scholarly journals Analog optical deconvolution computing for wavefront coding based on nanoantennas metasurfaces

2021 ◽  
Author(s):  
Jiahua Zhang ◽  
Shouqian Chen ◽  
Di Wang ◽  
Xueshen Li ◽  
Jiaqian Yu ◽  
...  
Keyword(s):  
Wavefront Coding

The suppression of aero-optical aberration of conformal dome by wavefront coding

2021 ◽  
pp. 126876
Author(s):  
Jiaqian Yu ◽  
Shouqian Chen ◽  
Fanyang Dang ◽  
Xueshen Li ◽  
Xiaotian Shi ◽  
...  
Keyword(s):  
Optical Aberration ◽  
Wavefront Coding

scholarly journals Optical Aberration Calibration and Correction of Photographic System Based on Wavefront Coding

Sensors ◽  
2021 ◽  
Vol 21 (12) ◽  
pp. 4011
Author(s):  
Chuanwei Yao ◽  
Yibing Shen
Keyword(s):  
Imaging System ◽  
Optical Design ◽  
Computational Imaging ◽  
Large Field ◽  
Wavefront Aberration ◽  
Imaging Method ◽  
Image Deconvolution ◽  
Pupil Function ◽  
Wavefront Coding ◽  
Blurred Images

The image deconvolution technique can recover potential sharp images from blurred images affected by aberrations. Obtaining the point spread function (PSF) of the imaging system accurately is a prerequisite for robust deconvolution. In this paper, a computational imaging method based on wavefront coding is proposed to reconstruct the wavefront aberration of a photographic system. Firstly, a group of images affected by local aberration is obtained by applying wavefront coding on the optical system’s spectral plane. Then, the PSF is recovered accurately by pupil function synthesis, and finally, the aberration-affected images are recovered by image deconvolution. After aberration correction, the image’s coefficient of variation and mean relative deviation are improved by 60% and 30%, respectively, and the image can reach the limit of resolution of the sensor, as proved by the resolution test board. Meanwhile, the method’s robust anti-noise capability is confirmed through simulation experiments. Through the conversion of the complexity of optical design to a post-processing algorithm, this method offers an economical and efficient strategy for obtaining high-resolution and high-quality images using a simple large-field lens.

Alleviating image artifacts in wavefront coding extended depth of field imaging system

2019 ◽  
Vol 436 ◽  
pp. 232-238
Author(s):  
Xutao Mo ◽  
Tao Zhang ◽  
Bin Wang ◽  
Xianshan Huang ◽  
Cuifang Kuang ◽  
...  
Keyword(s):  
Imaging System ◽  
Depth Of Field ◽  
Image Artifacts ◽  
Wavefront Coding ◽  
Extended Depth Of Field ◽  
Field Imaging

Phase mask selection in wavefront coding systems: A design approach

2010 ◽  
Vol 48 (7-8) ◽  
pp. 779-785 ◽  
Author(s):  
Guillem Carles ◽  
Artur Carnicer ◽  
Salvador Bosch
Keyword(s):  
Design Approach ◽  
Phase Mask ◽  
Coding Systems ◽  
Wavefront Coding

Combination of color coding and wavefront coding for extended depth of field

2017 ◽  
Vol 392 ◽  
pp. 252-257 ◽  
Author(s):  
Zhaolou Cao ◽  
Chunjie Zhai ◽  
Jinhua Li ◽  
Fenglin Xian ◽  
Shixin Pei
Keyword(s):  
Depth Of Field ◽  
Color Coding ◽  
Wavefront Coding ◽  
Extended Depth Of Field

Extension Ratio of the Depth of Field for Wavefront Coding Imaging System

2008 ◽  
Vol 28 (5) ◽  
pp. 870-875 ◽  
Author(s):  
潘超 Pan Chao ◽  
陈家璧 Chen Jiabi ◽  
张荣福 Zhang Rongfu ◽  
庄松林 Zhuang Songlin
Keyword(s):  
Imaging System ◽  
Depth Of Field ◽  
Extension Ratio ◽  
Wavefront Coding
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