光学
计算机科学
全息术
自适应光学
物理
图像质量
光传递函数
波前
图像分辨率
数字全息显微术
材料科学
点扩散函数
基点
作者
Lingyu Ai,Xiao Shi,Zhiqiang Yan,Cheng Liu,Shouyu Wang
出处
期刊:Optical Engineering
[SPIE - International Society for Optical Engineering]
日期:2019-11-23
卷期号:58 (11): 113106-
标识
DOI:10.1117/1.oe.58.11.113106
摘要
In order to optically refocus three-dimensional (3-D) objects on their real depths, we design an adaptive periodic δ-function array (A-PDFA)-based 3-D optical refocusing method. An A-PDFA kernel with adaptively determined impulse number is first generated, and next by convolving this A-PDFA with the elemental image array (EIA) captured using an integral imaging system, the depth-filtered EIA is obtained to finally refocus the objects on their real depths. Based on simulations and experiments, the performance of the A-PDFA-based 3-D optical refocusing method is confirmed with the widest effective process zone and the highest image quality compared to other classical 3-D optical refocusing methods. Thus, it is believed the proposed method potentially can be used in various 3-D imaging and display applications.
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