High-resolution three-dimensional model optimization method and system based on elevation data, electronic equipment and readable storage medium

Abstract

The invention discloses a high-resolution three-dimensional model optimization method and system based on elevation data, electronic equipment and a readable storage medium, and the method comprises the following steps: S1, obtaining a high-resolution three-dimensional image pair and a positioning model RPC thereof, and obtaining the elevation data; S2, generating a DSM three-dimensional point cloud corresponding to the high-resolution stereo image pair; S3, registering the DSM three-dimensional point cloud and the elevation data to obtain registration parameters, and optimizing a positioningmodel RPC by using the registration parameters. According to the method, the DSM three-dimensional point cloud corresponding to the high-resolution stereo image pair is generated, and the data registration problem of the two-dimensional image and the three-dimensional point cloud of the high-resolution stereo image is converted into the registration problem between the three-dimensional point clouds, so that the registration problem of high-precision elevation data and a high-resolution satellite image is effectively solved.

Description

technical field [0001] The invention belongs to the technical field of satellite photogrammetry, and in particular relates to a method, a system, an electronic device and a readable storage medium for optimizing a high-resolution three-dimensional model based on elevation data under the condition of no ground control point. Background technique [0002] Satellite photogrammetry is an important means of obtaining geospatial information. At present, the attitude measurement accuracy of most high-resolution satellite images in orbit cannot meet the needs of high-precision uncontrolled positioning, which leads to a high degree of dependence on ground control points for traditional satellite geometry processing. However, there are problems such as high cost and low efficiency in obtaining ground control points; it is difficult to obtain high-precision control points in difficult areas such as forests, deserts, and snow fields; it is difficult to measure ground control points abro...

AI Technical Summary

Problems solved by technology

The present invention converts the data registration problem of the two-dimensional image of the high-resolution stereo image and the three-dimensional point cloud into the registration problem between the three-dimensional point clouds by generating the corresponding DSM three-dimensional point cloud of the high-resolution stereo image, and then effectively Solved the registration problem of high-precision elevation data and high-resolution satellite images, and finally applied it to the optimization of high-resolution stereo models, improving the positioning accuracy of satellite images

Images