The invention discloses a vehicle speed calculation method based on a video image, and relates to the technical field of target detection based on the video image and vehicle speed calculation applied to a traffic scene, and the method comprises the steps: extracting each frame of image data in a camera video, and recognizing a lane line; affine transformation is carried out on the lane line, and target deformation is avoided; acquiring upper and lower endpoint positions of a lane line, and generating two sampling images in real time; identifying targets in the two sampling images; target matching is carried out, and the height difference of the same target on the two sampling images is calculated through deep learning; the height difference is converted into time difference, and the vehicle speed is calculated according to the distance divided by the time. Compared with the prior art, the method has the characteristics of high vehicle speed calculation efficiency, high precision, simple calculation and wide adaptability.
一种基于视频图像的车速计算方法,涉及基于视频图像的目标检测、应用于交通场景下的车速计算技术领域,本发明实现其方法:提取摄像头视频中的每一帧图像数据,识别分道线;对分道线进行仿射变换,避免目标变形;获取分道线上下端点位置,实时生成两张采样图;识别两张采样图中的目标;进行目标匹配,通过深度学习计算两张采样图上同一个目标的高度差;将高度差转换成时间差,根据距离除以时间计算车速。本发明专利同现有技术相比,具有车速计算效率高、精度高、计算简单、适应性广的特点。
Vehicle speed calculation method based on video image
一种基于视频图像的车速计算方法
2024-02-13
Patent
Electronic Resource
Chinese
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