, relevant measures and countermeasures can be taken as early as possible to minimize the loss caused by the...

AI Technical Summary

Problems solved by technology

If the obvious characteristic part of the marker is just missing, the expected effect of slope detection will not be achieved

Secondly, the resolution of the point cloud is related to the distance from the camera. If you look at the marking points at a close distance, you may not be able to see them clearly. You can only see a rough picture if you pull them far away. In this way, the 3D slope model established through the point cloud is consistent with the actual situation. easy to make mistakes

In addition, after extracting the parameters of the identification points from the real-time monitoring screen, the patent needs to establish a 3D slope model first, and then extract the feature points from the pictures taken by the monocular camera and then substitute them into the 3D model. The calculation efficiency and accuracy are affected by the 3D slope model. great influence

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