Traffic Accident Scene Mapping Instrument Based on Active Stereo Omnidirectional Vision

Abstract

A traffic accident site surveying and mapping instrument based on active stereoscopic omnidirectional vision, including an omnidirectional visual sensor with a fixed viewpoint, a laser panorama structured light generator with a fixed central point of light emission, a connecting bracket, used to locate a traffic accident scene and an automatic The GPS sensor that generates the road plan and the microprocessor used to draw the road traffic accident scene map for the image of the omnidirectional visual sensor, the fixed viewpoint of the omnidirectional visual sensor and the fixed luminous center point of the laser panoramic volume structured light generator are at the same On the axis; the microprocessor includes LD light source control unit, video image reading module, camera point location information acquisition module, preset road plane map generation module, orientation information analysis module, on-site video image processing module, and spatial location information of each measurement point Calculation module and on-site accident map generation module. The invention simplifies the complexity of calculation, omits the camera calibration work, has strong environmental applicability, and measures quickly and accurately.

Description

technical field [0001] The invention belongs to the application of optical technology, laser semiconductor technology, photogrammetry technology and computer vision technology in the field surveying and mapping of traffic accident handling. Background technique [0002] Today, most of the traffic police at home and abroad still use a lot of manual work methods in traffic accident scene surveys. Manual work methods mainly rely on traditional methods such as human eye judgment, hand touch, tape measure, and manual drawing. There are mainly defects in the following aspects: 1) In terms of measurement data, the phenomenon of missed measurement, wrong measurement, missed drawing, and wrong drawing occurs from time to time; 2) Various restrictions in the measurement process, traffic accidents occur in rain, snow, dense Foggy weather and night will bring great difficulties to on-site investigation. There are higher requirements for handling traffic accidents on expressways, elevate...

AI Technical Summary

Problems solved by technology

[0007] In order to overcome the shortcomings of the existing surveying and mapping instruments at the scene of traffic accidents, such as complex calculation, poor applicability, and large measurement errors, the present invention provides an active-based system that simplifies the complexity of calculation, omits camera calibration work, has strong environmental applicability, and measures quickly and accurately. Stereo-omnidirectional traffic accident scene surveying and mapping instrument

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