Gravity erosion observation system and method based on oblique photography and multi-source data fusion

Abstract

The application discloses a gravity erosion observation system and method based on oblique photography and multi-source data fusion. The slope model preparation device of the system constructs a test model soil body with a near-natural state. Artificial rainfall is used to simulate a rainfall process. A soil moisture content monitoring system and a topographic evolution monitoring system are coupled with sensing and photogrammetry technology to realize high-frequency synchronous monitoring of soil moisture content and topographic evolution data, so that the response process of water infiltration and gravity erosion is revealed. A data processing system performs timestamp alignment and multi-source data fusion analysis. The method constructs a test model soil body with a near-natural state through a layered test model soil body construction process and dry-wet cycle. Artificial rainfall is applied, and multiple systems are simultaneously started to collect data. Through three-dimensional reconstruction, point cloud registration and DEM differential quantification of topographic evolution, correlation analysis of the erosion process is performed. The application realizes high-frequency monitoring, high-precision topographic change quantification and multi-parameter synchronous correlation analysis, and realizes real-time quantitative observation.

Images