The invention discloses a method for detecting vehicle speed based on road monitoring videos. The method comprises the following steps: (1) dividing a lane using a lane marking line identification method and eliminating unnecessary background; (2) obtaining lane width information according to lane images; (3) calculating the actual distance represented by each pixel point; (4) solving the correction factor Beta which is used for correcting the actual lane distance represented by each pixel point; (5) calculating the optical flow of the vehicle to obtain the trajectory of the vehicle; (6) calculating the actual moving distance of the vehicle; (7) multiplying the correcting the distance by the correction factor to correct the distance; (8) calculating the speed. According to the invention, a video image analysis technology is adopted to decrease the cost of vehicle speed monitoring and speeding behavior recording; and in addition, the method also has the function of expanding the vehicle speed monitoring scope, and vehicle speed monitoring can be implemented at any place with cameras.
Method for detecting vehicle speed based on road monitoring videos
2015-04-29
Patent
Electronic Resource
English
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