Tao Yiting, Perera Asanka, Teague Samuel, McIntyre Timothy, Warrant Eric, Chahl Javaan
School of Engineering, University of South Australia, Mawson Lakes, SA 5095, Australia.
School of Engineering, University of Southern Queensland, Springfield, QLD 4300, Australia.
Biomimetics (Basel). 2024 Jun 21;9(7):375. doi: 10.3390/biomimetics9070375.
Many species rely on celestial cues as a reliable guide for maintaining heading while navigating. In this paper, we propose a method that extracts the Milky Way (MW) shape as an orientation cue in low-light scenarios. We also tested the method on both real and synthetic images and demonstrate that the performance of the method appears to be accurate and reliable to motion blur that might be caused by rotational vibration and stabilisation artefacts. The technique presented achieves an angular accuracy between a minimum of 0.00° and a maximum 0.08° for real night sky images, and between a minimum of 0.22° and a maximum 1.61° for synthetic images. The imaging of the MW is largely unaffected by blur. We speculate that the use of the MW as an orientation cue has evolved because, unlike individual stars, it is resilient to motion blur caused by locomotion.
许多物种在导航时依靠天体线索作为保持航向的可靠指南。在本文中，我们提出了一种在低光照场景下提取银河系形状作为方向线索的方法。我们还在真实图像和合成图像上对该方法进行了测试，并证明该方法对于由旋转振动和稳定伪影可能引起的运动模糊的性能似乎是准确可靠的。所提出的技术对于真实夜空图像实现了最小0.00°至最大0.08°的角精度，对于合成图像实现了最小0.22°至最大1.61°的角精度。银河系的成像在很大程度上不受模糊影响。我们推测，将银河系用作方向线索的这种方式已经进化，因为与单个恒星不同，它能抵御由移动引起的运动模糊。
