Landslide surface image acquisition method and device as well as aerial three-dimensional data acquisition method

Abstract

The invention provides a landslide surface image acquisition method and device as well as an aerial three-dimensional data acquisition method, and relates to the field of aerial photography. According to the landslide surface image acquisition method provided by the invention, an image is acquired by adopting a climbing and photographing manner; a landslide angle and aerial photography information of a target landslide surface are firstly acquired, and then a climbing height between two air strips is determined according to the landslide angle and the aerial photography information; furthermore, the height of each air strip, relative to the landslide surface, is certain, and a plurality of optimized air strips are determined according to the pre-obtained first air strip and the climbing height, so that an aircraft can fly and photograph along the plurality of optimized air strips to obtain a landslide surface image; and the height of each air strip, relative to the landslide surface, is certain, so that the resolution rates of different positions of the landslide surface in the image are the same.

Description

technical field [0001] The present invention relates to the field of aerial photography, in particular, to a landslide image acquisition method and device, and an aerial three-dimensional data acquisition method. Background technique [0002] In recent years, earthquake disasters have occurred frequently in China. The crust in the earthquake area is broken, the ground mountains are broken, and the geological environment is very fragile. The potential landslide geological disaster poses a huge threat to people's life and property in the new resettlement site, and landslide is also one of the main diseases of mountain roads and railways. Among them, a landslide refers to the soil or rock mass on the slope, affected by factors such as river scouring, groundwater activity, rainwater immersion, earthquake and artificial slope cutting, under the action of gravity, along a certain weak surface or weak zone, the overall landslide Or the natural phenomenon of sliding down a slope sc...

AI Technical Summary

Problems solved by technology

[0005] However, when using a camera to shoot, since the camera usually shoots the landslide from the foot of the mountain (the bottom of the landslide) or a fixed point, the imaging resolution and The imaging resolution of the position close to the camera is very different, that is, the accuracy of the photo is unstable, which will cause errors when using the image in the later stage

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