Three-dimensional laser panoramic railway line plotting method

Abstract

The invention provides a three-dimensional laser panoramic railway line plotting method to realize surveying and mapping of existing railway lines and facilities, thereby providing a technical supportfor application of three-dimensional laser scanning and moving mapping and surveying to technical transformation, asset investigation and informationized operation management of the existing railwaylines. The method comprises the following steps: step one, carrying out three-dimensional mobile laser railway scanning to obtain a moving trajectory and a moving attitude of a three-dimensional mobile laser scanning system; and carrying out geographic reference processing to obtain three-dimensional laser point cloud data of railway lines and facilities and accurate locations and attitudes of allpanoramic stations to provide a data support for building a three-dimensional laser panoramic data model; step two, carrying out laser point cloud and panoramic image fusion to construct a three-dimensional laser panoramic data model; step three, carrying out visualized browsing of a panoramic image and building a spherical visualized browsing frame of the panoramic image based on characteristicsof the panoramic image spherical model; step four, carrying out line and facility recognition on the panoramic image; and step five, carrying out geodetic coordinate calculation of the lines and facilities.

Description

technical field [0001] The invention belongs to the technical field of railway surveying on existing railway lines, and in particular aims at surveying and mapping railway lines on a three-dimensional laser panorama obtained through three-dimensional laser scanning and moving measurement, so as to realize the survey of the lines and their facilities in the surveying of existing railway lines. Background technique [0002] In order to meet the needs of increasing railway speed and increasing transport capacity, the current focus of railway construction is to carry out technical transformation of existing lines or to add second lines. The technical transformation of existing railway lines needs to be based on a full understanding of the current situation of the railway. How to quickly, efficiently and safely conduct mapping surveys on existing railway lines is very important for the planning, design, construction and operation of technical transformation of existing railway lin...

AI Technical Summary

Problems solved by technology

At the same time, subject to the technical level and sense of responsibility of the on-line personnel, there are errors and omissions in the survey and mapping results, and the verification cost is high, which affects the accuracy of the technical transformation of existing railway lines.

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