Large-scale scene engineering geology remote sensing interpretation method based on framed digital image

Abstract

The invention discloses a large-scale scene engineering geology remote sensing interpretation method based on a frame-type digital image, and the method comprises the steps: carrying out the aerial triangulation encryption of data through employing frame-type digital aerial photography data obtained at an engineering geology investigation initial measurement stage, and manufacturing a digital elevation model product through employing an encryption result; and generating large-scale scene model data based on the encrypted camera parameters and accurate image exterior orientation elements, importing the model data and interconnecting the model data with a drawing system, establishing a geological remote sensing interpretation mark, and performing geological remote sensing interpretation in atwo-dimensional and three-dimensional environment interaction association mode. According to the method, a large-scene three-dimensional model product breaks through the limitation of a single imageof traditional aerial photo data on the three-dimensional range, a continuous seamless true three-dimensional model is formed, the expression effect is more vivid, information is richer, the topography and geologic body detail characteristics can be accurately reflected, meanwhile, high-precision aerial triangulation encryption mathematical precision information is reserved, and multi-scale dynamic continuous information extraction can be carried out.

Description

technical field [0001] The invention belongs to the technical field of engineering survey, in particular to a large-scene engineering geological remote sensing interpretation method based on frame-type digital images. Background technique [0002] Remote sensing geological interpretation is the process of obtaining geological phenomena from aerial and aerospace images. Most of them use image data to establish remote sensing interpretation signs of geological bodies or geological phenomena. This technical method has been widely used in regional geological surveys and various engineering geological surveys. [0003] In geological remote sensing surveys, satellite remote sensing images are mainly used for the investigation of regional geological background, mostly using image spectral information, generally with low resolution; aerial photography data image resolution is generally higher than satellite images, mostly based on image texture, shape and other details Characterist...

AI Technical Summary

Problems solved by technology

For different types of data, geological interpretation is currently mainly based on two-dimensional plane orthophotos, but the digital elevation accuracy in the process of orthophoto production is not high enough to easily cause image distortion and landform deformation. The combined 2.5-dimensional viewing scene cannot truly present the characteristics of the surface landscape. Some technicians will also build a single-image pair stereo environment based on aerial photogrammetry. Space for scaling up

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