Method for measure velocity car and Camera for photographing over-velocity car using thereof

摘要

PURPOSE: A method for measuring a vehicle speed and an unmanned overspeed detection camera using the same are provided to detect a driving speed of the vehicle by using a variation of image signals of the vehicle. CONSTITUTION: An unmanned overspeed detection camera includes a line scan camera(110) for sensing the presence of vehicle and a digital camera(120) for detecting an overspeed vehicle. The first data processing portion(115) converts images of the line scan camera(110) to image data. An amplification/gain control portion(116) amplifies the image data of the first data processing portion(115) and controls gains of the images data. A high band pass filter(117) detects high band components from the amplification/gain control portion(116). A level control portion(118) controls electric potential levels of the high band components of filtered image data. A reference potential setup portion(119) compares the controlled electric potential levels with a reference level and outputs a compared result. The second data processing portion(121) converts image signals of the digital camera(120) to image data. An image correction portion(122) corrects picture quality of the image data. A flash control portion(130) controls a flash(131). A time control portion(140) outputs time information according to operations of the line scan camera(110), the digital camera(120), and the flash(131). An interface portion(150) is used for interfacing each component with a data bus(160).