Sozou P D, Loizou G
Appl Opt. 1994 Jul 20;33(21):4644-51. doi: 10.1364/AO.33.004644.
We consider image motion in the visual field of an observer moving through a rigid environment under mirage conditions, in which light rays follow curved trajectories as a result of a nonuniform atmospheric refractive index. We show that, under these conditions, the translation motion field does not conform to the simple pattern observed in the absence of refraction; instead it depends on the transfer characteristic of the mirage. An interesting finding is that if the mirage has a transfer characteristic that folds, as occurs for example in the desert mirage, the motion field will, in general, be infinite at the fold point.
我们考虑在海市蜃楼条件下，观察者在刚性环境中移动时视野内的图像运动，在这种条件下，由于大气折射率不均匀，光线沿弯曲轨迹传播。我们表明，在这些条件下，平移运动场不符合在无折射情况下观察到的简单模式；相反，它取决于海市蜃楼的传递特性。一个有趣的发现是，如果海市蜃楼具有折叠的传递特性，例如在沙漠海市蜃楼中出现的情况，那么运动场通常在折叠点处是无限的。
