Vehicle collision angle analysis system based on three-dimensional reconstruction technology

Abstract

The invention provides a vehicle collision angle analysis system based on a three-dimensional reconstruction technology. The vehicle collision angle analysis system comprises a data collection module, wherein a three-dimensional laser scanner and a digital camera are utilized for point cloud data collection, the data is more accurate, and mapping processing of pictures is completed; a three-dimensional point cloud data preprocessing module, wherein data de-nosing and data reduced processing are carried out, and original data points which are redundant and have much noise are processed simply; a point cloud reconstruction module, wherein a delaunay algorithm is applied, triangulation is carried out on the data after the preprocessing, and deformed surfaces are reconstructed; a normal vector resolving module which is capable of solving normal vectors of each small triangle after the triangulation; and a vehicle collision angle analysis module which utilizes a least square method to fit a collision angle of a vehicle based on the normal vectors solved by the normal vector resolving module. According to the invention, rough collision angles in traffic accidents such as a vehicle-vehicle collision, a vehicle-human collision and a vehicle-object collision can be analyzed, and ideas are provided for morphological analysis of the traffic accidents.

Description

technical field [0001] The invention relates to the field of close-range photogrammetry and digital image processing, in particular to a vehicle collision angle analysis system based on three-dimensional reconstruction technology. Background technique [0002] Road traffic accidents occur frequently in my country, and the fatality rate of road traffic accidents remains high. Statistics show that in 2013 alone, my country received 5.987 million reported road traffic accidents, involving 198,394 road traffic accidents involving casualties, resulting in 58,539 deaths and direct property losses of 1.04 billion yuan. As the most important link in the legal handling procedures of traffic accidents, traffic accident scene investigation requires timely, rapid, meticulous, complete, objective and comprehensive investigation of the accident scene to provide accurate, fair and objective data and images for subsequent accident handling. It is convenient for the three-dimensional reprod...

AI Technical Summary

Problems solved by technology

At present, domestic and foreign related patents and research on vehicle collisions provide ideas for accident reproduction. There are few studies on how to analyze the angle of vehicle collisions. In road traffic accident identification, research on accident morphology analysis still needs to be improved.

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