关键词: 卫星视频, 交通流, 光流法, 速度

Abstract: 1 m-resolution satellite video has been able to achieve the real-time monitoring of the tiny ground moving target. Concerning to the features of the vehicles in satellite video date that only contain one or several pixels, this paper presents a method to estimate the traffic flow parameter from road satellite video date based on optical flow. The method firstly uses the Shi-Tomasi corner detection method to realize the vehicle detection and vehicle counts according to the vehicle target features that show as pixels in video date, and then calculates the bi-directional average traffic flow speed through the corner location information derived from optical flow in consecutive video frames. After that, a comparative analysis is made for the result. It’s an attempt to estimate the traffic flow parameter of the tiny vehicle target from satellite video data.

Key words: satellite video, traffic flow, optical flow, velocity