Ground laser scanning three-dimensional point cloud data registration method

Abstract

The invention discloses a ground laser scanning three-dimensional point cloud data registration method. The method comprises the following steps: establishing a point cloud registration model; and scanning original three-dimensional point cloud data under the relative coordinate system of the excavation surface of the earth material field, and calculating the theta around the Z axis between the relative coordinate system xoy of the registration model and the world coordinate system XOY, so that point cloud registration can be carried out. According to the point cloud data registration method, the registration efficiency is extremely high, a large amount of time can be saved in practical application, and time cost consumption can be reduced for engineering practical application.

Description

technical field [0001] The invention belongs to the technical field of calculating the excavation surface of a soil material field, and in particular relates to a ground laser scanning three-dimensional point cloud data registration method. Background technique [0002] With the rapid development of 3D laser scanning technology, the acquisition of massive point cloud data has become inevitable. The point cloud data scanned by the excavation surface of the soil material field usually requires multi-station and multi-angle scanning to obtain the complete point cloud data of the excavation surface, and the coordinate systems of the point cloud data of each station are independent of each other. It will cause great inconvenience. Therefore, in actual engineering applications, it is necessary to convert the coordinate point clouds scanned by different stations into the same coordinate system through the corresponding coordinate registration algorithm, and convert the relative co...

AI Technical Summary

Problems solved by technology

But traditional coordinate transformation models, such as the Bursa-Wolf model, the Molokinsky model, and the Paradigm model, are complex and difficult to understand based on small rotation angles, three rotation angle factors, and other translation factors. Model

These not only have problems that are difficult to understand in theory, but also have too many parameters, which makes it difficult to obtain the corresponding parameters in practical engineering applications.

Images