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Communication

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

State Key Laboratory of Modern Optical Instrumentation, Zhejiang University, Hangzhou 310027, China
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Academic Editors: Alessandro Artusi and Pedram Ghamisi
Sensors 2021, 21(12), 4011; https://doi.org/10.3390/s21124011
Received: 19 April 2021 / Revised: 26 May 2021 / Accepted: 27 May 2021 / Published: 10 June 2021
(This article belongs to the Section Physical Sensors)
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. View Full-Text
Keywords: image processing; PSF; wavefront coding; deconvolution; photographic system image processing; PSF; wavefront coding; deconvolution; photographic system
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MDPI and ACS Style

Yao, C.; Shen, Y. Optical Aberration Calibration and Correction of Photographic System Based on Wavefront Coding. Sensors 2021, 21, 4011. https://doi.org/10.3390/s21124011

AMA Style

Yao C, Shen Y. Optical Aberration Calibration and Correction of Photographic System Based on Wavefront Coding. Sensors. 2021; 21(12):4011. https://doi.org/10.3390/s21124011

Chicago/Turabian Style

Yao, Chuanwei; Shen, Yibing. 2021. "Optical Aberration Calibration and Correction of Photographic System Based on Wavefront Coding" Sensors 21, no. 12: 4011. https://doi.org/10.3390/s21124011

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