Realistic 3D Reconstruction of Traffic Accident Scene Based on UAV Oblique Photogrammetry Technology
The on-site investigation of traffic accidents in China mainly relies on two-dimensional exploration methods such as camera photographing,ruler measuring and hand-painted scene map.The works including photographing,fixing and position measurement of key trace material evidence are often manpower and time consumption.However,long-term scene investigation will occupy the accident section and even interrupt traffic,which will easily lead to secondary traffic accidents.To address the problem of low efficiency and difficulty in scene investigation work of road traffic accident using two-dimensional surveying methods,the unmanned aerial vehicle(UAV)oblique photogrammetry technology is introduced to achieve efficient and comprehensive scene surveys.This method utilizes consumer-grade UAV to capture high-resolution scene photos with location information through aerial photography.These photos are then processed by three-dimensional reconstruction,resulting in the digital reconstruction of the accident scene.The effectiveness of the digital reconstruction is evaluated in terms of reconstruction precision,reconstruction effect,and operation duration.Experimental results demonstrate that for the accident scene with an area of 20 m×30 m,the merging and reconstruction of photo sequences taken at different aerial heights can achieve centimeter-level precision in dimensional measurements,with a relative error of+1.6 cm for a 30 m road distance.The reconstruction results exhibit a true three-dimensional effect,which clearly displays road marks,scattered objects,and more.Moreover,the scene operation duration can be shortened to less than 5 minutes.This method realizes the digital reconstruction of three-dimensional scene at traffic accident sites,replaces traditional photo-based surveying methods,significantly improves scene investigation efficiency,and facilitates the rapid processing of traffic accident scenes.
scene investigationtraffic accidentrealistic 3D reconstructionoblique photogrammetryunmanned aerial vehicle(UAV)
万方数据
维普
