Aerial image-based determination method of three-dimensional information of traffic accident scene based on s

Abstract

The invention discloses an aerial-image-based determination method of three-dimensional information of a traffic accident scene and belongs to the technical field of information acquisition of traffic accident scenes. Firstly an aerial platform is constructed; then overlooking images of the accident scene are shot; afterwards geometric correction is carried out on the overlooking images; finally more than three overlooking images are selected, and three-dimensional space coordinates of interest points of the overlooking images are solved by applying a direct linear transformation algorithm. The determination method can be used for carrying out accurate longshot measurement, solving the three-dimensional space coordinates of the interest points of the images of the accident scene by utilizing multiple aerial images through three-dimensional direct linear transformation, so as to realize the accurate measurement of the traffic accident scene.

Description

technical field [0001] The invention belongs to the technical field of traffic accident scene information acquisition, in particular to a method for measuring three-dimensional information of a traffic accident scene based on aerial images. Background technique [0002] Aerial images play an important role in traffic accident scene surveys. The two-dimensional equal-scale real scene map obtained through geometric correction and coordinate transformation can efficiently restore the various elements of the accident scene, but a single image can only reflect two-dimensional information. It can accurately measure the image of a surface accurately. In some accidents, the accident elements are not necessarily on the same plane, such as gates, roadsides, and slope protection, and a single aerial image is insufficient to reflect these information. In addition, although the road surface can be approximated as a plane, in some road sections with slope changes, the error introduced by...

AI Technical Summary

Problems solved by technology

[0002] Aerial images play an important role in traffic accident scene surveys. The two-dimensional equal-scale real scene map obtained through geometric correction and coordinate transformation can efficiently restore the various elements of the accident scene, but a single image can only reflect two-dimensional information. Accurate image measurement can be accurately performed on a surface

In some accidents, the elements of the accident are not necessarily on the same plane, such as gates, roadsides, and slope protection, and a single aerial image is insufficient to reflect these information

In addition, although the road surface can be approximated as a plane, in some road sections with slope changes, the error introduced by using a single aerial image for image measurement is often relatively large

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