论文标题
带广角镜的交通监视摄像机的自动摄像机校准
Autocamera Calibration for traffic surveillance cameras with wide angle lenses
论文作者
论文摘要
我们提出了一种自动校准带有广角镜头的交通监视摄像头的方法。几分钟的视频录像足以进行整个校准过程。该方法将相机的高度从地面平面开始，这是克服比例歧义的唯一用户输入。校准分为两个阶段，1。内在校准2。外部校准。固有的校准是通过假设等距的鱼眼失真和理想的相机模型来实现的。外在校准是通过从垂直相交处的车辆运动估算到地面上的两个消失点来完成的。内在校准的第一阶段对于热摄像机也有效。已经进行了实验，以证明这种方法对可见的和热摄像机的有效性。 索引术语：鱼眼，校准，热摄像机，智能运输系统，消失点
We propose a method for automatic calibration of a traffic surveillance camera with wide-angle lenses. Video footage of a few minutes is sufficient for the entire calibration process to take place. This method takes in the height of the camera from the ground plane as the only user input to overcome the scale ambiguity. The calibration is performed in two stages, 1. Intrinsic Calibration 2. Extrinsic Calibration. Intrinsic calibration is achieved by assuming an equidistant fisheye distortion and an ideal camera model. Extrinsic calibration is accomplished by estimating the two vanishing points, on the ground plane, from the motion of vehicles at perpendicular intersections. The first stage of intrinsic calibration is also valid for thermal cameras. Experiments have been conducted to demonstrate the effectiveness of this approach on visible as well as thermal cameras. Index Terms: fish-eye, calibration, thermal camera, intelligent transportation systems, vanishing points
