一种空中交通图象特征匹配方法

提出了一种确定飞机类型的新方法。通过 机外型和结构特征，利用空间投影理论建立了飞机投影图形与飞机姿态角之间的关系。通过该关系方程，有效地识别了飞机姿态角。利用已有的飞机型的投影图特征与实际飞机飞行图像特征之间的误差，根据最小方差进行了模型匹配。利用ＣＣＤ系统图像仿真结果表明，所提出的方法是有效的。

A new approach for figure outline fit of aircraft

A new approach for the determination of the type of an aircraft is developed in this paper. By means of choosing a distinguishable characteristic curves of the structure of an aircraft, the angle relationship between the projection figure and the x , y ,z ground axes of an aircraft is set up. According to the angle equations, a maximum likelihood method can be used for the identification of the position angles of an aircraft. Thus the type of an aircraft can be determined by minimizing square errors of outline. Moreover, a simulation by CCD system is made and the result shows that the new method is efficient to fit the figure outlines.