Traffic accident on-site mapper based on binocular tridimensional all-directional vision

Abstract

The invention relates to a field mapper of traffic accidents based on binocular solid all-directional vision. The mapper comprises two all-directional vision sensors with the same imaging parameters, a connecting unit and a microprocessor used for data processing and drawing of the field chart of the road traffic accidents on the panoramic picture obtained by the two all-directional vision sensors. The all-directional vision sensor comprises a hyperboloid mirror face, a supporting bar, a transparent glass surface and an image pickup unit; the supporting bar takes the shape of a tapering round platform and the upper end of the supporting bar is fixed in an ostiole at the bottom center of the hyperboloid mirror face, and the lower end of the supporting bar is fixed on an additional lens frame embedded by the transparent glass surface in a mounting hole at the center of the transparent glass surface by screws; the supporting bar is vertical to the transparent glass surface, and the image pickup unit is arranged in the additional lens frame; the mapper automatically measures the coordinate data of related characteristic points, finally, a field record chart, a field scale map, a field section map, a field elevation drawing and a field analysis chart of the traffic accidents are automatically drawn according to the characteristic data.

Description

technical field [0001] The invention belongs to the application of optical technology, photogrammetry technology and computer vision technology in the field surveying and mapping of traffic accident treatment. Background technique [0002] Today, most of the traffic police at home and abroad still use a large number of manual operations in the survey of traffic accident sites. Manual operations mainly rely on traditional methods such as human eye judgment, hand touch, tape measurement, and manual drawing. There are mainly defects in the following aspects: 1) In terms of measurement data, phenomena such as missed measurement, wrong measurement, missing drawing, and wrong drawing occur from time to time; 2) various restrictions in the measurement process, traffic accidents occur in rainy Foggy weather and night will bring great difficulties to the site survey. There are higher requirements for dealing with traffic accidents on expressways, elevated highways and bridges. It is ...

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 a binocular stereo system that simplifies the complexity of calculation, omits the work of camera calibration, has strong applicability, and is accurate in measurement. All-round visual traffic accident scene surveying and mapping instrument

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