公开(公告)号：EP2164043A1

公开(公告)日：2010-03-17

申请号：EP08425602.3

申请日：2008-09-12

Applicant: March Networks Corporation

Inventor： Disaro' Mauro ,  Monica, Francesco

IPC: G06T7/00 ,  H04N17/00

CPC classification number: H04N17/002

Abstract: A method and system are provided for automatic calibration of a video camera by providing automatic perspective calculation. A calibration object detector is arranged to detect a calibration object in video data representing a scene observed by a video camera, and arranged to gather object data for the detected calibration object at a multiplicity of positions, such as three or more positions. The calibration object detector can include an automatic moving object detector and/or a static object detector. An automatic plane calculator is in communication with the calibration object detector and arranged to calculate the perspective of the camera based on gathered object data for at least one calibration object at a multiplicity of positions. The automation provided can enhance the operation of video analytics systems and reduce errors that can be introduced when an unskilled operator manually enters parameters on which the perspective is estimated.

Abstract translation: 提供了通过提供自动透视计算来自动校准摄像机的方法和系统。 校准对象检测器被布置成在表示由摄像机观察到的场景的视频数据中检测校准对象，并且被布置成在诸如三个或更多个位置的多个位置处收集所检测到的校准对象的对象数据。 校准对象检测器可以包括自动移动物体检测器和/或静态物体检测器。 自动平面计算器与校准对象检测器通信，并且被布置为基于在多个位置处的至少一个校准对象的聚集对象数据来计算摄像机的透视图。 所提供的自动化可以增强视频分析系统的操作，并减少不熟练的操作员手动输入视角估计参数时可能引入的错误。