System and method for large-view-field high-speed motion measurement

Abstract

The invention discloses a system and a method for large-view-field high-speed motion measurement. The method comprises the following steps: acquiring a flight image of an unmanned aerial vehicle in a large view field based on a binocular high-speed camera; real-time accurate position information of the unmanned aerial vehicle in the large-view-field flight process is acquired; a data conversion model is constructed based on the flight graph and the real-time accurate position information of the unmanned aerial vehicle in the large field of view, and calibration parameters are obtained; and measuring the moving target in the large field of view based on the calibration parameters to obtain the motion parameters of the moving target. The accurate position information and the flight image of the unmanned aerial vehicle in the large field of view are obtained to obtain the calibration parameters, the calibration process is simple, time consumption is short, efficiency is high, different heights of the large field of view space can be covered, the moving target of the large field of view is measured based on the calibration parameters, moving target measurement of the whole large field of view space is achieved, and the measurement accuracy is improved. And meanwhile, the measurement process is rapid and efficient.

Description

technical field [0001] The invention belongs to the field of binocular camera calibration, in particular to a system and method for high-speed motion measurement with a large field of view. Background technique [0002] Non-contact measurement is the mainstream trend of static or dynamic parameter measurement of objects at present. The dual-target positioning of the camera is the basis and premise of current optical measurement. The purpose of dual-target positioning is to restore the same object or the same position in the real world and the computer image. Mapping relations. Most of the existing methods of motion measurement in a large field of view are to use a total station for calibration. After obtaining the calibration parameters, the motion measurement of the target is carried out according to the parameter equation. The calibration method is that an object with obvious characteristics is in front, back, left, and right within the field of view. Moving up and down, ...

AI Technical Summary

Problems solved by technology

However, this method is only suitable for calibration and restoration within a certain height range above the ground. It is difficult to place objects above 3m in the on-site calibration environment. On the one hand, it is difficult to erect objects above 10m, and on the other hand, it is difficult to fix them for measurement due to the influence of wind.

In terms of efficiency, the total station calibration method also has the problems of long time consumption and low efficiency. Therefore, after calibration by the total station, it is time-consuming and inefficient to measure the moving target in the field of view, and it is difficult to measure the moving target in the entire field of view. testing and other issues

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