从一维透视投影光流场恢复二维刚体运动和形状  

Recovery of 2D Rigid Motion and Structure from 1D Optical Flow under Perspective Projection

作　　者：郭航[1] 储珺[2,3] 高满屯[4] 陈国定[4] 

机构地区：[1]南昌大学 [2]南昌航空工业学院 [3]西北工业大学,西安710072 [4]西北工业大学

出　　处：《机械科学与技术》2004年第9期1107-1109,共3页Mechanical Science and Technology for Aerospace Engineering

基　　金：航空基础科学基金项目 ( 0 3I5 3 0 62 )资助

摘　　要：研究从一维透视投影光流场恢复二维刚体运动和结构。证明利用一维透视投影光流场中最少 5个光流点可以完全确定刚体的二维角速度和角加速度 ,一般情况下有 2个解。利用一维透视投影光流场只能确定含一个未知比例因子的刚体二维平移速度、平移加速度和二维刚体的结构 。In this paper, we studied the problem of the recov er y of the two-dimensional rigid motion and structure from a one-dimensional opt ical flow field under perspective projection. The geometric model and mathematic model of a moving rigid object are set up. It is proved that the two-dimension al rotation parameters can be determined by using at least five optical flow po ints. In general, there are two groups of rotation parameters. The translation m otion and the structure parameters of the two-dimensional rigid object with a s cale factor are obtained. Its two-dimensional shape can be determined completel y. A computing example is given.

关 键 词：透视投影 光流场 运动 结构 视觉运动分析 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]