基于相位差异法的简易光学系统的图像复原方法

Acta Photonica Sinica(2019)

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Abstract
简易光学系统因系统结构简单而存在严重像差,导致所成图像出现模糊、失真等问题.对简易光学系统的成像特性进行分析,在已知光学系统焦距和光瞳孔径的条件下,建立含有像差的点扩散函数模型和图像复原模型,根据焦面和离焦面图像以及精确的离焦量,无需点扩散函数的先验信息,采用相位差异法对简易光学系统所成图像进行重构.实验结果表明:单透镜、双透镜和三透镜系统复原图像质量评价指标提升率分别达到24.96%、24.80%和42.04%,重构后图像质量均有明显提升.
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Key words
Simple optical system,Image restoration,Phase diversity,Point spread function,Optical aberration
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