Aerial image acquisition method and system for unmanned aerial vehicle survey traffic accident scene

Abstract

The invention discloses an aerial image acquisition method and system for unmanned aerial vehicles to investigate traffic accident scenes. The method includes selecting a corresponding low-altitude shooting scheme for traffic accident scenes by UAVs according to whether three-dimensional on-site reconstruction or on-site animation simulation is required. The low-altitude shooting scheme of the accident scene UAV includes but is not limited to the global "bow"-shaped itinerant vertical overhead shooting scheme and the combined shooting scheme. It is formed by superimposing the shooting plan around the layers; according to the selected UAV low-altitude shooting plan, the shooting parameters of the UAV are selected and calculated; according to the selected UAV low-altitude shooting plan and the shooting parameters of the UAV, the traffic accident scene Shooting to get the aerial image sequence of the traffic accident scene. The invention has the advantages of good maneuverability, high efficiency, comprehensiveness and high precision, and can be widely used in the application field of unmanned aerial vehicles.

Description

technical field [0001] The invention relates to the application field of unmanned aerial vehicles, in particular to an aerial image acquisition method and system for unmanned aerial vehicles to investigate traffic accident scenes. Background technique [0002] The traditional road traffic accident scene investigation method is mainly to record the geometric information of the accident scene by the traffic police through simple methods such as measuring distance, observation and judgment, and manual drawing, so as to realize the purpose of investigation. These traditional methods have defects such as low efficiency, poor precision, and the inability to conduct secondary verification on the accident scene, which cannot meet the growing high requirements of people. The method of recreating the traffic accident scene based on the real scene can provide a powerful judgment basis for liability judgment, cause analysis, insurance claim settlement, and judicial appraisal, and genera...

AI Technical Summary

Problems solved by technology

The drawing modeling of the traditional manual measurement method takes a long time and the effect deviates greatly from the actual situation. It can only be used to reproduce the overview of the scene, and many details cannot be displayed.

Both the 3D laser scanning method and the photogrammetry method require the equipment to be able to surround the accident site for measurement, and the movement efficiency is low, and the corresponding equipment is relatively heavy. Generally, it must be loaded on the measurement vehicle, and the surrounding measurement cannot be carried out in most sites.

Most of the existing aerial photography is taken by helicopter, which has defects such as high shooting height, unobvious object features, and poor modeling effect, which are not suitable for reconstruction of road traffic accident scenes.

In addition, there are currently researches on the use of UAVs to shoot the scene, but it is only a simple on-site scanning shot at a certain height, and can only obtain an overview of the scene (ie, the scene map), and it is not yet possible to display the real scene in three dimensions

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