Vehicle target three-dimensional information acquisition method based on PTZ pan-tilt camera

Abstract

The invention discloses a vehicle target three-dimensional information acquisition method based on a PTZ pan-tilt camera. The vehicle target three-dimensional information acquisition method includes the steps: identifying a vehicle target in a video frame through a deep learning method; and obtaining coordinates of a three-dimensional envelope reference point of the vehicle target in an image coordinate system, drawing a three-dimensional envelope frame which is most suitable for the vehicle target according to the coordinate information and the constraint of the horizon, and calculating three-dimensional size information of the vehicle target by utilizing a calibration result, thereby finishing acquisition of three-dimensional information of the vehicle target. The vehicle target three-dimensional information acquisition method can adapt to different road traffic scenes, and uses the pan-tilt camera to extract a large number of vehicle targets in the scene to complete the process of three-dimensional information acquisition. The vehicle target three-dimensional information acquisition method is simple to implement and good in universality, can be applied to three-dimensional information acquisition in various road scenes, and is accurate in result.

Description

technical field [0001] The invention belongs to the technical field of intelligent transportation, and in particular relates to a method for acquiring three-dimensional information of a vehicle target based on a PTZ pan-tilt camera. Background technique [0002] The three-dimensional information of the vehicle mainly refers to the overall shape, size and spatial position of the vehicle, as well as the local details of each part. The previous acquisition methods mainly include contact measurement and image radar. , accuracy and so on have many defects. In recent years, with the rapid development of electronic technology and computer technology, the acquisition of three-dimensional information of vehicles is mostly based on computer vision theory, which recognizes the two-dimensional feature points on the image and then restores their three-dimensional space position, and then analyzes the information. Describe and understand, and further obtain interesting three-dimensional ...

AI Technical Summary

Problems solved by technology

[0004] Aiming at the defects and deficiencies in the prior art, the present invention provides a method for acquiring three-dimensional information of a vehicle target based on a PTZ pan-tilt camera, which overcomes the shortcomings of the existing method for acquiring three-dimensional information of a vehicle target such as poor versatility and inaccurate target detection.

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