The Method of Target Vehicle Speed Reconstruction Based on Driving Recorder Videos

This paper presents a practical solution to the determination of the spatial pose of the driving recorder from road image of two parallel lanes. Our new solver considers the misalignment between optical axis and road direction, which is more suitable for the road traffic accident scenes. On this basis, the vehicle grounding location and video properties are combined to achieve target vehicle speed reconstruction. Finally, the static pose calculation and dynamic vehicle speed measurement experiments are carried out respectively. The results analysis shows that the recorder's spatial pose reduction is accurate, and the relative error of target vehicle speed under the same lane does not exceed ±5%, which satisfies the demand for road traffic accident speed measurement, and can be used as a useful supplement to the existing accident vehicle speed measurement methods.