Power Phase Apodization Study on Compensation Defocusing and Chromatic Aberration in the Imaging System

Electronics

卷:10

Muhammad A. Butt¹  Alexey P. Dzyuba²  Sergey B. Popov³  Pavel G. Serafimovich³  Svetlana N. Khonina³  Sergey G. Volotovskiy³ 

[1] Faculty of Information Technology, Samara National Research University, 34 Moskovskoye Shosse, 443086 Samara, Russia;

[2] ITMO University, 49 Kronverksky Av., 197101 St. Petersburg, Russia;

[3] Image Processing Systems Institute of RAS-Branch of the FSRC “Crystallography and Photonics” RAS, 151 Molodogvardeyskaya Str., 443001 Samara, Russia;

关键词: imaging system;    extended depth of field;    power phase apodization;    image deconvolution;   

DOI  :  10.3390/electronics10111327

来源: DOAJ

【 摘 要 】

We performed a detailed comparative study of the parametric high degree (cubic, fourth, and fifth) power phase apodization on compensation defocusing and chromatic aberration in the imaging system. The research results showed that increasing the power degree of the apodization function provided better independence (invariance) of the point spread function (PSF) from defocusing while reducing the depth of field (DOF). This reduction could be compensated by increasing the parameter α; however, this led to an increase in the size of the light spot. A nonlinear relationship between the increase in the DOF and spot size was shown (due to a small increase in the size of the light spot, the DOF can be significantly increased). Thus, the search for the best solution was based on a compromise of restrictions on the circle of confusion (CoC) and DOF. The modeling of color image formation under defocusing conditions for the considered apodization functions was performed. The subsequent deconvolution of the resulting color image was demonstrated.

【 授权许可】

Unknown