基本信息:
- 专利标题： 通过地平线估计进行的摄像机自动校准
- 专利标题（英）：Camera auto-calibration by horizon estimation
- 申请号：CN201010138196.2 申请日：2010-02-08
- 公开(公告)号：CN101800908A 公开(公告)日：2010-08-11
- 发明人： W·张 , S·M·奈克
- 申请人： 通用汽车环球科技运作公司
- 申请人地址： 美国密执安州
- 专利权人： 通用汽车环球科技运作公司
- 当前专利权人： 通用汽车环球科技运作公司
- 当前专利权人地址： 美国密执安州
- 代理机构： 中国专利代理(香港)有限公司
- 代理人： 彭武; 谭祐祥
- 优先权： 12/367305 2009.02.06 US
- 主分类号： H04N17/00
- IPC分类号： H04N17/00 ; G06T7/00
A method for estimating the horizon in an image of a camera to provide camera auto-calibration in the pitch direction. The method includes taking an image of a scene and generating a texture map of the image using horizontal edge detection analysis to locate horizontal edges in the scene. The method also includes providing a motion map by providing image differencing between subsequent images to find areas in the scene with no motion while the vehicle is moving. The texture map and the motion map are combined to identify the areas in the image that do not move and contain horizontal edges. A horizontal projection is generated from the combined map by counting white dots in the map in the horizontal direction. The horizontal projection is smoothed to eliminate noise and the location of thehorizon is estimated in the image by identifying the maximum peak in the horizontal projection.
公开/授权文献:
- CN101800908B 通过地平线估计进行的摄像机自动校准 公开/授权日：2012-12-19