Calibration method, device, system and storage medium of data acquisition system

Abstract

The present invention provides a calibration method, device, system and storage medium of a data acquisition system. The method acquires multiple frame images captured by a photographing device in the calibration area by selecting the calibration area, and determines the corresponding object space points in the frame images. feature points with the same name to form a pair of feature points with the same name; according to the pair of feature points with the same name, the calibration parameters of the shooting device are determined. By determining the control plane in the calibration area, the fitting plane is fitted according to the laser point cloud collected by the scanning device; according to the matching relationship between it and the control plane, the calibration parameters of the scanning device are determined. According to the GNSS differential data, INS data, and odometer data of the POS system and the base station, the trajectory data of the POS system movement is determined; the target trajectory data is selected on the trajectory data according to the calibration area and the calibration point is determined on it, according to the adjacent calibration points The distance between them and the pulse number of the odometer of the POS system between adjacent calibration points determine the odometer calibration parameters.

Description

technical field [0001] The invention relates to the field of map surveying and mapping, in particular to a calibration method, device, system and storage medium of a data acquisition system. Background technique [0002] For the external calibration of the panoramic camera, in the prior art, the manual construction of an outdoor calibration field or the method of using laser point cloud feature points to provide external control information is often used. However, the construction and maintenance of the outdoor calibration field consumes a lot of manpower and material resources, and can only The external calibration of the panoramic camera can only be realized in the calibration scene, which is not flexible enough. Since the point cloud feature points are obtained by scanning with a laser scanner, the accuracy of the laser point cloud itself is limited by the scanning accuracy of the scanner. At the same time, the extraction of point cloud feature points usually requires man...

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a calibration method, device, system and storage medium of a data acquisition system to solve the data used for parameter calibration existing in the prior art, the acquisition method is not flexible, and there are many interference factors, resulting in low calibration efficiency; or use Due to the limited accuracy of collected data for parameter calibration, the technical problem of low calibration accuracy

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