Road ground surface line data automatic generation system and method

Abstract

The present invention provides a road ground surface line data automatic generation system and method. The system comprises a laser radar, a data processing system and an inspection and editing system; the laser radar is used for obtaining point cloud data of a ground surface line; the data processing system is used for processing the point cloud data and performing data modeling and elevation interpolation based on ground surface type points in the point cloud data to obtain a ground surface line; and the inspection and editing system is used for drawing the obtained ground surface line in a visual graph environment and superposing LiDAR point cloud and DOM data so as to perform visual inspection and editing on the generated ground surface line. With the system of the present invention adopted, rapid automatic extraction of a design ground surface line can be realized; laser radar measurement and road construction map design integration can be realized; and as for a region with many constructions, a ground surface line generated by using system can reflect the real ground surface information of microtopography more accurately compared with a digital-analog interpolation method.

Description

technical field [0001] The invention relates to the field of surveying and mapping, in particular to a system and method for automatically generating highway surface line data. Background technique [0002] At present, the efficiency and accuracy of obtaining ground line information in highway survey and design are low. The current mainstream method is to use total station or real-time differential positioning technology (rael-time kinematic, RTK) to stake out the middle pile first, and then use RTK to measure the elevation of each cross section. However, this method uses single-point contact measurement, which leads to a slow operation speed. At the same time, due to the limitations of natural conditions such as weather, traffic, and difficult terrain in the survey area, it is easy to cause low accuracy of surveying and mapping results, difficult to guarantee the construction period, and survey costs. increased adverse consequences. Contents of the invention [0003] In...

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Problems solved by technology

However, this method uses single-point contact measurement, which leads to a slow operation speed. At the same time, due to the limitations of natural conditions such as weather, traffic, and difficult terrain in the survey area, it is easy to cause low accuracy of surveying and mapping results, difficult to guarantee the construction period, and survey costs. Increased adverse consequences

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