Full-field calibration and compensation of lateral chromatic aberration based on unwrapped phase

Xiaohong Liu, Shujun Huang, Zonghua Zhang, Feng Gao, Xiangqian Jiang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Citation (Scopus)

Abstract

Lateral chromatic aberration (CA) of color cameras has great effects on the imaging quality. This paper presents a novel method to full-field calibrate lateral CA between color channels by using unwrapped phase data. Closed circle sinusoidal fringe patterns having the optimum three-fringe numbers are generated and displayed on a liquid crystal screen consecutively through red, green and blue channels. These closed fringe patterns are captured by a color camera. The wrapped phase and unwrapped phase of each pixel can be calculated by using four-step phase shifting algorithm and optimum three-fringe number method, respectively. The pixel deviations produced by lateral CA are computed by comparing the obtained absolute phase data between red, blue, and green channels in polar coordinate system and calibration is accomplished in Cartesian coordinate system. Lateral CA between color channels of the color camera can be compensated by using the calibrated data. Simulated and experimental results show the validity of the proposed calibration and compensation method.

LanguageEnglish
Title of host publicationOptical Design and Testing VII
PublisherSPIE
Number of pages10
Volume10021
ISBN (Electronic)9781510604612
DOIs
Publication statusPublished - 31 Oct 2016
EventOptical Design and Testing VII - Beijing, China
Duration: 12 Oct 201613 Oct 2016

Conference

ConferenceOptical Design and Testing VII
CountryChina
CityBeijing
Period12/10/1613/10/16

Fingerprint

Aberrations
Aberration
aberration
Lateral
Calibration
Color
color
Camera
Cameras
cameras
diffraction patterns
Pixel
Pixels
pixels
Cartesian coordinate system
Liquid Crystals
Closed
polar coordinates
Phase Shifting
Cartesian coordinates

Cite this

Liu, X., Huang, S., Zhang, Z., Gao, F., & Jiang, X. (2016). Full-field calibration and compensation of lateral chromatic aberration based on unwrapped phase. In Optical Design and Testing VII (Vol. 10021). [1002119] SPIE. https://doi.org/10.1117/12.2245839
Liu, Xiaohong ; Huang, Shujun ; Zhang, Zonghua ; Gao, Feng ; Jiang, Xiangqian. / Full-field calibration and compensation of lateral chromatic aberration based on unwrapped phase. Optical Design and Testing VII. Vol. 10021 SPIE, 2016.
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abstract = "Lateral chromatic aberration (CA) of color cameras has great effects on the imaging quality. This paper presents a novel method to full-field calibrate lateral CA between color channels by using unwrapped phase data. Closed circle sinusoidal fringe patterns having the optimum three-fringe numbers are generated and displayed on a liquid crystal screen consecutively through red, green and blue channels. These closed fringe patterns are captured by a color camera. The wrapped phase and unwrapped phase of each pixel can be calculated by using four-step phase shifting algorithm and optimum three-fringe number method, respectively. The pixel deviations produced by lateral CA are computed by comparing the obtained absolute phase data between red, blue, and green channels in polar coordinate system and calibration is accomplished in Cartesian coordinate system. Lateral CA between color channels of the color camera can be compensated by using the calibrated data. Simulated and experimental results show the validity of the proposed calibration and compensation method.",
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Liu, X, Huang, S, Zhang, Z, Gao, F & Jiang, X 2016, Full-field calibration and compensation of lateral chromatic aberration based on unwrapped phase. in Optical Design and Testing VII. vol. 10021, 1002119, SPIE, Optical Design and Testing VII, Beijing, China, 12/10/16. https://doi.org/10.1117/12.2245839

Full-field calibration and compensation of lateral chromatic aberration based on unwrapped phase. / Liu, Xiaohong; Huang, Shujun; Zhang, Zonghua; Gao, Feng; Jiang, Xiangqian.

Optical Design and Testing VII. Vol. 10021 SPIE, 2016. 1002119.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - Lateral chromatic aberration (CA) of color cameras has great effects on the imaging quality. This paper presents a novel method to full-field calibrate lateral CA between color channels by using unwrapped phase data. Closed circle sinusoidal fringe patterns having the optimum three-fringe numbers are generated and displayed on a liquid crystal screen consecutively through red, green and blue channels. These closed fringe patterns are captured by a color camera. The wrapped phase and unwrapped phase of each pixel can be calculated by using four-step phase shifting algorithm and optimum three-fringe number method, respectively. The pixel deviations produced by lateral CA are computed by comparing the obtained absolute phase data between red, blue, and green channels in polar coordinate system and calibration is accomplished in Cartesian coordinate system. Lateral CA between color channels of the color camera can be compensated by using the calibrated data. Simulated and experimental results show the validity of the proposed calibration and compensation method.

AB - Lateral chromatic aberration (CA) of color cameras has great effects on the imaging quality. This paper presents a novel method to full-field calibrate lateral CA between color channels by using unwrapped phase data. Closed circle sinusoidal fringe patterns having the optimum three-fringe numbers are generated and displayed on a liquid crystal screen consecutively through red, green and blue channels. These closed fringe patterns are captured by a color camera. The wrapped phase and unwrapped phase of each pixel can be calculated by using four-step phase shifting algorithm and optimum three-fringe number method, respectively. The pixel deviations produced by lateral CA are computed by comparing the obtained absolute phase data between red, blue, and green channels in polar coordinate system and calibration is accomplished in Cartesian coordinate system. Lateral CA between color channels of the color camera can be compensated by using the calibrated data. Simulated and experimental results show the validity of the proposed calibration and compensation method.

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