基于可变焦距的非球面人工复眼定位技术研究

Research on aspherical compound eyes positioning technology based on variable zoom

针对单层非均一曲面复眼不能实现变焦距成像,子眼微透镜存在较大球差导致成像质量较差等问题,研究了可变焦距的非曲面复眼,实现一定范围清晰成像。介绍了基于复眼结构的人工目标定位实验系统,建立复眼多目定位数学模型。通过曲面复眼采集多通道目标像点,标定变焦距曲面复眼模型中每个子眼位置,利用最小二乘法解算超定性方程组得到目标点的空间三维坐标。开展多目定位实验,结果表明,随着捕获目标点子眼个数增加,目标定位精度越高,当捕获目标的子眼个数大于20个时,目标定位精度在10%以内。提出的复眼成像定位方案具有可行性。

In view of the problem that single-layer non-homogeneous curved compound eye cannot achieve zoom ima-ging,sub-eye micro-lens has a larger spherical aberration leads to poor imaging quality and other issues,the non-curved surface of the zoom compound eye is studied to achieve a clear range of imaging.An artificial target positioning experiment system based on compound eye structure is introduced,and a multi eye location mathematical model is set up.A multi-channel target image point is acquired through the compound eye of the curved surface,and the position of each sub-eye in the compound eye model of the zoom surface is calibrated,and the spatial3D coordinates of the target point are obtained by solving the over-qualified equation group by the least squares method.The multi-target positio-ning experiment was carried out.The results show that with the increase of the number of target eye points,the target positioning accuracy is higher.When the number of captured sub-eyes is greater than20,the target positioning accura-cy is within10%.The proposed compound eye imaging positioning scheme is feasible.