Comprehensive information measurement method of soil instability based on static monocular camera
A technology of comprehensive information and measurement methods, applied in the field of comprehensive information measurement of soil instability based on static monocular cameras, can solve the problem that video data does not have depth information, and measure the time, spatial position and volume of slope soil damage And other issues
Inactive Publication Date: 2021-05-28
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 information of soil instability 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] One, 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 instability in video processing. In the video captured by a monocular static camera, the pixels at the instability point (that is, the foreground) are undergoing drastic changes. This method uses Gaussian background modeling to detect the foreground. The detected foreground area is what we are ...
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A method for measuring comprehensive information of soil instability based on a static monocular camera, comprising: using a static monocular camera to obtain a frame of landslide video image; obtaining a foreground through Gaussian background modeling according to the landslide video image; noise to obtain the first image; obtain the unstable foreground block according to the first image; if the position and area of the obtained unstable foreground block and the unstable foreground block of the previous frame are similar, it is considered to belong to the same instability, To complete the detection and tracking of the unstable body; record the instability event of the unstable body in the database and save the screenshot; based on the assumption that the hillside basically conforms to a plane, use the calibrated perspective projection according to the screenshot Transform, and map the area corresponding to the unstable block to the actual area, so as to obtain the unstable surface area. The invention combines the Gaussian background modeling method for detecting the foreground with the perspective projection transformation, and can quantitatively restore the geometric information of the unstable body.
Description
technical field [0001] The invention relates to the technical field of civil engineering, in particular to a method for measuring comprehensive information of soil instability 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. 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 the...
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IPC IPC(8): G06T7/00G06T7/187G06T7/62G06T5/00G06T5/30
CPCG06T7/0002G06T2207/10016G06T5/70
Inventor 郭晓军李泳
Owner INST OF MOUNTAIN HAZARDS & ENVIRONMENT CHINESE ACADEMY OF SCI