Using Optical Flow under Birds-eye View Transform to Estimate the Height of Objects around a Vehicle
The paper proposed a new method that can real-time estimates the height of objects with a single camera from a birds-eye view. Generally, it is impossible to obtain 3-D information, like the depth of objects, with a single lens camera without the additional information, such as the height and the tilt angle of the camera, are known in advance 1. The disparity map of binocular cameras is usually employed to estimate depth. It is not suitable for vehicles to estimate the height (similar to depth estimating from a planar view) of objects from a birds-eye view due to the difficulties of installing and corresponding. Therefore, the optical flow to estimate the height of the object with one camera is proposed. There are two features under a dynamic birds-eye view of image. First, the optical flow value is proportional to the height of the object. Second, there is no perspective effect in each layer height of an image plane. Several experimental results are included to show the proposed method is feasible.
Birds-eye View Optical Flow Estimate Height Camera Calibration
Fung-Chan Lei Chin-Yi He Rong-Chin Lo
Institute of Computer and Communication Engineering, National Taipei University of Technology, Taiwan 10608, ROC
国际会议
合肥
英文
1839-1845
2011-09-23（万方平台首次上网日期，不代表论文的发表时间）