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1. 发明申请

WO2012139636A1 ONLINE VEHICLE CAMERA CALIBRATION BASED ON ROAD SURFACE TEXTURE TRACKING AND GEOMETRIC PROPERTIES 审中-公开
标题翻译：基于道路表面纹理跟踪和几何属性的在线车辆相机校准
公开(公告)号：WO2012139636A1
公开(公告)日：2012-10-18
申请号：PCT/EP2011/055789
申请日：2011-04-13
申请人： CONNAUGHT ELECTRONICS LIMITED , APPLICATION SOLUTIONS (ELECTRONICS AND VISION) LIMITED , FRIEL, Myles , SAVAGE, Derek Anthony , HUGHES, Ciaran , ERMILIOS, Pantelis
发明人： FRIEL, Myles , SAVAGE, Derek Anthony , HUGHES, Ciaran , ERMILIOS, Pantelis
IPC分类号： G06T7/00
CPC分类号： G06T7/80 , G06T2207/30248
摘要： The invention relates to a method for online calibration of a vehicle video system evaluated from image frames of a camera containing features on the road. A portion of a road surface is captured by the camera in an image frame. A selection of at least two different features within the image frame is taken, the selected features being chosen as respective reference points. A sequence of at least one more image frame is performed with the camera while locating within the new frame the features chosen as reference points to be tracked. Analysing in a virtual image space the trajectory covered by the reference points during driving interval between image sequence by identifying a geometrical shape obtained by joining the located reference points between each other in each used images and considering the respective trajectories. A deviation of the resulting geometrical object from a parallelogram with corners defined by the reference points from at least two subsequent images is calculated while any measured deviation being used to define an offset correction of the camera.
摘要翻译：本发明涉及一种用于在包含道路上的特征的照相机的图像帧中评估的车辆视频系统的在线校准方法。路面的一部分被照相机拍摄在图像框架中。在图像帧内选择至少两个不同的特征，所选择的特征被选择为相应的参考点。在照相机中执行至少一个更多图像帧的序列，同时在新帧内定位要被追踪的参考点的特征。在虚拟图像空间中，通过识别通过在每个使用的图像中连接彼此之间的位置参考点并考虑各个轨迹而获得的几何形状，在图像序列之间的驱动间隔期间，分析由参考点覆盖的轨迹。计算所得到的几何对象与来自至少两个后续图像的参考点限定的角度的平行四边形的偏差，而使用任何测量偏差来定义相机的偏移校正。

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