Calibration of Imaging Sensor and Fiber Optic Taper-Caused Distortion in an X-Ray Intensified CMOS Camera
An integrated calibration method of the imaging sensor and the fiber optic taper-caused distortion in an intensified Complementary Metal-Oxide-Semiconductor (CMOS) camera for the X-ray capture application is proposed. Generally, four kinds of distortions need to be corrected in this system: the colu...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2019-01-01
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| Series: | IEEE Access |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/8935227/ |
| _version_ | 1819174354179588096 |
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| author | Haoting Liu Shaohua Yang Chang Guo Jiacheng Li Ming Yan Jinhui Lan |
| author_facet | Haoting Liu Shaohua Yang Chang Guo Jiacheng Li Ming Yan Jinhui Lan |
| author_sort | Haoting Liu |
| collection | DOAJ |
| description | An integrated calibration method of the imaging sensor and the fiber optic taper-caused distortion in an intensified Complementary Metal-Oxide-Semiconductor (CMOS) camera for the X-ray capture application is proposed. Generally, four kinds of distortions need to be corrected in this system: the column noise, the inconsistent pixel intensity response of whole frame, the nonlinear intensity response of each pixel, and the geometry distortion of whole frame. To conquer these problems, first, the column noise is estimated and subtracted from the captured image. The multiple measurement data processing method and the strip noise estimation technique are used. Second, a kind of two-step correction technique of the pixel intensity response is proposed to solve middle two distortion problems. The first step builds the ideal intensity response line for all pixels in image; and the second step estimates and compensates the correction error for each pixel by a polynomial function. Third a polynomial fitting method is also utilized to correct the geometry distortion. The RANdom SAmple Consensus (RANSC) computation mechanism is used to improve the calibration precision further. The optic indices of fiber optic taper and camera are considered to assist the selection of key parameters of these calibration method above. Many experiment results have proved the correctness and effectiveness of proposed method. |
| first_indexed | 2024-12-22T20:37:38Z |
| format | Article |
| id | doaj.art-e7967a6a2b1340f08d4be9698cbf68d5 |
| institution | Directory Open Access Journal |
| issn | 2169-3536 |
| language | English |
| last_indexed | 2024-12-22T20:37:38Z |
| publishDate | 2019-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Access |
| spelling | doaj.art-e7967a6a2b1340f08d4be9698cbf68d52022-12-21T18:13:26ZengIEEEIEEE Access2169-35362019-01-01718539318540710.1109/ACCESS.2019.29602598935227Calibration of Imaging Sensor and Fiber Optic Taper-Caused Distortion in an X-Ray Intensified CMOS CameraHaoting Liu0https://orcid.org/0000-0003-2537-6138Shaohua Yang1https://orcid.org/0000-0001-8487-5899Chang Guo2https://orcid.org/0000-0003-4396-3619Jiacheng Li3https://orcid.org/0000-0003-3250-5161Ming Yan4https://orcid.org/0000-0002-5656-3764Jinhui Lan5https://orcid.org/0000-0003-0412-9621Beijing Engineering Research Center of Industrial Spectrum Imaging, School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing, ChinaNorthwest Institute of Nuclear Technology, Xi’an, ChinaBeijing Engineering Research Center of Industrial Spectrum Imaging, School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing, ChinaBeijing Engineering Research Center of Industrial Spectrum Imaging, School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing, ChinaNorthwest Institute of Nuclear Technology, Xi’an, ChinaBeijing Engineering Research Center of Industrial Spectrum Imaging, School of Automation and Electrical Engineering, University of Science and Technology Beijing, Beijing, ChinaAn integrated calibration method of the imaging sensor and the fiber optic taper-caused distortion in an intensified Complementary Metal-Oxide-Semiconductor (CMOS) camera for the X-ray capture application is proposed. Generally, four kinds of distortions need to be corrected in this system: the column noise, the inconsistent pixel intensity response of whole frame, the nonlinear intensity response of each pixel, and the geometry distortion of whole frame. To conquer these problems, first, the column noise is estimated and subtracted from the captured image. The multiple measurement data processing method and the strip noise estimation technique are used. Second, a kind of two-step correction technique of the pixel intensity response is proposed to solve middle two distortion problems. The first step builds the ideal intensity response line for all pixels in image; and the second step estimates and compensates the correction error for each pixel by a polynomial function. Third a polynomial fitting method is also utilized to correct the geometry distortion. The RANdom SAmple Consensus (RANSC) computation mechanism is used to improve the calibration precision further. The optic indices of fiber optic taper and camera are considered to assist the selection of key parameters of these calibration method above. Many experiment results have proved the correctness and effectiveness of proposed method.https://ieeexplore.ieee.org/document/8935227/Distortion correctionX-ray image sensorCMOSfiber optic taperRANSAC |
| spellingShingle | Haoting Liu Shaohua Yang Chang Guo Jiacheng Li Ming Yan Jinhui Lan Calibration of Imaging Sensor and Fiber Optic Taper-Caused Distortion in an X-Ray Intensified CMOS Camera IEEE Access Distortion correction X-ray image sensor CMOS fiber optic taper RANSAC |
| title | Calibration of Imaging Sensor and Fiber Optic Taper-Caused Distortion in an X-Ray Intensified CMOS Camera |
| title_full | Calibration of Imaging Sensor and Fiber Optic Taper-Caused Distortion in an X-Ray Intensified CMOS Camera |
| title_fullStr | Calibration of Imaging Sensor and Fiber Optic Taper-Caused Distortion in an X-Ray Intensified CMOS Camera |
| title_full_unstemmed | Calibration of Imaging Sensor and Fiber Optic Taper-Caused Distortion in an X-Ray Intensified CMOS Camera |
| title_short | Calibration of Imaging Sensor and Fiber Optic Taper-Caused Distortion in an X-Ray Intensified CMOS Camera |
| title_sort | calibration of imaging sensor and fiber optic taper caused distortion in an x ray intensified cmos camera |
| topic | Distortion correction X-ray image sensor CMOS fiber optic taper RANSAC |
| url | https://ieeexplore.ieee.org/document/8935227/ |
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