The method USES the model of radial nonlinear distortion with the symmetry of optical axis to obtain correction coefficients of the optical lens, and then corrects the distortion image.
该方法利用与光轴对称的径向畸变数学模型求出光学镜头的校正系数，对畸变图像进行校正。
2
These results demonstrate that the good symmetry of pupil distribution has a better imaging for the incoherent imaging optical system with a complex pupil.
因此，对于复杂光瞳非相干成像光学系统而言，好的光瞳分布对称性具有更好的空间成像特性。
3
It consists of two parallel polarizers, an electro-optical crystal and a birefringent crystal with radial symmetry.