道路交通事故摄影测量模型的标定点自动提取技术研究

Automatic Detection Technology of Reference Points for Traffic Accident Photogrammetry Model

照相机内外参数标定是计算机视觉应用于道路交通事故摄影测量的基础,直接影响着测量精度。标定参考点的准确定位和提取是其中关键的一步。采用平面棋盘模板作为标定物,提出了一种基于Harris算子的角点自动提取方法。实验结果表明,这一方法可以快速、准确实现标定点的提取。

Camera calibration is the base of applying computer vision to measuring accident scene, which determines the accuracy of measurement. Accurate location and detection of reference points is an important step. Corner detection method based on Harris corner detector is given in the paper,with planar pattern as the reference object. The experiment results demonstrate that reference points can be detected quickly and accurately by this method.