Vehicle video speed measurement method based on multi-viewpoint camera

Abstract

The invention puts forward a vehicle video speed measurement method based on a multi-viewpoint camera, and is used for solving the problem of big error of vehicle speed detection since the measurementdistance of a single camera is unstable. The method comprises the following steps that: calibrating a plurality of cameras; carrying out rectification on an image coordinate and a world coordinate; according to multiple viewpoints, positioning a vehicle target; and according to positioning data, measuring the movement distance and the movement speed of the vehicle. By use of the method, through multi-camera calibration, monitoring picture collection and a method based on statistical learning, the target is accurately positioned, vehicle speed is calculated to realize the speed measurement ofthe video, the positioning accuracy of the target vehicle in video collection data is improved, in addition, an inspection missing problem in the single-camera target detection is avoided and reduced,the calculation amount of the image coordinate and the world coordinate is small, the real-time detection of video monitoring can be realized, and an alarm is given. The method is high in measurementand wide in applicable ranges, a situation that single camera detection is not integral can be avoided, and a severe environment is coped.

Description

technical field [0001] The invention relates to the technical field of vehicle speed measurement, in particular to a vehicle video speed measurement method based on multi-viewpoint cameras. Background technique [0002] The accelerated pace of people's life has led to the widespread popularization of automobiles and the rapid development of the transportation industry. The popularity of vehicles makes traffic automation management and safety management an urgent and urgent problem to be solved. In order to solve many problems faced by road traffic, intelligent transportation system stands out. my country's intelligent transportation system is used in highway traffic, urban road traffic and urban public transport informationization. [0003] Vehicle speed measurement in intelligent transportation systems is crucial to traffic safety. Current vehicle speed measurement methods mainly include coil speed measurement, laser speed measurement, radar speed measurement, video speed...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the technical problem that the measurement distance of a single camera is unstable in the existing video speed measurement method, resulting in relatively large errors in vehicle speed detection, the present invention proposes a vehicle video speed measurement method based on multi-viewpoint cameras, which uses multiple cameras to monitor the running speed of the vehicle. Speed ​​measurement, greatly improving the measurement accuracy

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