Three-dimensional coordinate conversion method and device

Abstract

The invention discloses a three-dimensional coordinate conversion method. The three-dimensional coordinate conversion method comprises the steps of receiving an original three-dimensional coordinate sent by a client; making a half line by using a position point of an original plane coordinate in an original plan area as a starting point, calculating the number of intersections of the half line and boundary lines of all coordinate conversion areas one by one, and using conversion parameters corresponding to the coordinate conversion areas of which the number of intersections is odd as conversion parameters of the original plane coordinate; converting the original plane coordinate into a target plane coordinate according to the conversion parameters of the original plane coordinate; converting an original elevation into a target elevation according to the target plane coordinate and a pre-established pseudo-geoid model; feeding the target plane coordinate and the target elevation back to the client. Correspondingly, the invention further discloses a three-dimensional coordinate conversion device. By adopting an embodiment of the three-dimensional coordinate conversion method, the original three-dimensional coordinate can be automatically converted, and the conversion efficiency and accuracy are increased.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a three-dimensional coordinate conversion method and device. Background technique [0002] According to statistics, nearly 80% of the total amount of information involved in human activities in today's information society is associated with spatial location information. With the development of society, all walks of life have more and more demands for spatial location information. Due to the existence of various coordinate systems and elevation systems, coordinate transformation has become a key link in the determination of spatial position information. [0003] At present, coordinate transformation has been involved in applications in various industries, such as navigation and positioning, resource survey, remote sensing image analysis, urban construction and management, and so on. In the prior art, coordinate transformation can only be performed locally, and the...

AI Technical Summary

Problems solved by technology

In the existing technology, coordinate transformation can only be performed locally, and the operation efficiency is low

Moreover, the user must install the conversion program and parameters locally when applying, and the program and parameters are directly visible to the user, which is not conducive to the confidentiality of the results, and also leads to poor data security and user universality

In addition, in the existing technology, only plane transformation is generally possible. If the normal elevation value needs to be determined, it must be approximated by methods such as elevation fitting, which is difficult to meet the needs of real-time precise transformation of 3D coordinates.

Moreover, the conversion parameters are generally manually selected according to the area where the original plane coordinates are located, which wastes manpower and material resources and is prone to errors

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