Optimization of wavefront coding imaging system using heuristic algorithms

被引：1
作者：
Gonzalez-Amador, E. [1 ]
Padilla-Vivanco, A. [1 ]
Toxqui-Quitl, C. [1 ]
Zermeno-Loreto, O. [1 ]
机构：
[1] Univ Politecn Tulancingo, Ingn 100, Tulancingo, Hidalgo, Mexico
来源：
CURRENT DEVELOPMENTS IN LENS DESIGN AND OPTICAL ENGINEERING XVIII | 2017年 / 10375卷
关键词：
Wavefront encoding; Computational imaging; Genetic algorithms; MODULATION TRANSFER-FUNCTION; PHASE MASK; FIELD; DEPTH; EXTEND;
D O I：
10.1117/12.2273063
中图分类号：
O43 [光学];
学科分类号：
070207 ; 0803 ;
摘要：
Wavefront Coding (WFC) systems make use of an aspheric Phase-Mask (PM) and digital image processing to extend the Depth of Field (EDoF) of computational imaging systems. For years, several kinds of PM have been designed to produce a point spread function (PSF) near defocus-invariant. In this paper, the optimization of the phase deviation parameter is done by means of genetic algorithms (GAs). In this, the merit function minimizes the mean square error (MSE) between the diffraction limited Modulated Transfer Function (MTF) and the MTF of the system that is wavefront coded with different misfocus. WFC systems were simulated using the cubic, trefoil, and 4 Zernike polynomials phase-masks. Numerical results show defocus invariance aberration in all cases. Nevertheless, the best results are obtained by using the trefoil phase-mask, because the decoded image is almost free of artifacts.
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页数：7
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