Optimal PSF Estimation for Simple Optical System Using a Wide-Band Sensor Based on PSF Measurement
Simple optical system imaging is a method to simplify optical systems by removing aberrations using image deconvolution. The point spread function (PSF) used in deconvolution is an important factor that affects the image quality. However, it is difficult to obtain optimal PSFs. The blind estimation...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-10-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/18/10/3552 |
| _version_ | 1811305342159552512 |
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| author | Yunda Zheng Wei Huang Yun Pan Mingfei Xu |
| author_facet | Yunda Zheng Wei Huang Yun Pan Mingfei Xu |
| author_sort | Yunda Zheng |
| collection | DOAJ |
| description | Simple optical system imaging is a method to simplify optical systems by removing aberrations using image deconvolution. The point spread function (PSF) used in deconvolution is an important factor that affects the image quality. However, it is difficult to obtain optimal PSFs. The blind estimation of PSFs relies heavily on the information in the image. Measured PSFs are often misused because real sensors are wide-band. We present an optimal PSF estimation method based on PSF measurements. Narrow-band PSF measurements at a single depth are used to calibrate the optical system; these enable the simulation of real lenses. Then, we simulate PSFs in the wavelength pass range of each color channel all over the field. The optimal PSFs are computed according to these simulated PSFs. The results indicated that the use of the optimal PSFs significantly reduces the artifacts caused by misuse of PSFs, and enhances the image quality. |
| first_indexed | 2024-04-13T08:23:44Z |
| format | Article |
| id | doaj.art-8dcd0663fcd746b28cc7fdad62892e3a |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-13T08:23:44Z |
| publishDate | 2018-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-8dcd0663fcd746b28cc7fdad62892e3a2022-12-22T02:54:33ZengMDPI AGSensors1424-82202018-10-011810355210.3390/s18103552s18103552Optimal PSF Estimation for Simple Optical System Using a Wide-Band Sensor Based on PSF MeasurementYunda Zheng0Wei Huang1Yun Pan2Mingfei Xu3State Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaState Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaUniversity of Chinese Academy of Sciences, Beijing 100049, ChinaState Key Laboratory of Applied Optics, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130033, ChinaSimple optical system imaging is a method to simplify optical systems by removing aberrations using image deconvolution. The point spread function (PSF) used in deconvolution is an important factor that affects the image quality. However, it is difficult to obtain optimal PSFs. The blind estimation of PSFs relies heavily on the information in the image. Measured PSFs are often misused because real sensors are wide-band. We present an optimal PSF estimation method based on PSF measurements. Narrow-band PSF measurements at a single depth are used to calibrate the optical system; these enable the simulation of real lenses. Then, we simulate PSFs in the wavelength pass range of each color channel all over the field. The optimal PSFs are computed according to these simulated PSFs. The results indicated that the use of the optimal PSFs significantly reduces the artifacts caused by misuse of PSFs, and enhances the image quality.http://www.mdpi.com/1424-8220/18/10/3552imaging sensorspoint spread functionimage restorationdeconvolutionsimple optical system |
| spellingShingle | Yunda Zheng Wei Huang Yun Pan Mingfei Xu Optimal PSF Estimation for Simple Optical System Using a Wide-Band Sensor Based on PSF Measurement Sensors imaging sensors point spread function image restoration deconvolution simple optical system |
| title | Optimal PSF Estimation for Simple Optical System Using a Wide-Band Sensor Based on PSF Measurement |
| title_full | Optimal PSF Estimation for Simple Optical System Using a Wide-Band Sensor Based on PSF Measurement |
| title_fullStr | Optimal PSF Estimation for Simple Optical System Using a Wide-Band Sensor Based on PSF Measurement |
| title_full_unstemmed | Optimal PSF Estimation for Simple Optical System Using a Wide-Band Sensor Based on PSF Measurement |
| title_short | Optimal PSF Estimation for Simple Optical System Using a Wide-Band Sensor Based on PSF Measurement |
| title_sort | optimal psf estimation for simple optical system using a wide band sensor based on psf measurement |
| topic | imaging sensors point spread function image restoration deconvolution simple optical system |
| url | http://www.mdpi.com/1424-8220/18/10/3552 |
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