摘要
提出了一种测量被动成像系统光学散焦的新方法．不必测定光学系统的内部参数，只要改变成像镜头的光圈系数，对同一景物获取两幅不同散焦程度的数字图像，采用频域约束的最小二乘法，从离焦光学系统所成的两幅光学散焦图像中，就可计算出反应散焦变化的传递函数．对该方法进行了较详细的数学推导，得到了一些实验结果．
A new method to measure the optical defocus of a passive imaging system (ODPIS) is proposed. It is unnecessary to measure the interior parameters of the optical system with this method applied, and using least square method for the constraints in frequency domain, the ODPIS can be measured by immediate calculation of OTF of two defocused images of the same scenery obtained bychanging the aperture coefficients. The method has been verified mathematically and confirmed experimentally.
出处
《华中理工大学学报》
CSCD
北大核心
1997年第12期6-7,10,共3页
Journal of Huazhong University of Science and Technology
基金
航天工业总公司航天基金!HZ9405
