Method for measuring soil destabilization comprehensive information based on static monocular camera
A technology of comprehensive information and measurement methods, which is applied in the field of comprehensive information measurement of soil instability based on static monocular cameras, which can solve the problem that video data does not have depth information, and can measure the time, space position and volume of soil damage on slopes. And other issues
Inactive Publication Date: 2018-05-01
INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI
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In the way of soil damage monitoring data acquisition, compared with LiDAR, satellite images, GIS and sensor methods, video data obtained directly by monocular camera has the advantages of low cost, simple implementation and high real-time performance. The video data does not have depth information
In recent years, the method based on the UAV monocular camera shooting video and SfM (Structure from Motion) to restore the three-dimensional image of the landslide has achieved success in the displacement analysis of the landslide, but there is no related method to measure the time and space of slope soil damage. Comprehensive information such as location and volume
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[0018] The invention relates to a method for measuring comprehensive soil instability information based on a static monocular camera, in particular to a method using computer vision to quantitatively measure the time, location and surface area of landslides based on video processing , belonging to the technical field of civil engineering.
[0019] 1. The basic principle of the present invention
[0020] In order to solve the problem of time-consuming, labor-intensive and inaccurate manual measurement of the volume of soil instability such as landslides and collapses in the video, this method uses computer vision to quantitatively calibrate the time, location and surface area of the unstable body by video processing. The pixel (that is, the foreground) at the unstable position in the video captured by the monocular static camera is in a drastic change. This method uses the Gaussian background modeling method to detect the foreground, and the detected foreground area is what...
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A method for measuring soil destabilization comprehensive information based on a static monocular camera includes: obtaining a frame of landslide video image by using the static monocular camera; obtaining a foreground through Gaussian background modeling according to the landslide video image; removing noise from the foreground to obtain a first image; a obtain a destabilized foreground block according to the first image; if the position and the area of the destabilized foreground block are similar to those of the destabilized foreground block in a previous frame, determining that the destabilization belongs to the same destabilization so as to complete the detection and tracking of a destabilized body; recording the destabilizing event of the destabilized body in a database and saving ascreenshot; based on an assumption that a hillside basically conforms to a plane, mapping an area corresponding to the destabilized block to an actual area by using calibrated perspective projection transformation according to the screenshot so as to obtain destabilized surface area. The method combines the method of Gaussian background modeling detecting the foreground with the perspective projection transformation to quantitatively restore the geometric information of the destabilized body.
Description
technical field [0001] The invention relates to the technical field of civil engineering, in particular to a method for measuring soil instability comprehensive information based on a static monocular camera. Background technique [0002] Accurate measurement of various parameters of soil instability, such as time, location and volume, is of great significance to the prediction and mitigation of disasters such as landslides and debris flows. Compared with LiDAR, satellite image, GIS and sensor methods, in the acquisition of monitoring data of soil damage, the direct shooting of monocular camera to acquire video data has the advantages of low cost, simple implementation and high real-time performance. The video data does not have depth information. In recent years, the method based on UAV monocular camera video and SfM (Structure from Motion) to restore the three-dimensional image of the landslide has achieved success in the displacement analysis of the landslide, but there ...
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IPC IPC(8): G06T7/00G06T5/00
CPCG06T7/0002G06T2207/10016G06T5/70
Inventor 郭晓军李泳
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI