复眼三维目标定位精度分析

为提高视觉测量系统的精度,以一种复眼结构为模型, 着重探讨了复眼系统的多子眼在提高目标定位精度中的作用,并进行系统的仿真分析。首先,对复眼结构进行了简要介绍。随后利用Zemax建立了复眼的光学入射模型。接着,设定标定目标平面并逐点设定空间三维坐标并得到标定点与透镜中心之间的入射角度。然后,建立起入射角度与对应像点之间的关系作为标定结果。最后,根据标定结果分别利用复眼中不同子眼数对空间目标点坐标进行求取。分析结果显示:利用复眼多子眼共同定位目标较传统的双目视觉能获得更高的精度,并且精度会随着子眼数目的增加而提高,该方案为复眼的实际制作和应用提供了良好的指导作用。

Positioning precision analysis for three-dimensional target based on compound eye system

In order to prompt the positioning precision for three -dimension target, a compound eye system is introduced, and the process that the multi-eye of compound eye influences on the positioning precision was analyzed, and the simulation analysis was finished. Firstly, a compound eye as the positioning system was introduced. Subsequently, the optical model of incident ray from target to imaging lens was built. Next, three-dimension coordinates of special target array points are set. According to the three-dimension coordinate of each target point and the three-dimension coordinate of its imaging lens, the incident angle from the target to its imaging lens was solved. Then, the corresponding relation between every incident angle and its imaging point coordinate was established as the calibration result of the imaging system. Finally, the three -dimension coordinate of a target point was solved with various sub-eyes according to the calibration result. The simulation results show that the compound eye system with multi-eye could provide higher positioning precision, and the more sub-eyes, the higher precision. The scheme can guide the manufacture of compound eye for target positioning with high precision and expand its applicable range in the further.