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软件学报  2006 

A Vision Based Method for Aircraft Approach Angle Estimation
一种基于视觉的飞行器接近角估计方法

Keywords: FOE(focus-of-expansion),horizon
飞行器接近角

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Abstract:

An algorithm for estimating aircraft approach angle using computer vision is proposed in this paper. During the landing of an aircraft, the descent of the aircraft may be approximately considered as a pure translation motion. In this case the epipole has the same coordinates in all images and is called the Focus-of-Expansion (FOE), and the vanishing line of the ground plane is termed the Horizon. Furthermore, how the Focus-of-Expansion and the Horizon are extracted from a few calibrated sequential images is first introduced, then the aircraft approach angle is derived from these parameters. Simulated and real experiments validate this algorithm.

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