抄録
This research proposes a new vehicle speed measuring system based on image processing technique. Generally, in order to detect the vehicle from image taken in dark circumstance, expensive camera is needed. However, this system needs only a cheap camera, like digital camera and iPhone camera. Thereby, a small device used image processing is substituted for speed gun. By controlling the shutter speed of camera, a bright line which comes from the headlamp of a moving vehicle is appeared in the picture. Moreover, by a process of projective transformation, from even the image taken from the slant, the vehicle speed can be measured. Therefore, this system can be used as speed gun. In this work, an algorithm depend on this feature is developed. Experiment result shows a reasonable measuring value.
