Changchun Institute of Optics,Fine Mechanics and Physics,CAS
Compensation for the non-uniformity correction of multi-channel TDI CCD under variable gain | |
Y.-H. Li; X.-D. Wang and Z. Wang | |
2021 | |
发表期刊 | IET Optoelectronics |
ISSN | 17518768 |
卷号 | 15期号:1页码:27-39 |
摘要 | The compensation for non-uniformity correction of multi-channel time delay integration charge coupled device (TDI CCD) under variable gain is presented. The mathematical model of photoelectric conversion is established first, and, then, a two-step non-uniformity correction method for multi-channel TDI CCD is proposed. Based on this method, a compensation algorithm for non-uniformity correction under variable gain is elaborated in detail. The experimental results show that the proposed algorithm can always maintain the photo response non-uniformity (PRNU) of the corrected images better than 1.14% when the programmable gain amplification (PGA) gain varies within the range of 13, compared to the conventional method of degrading to 2.91%. Meanwhile, a compression method for correction coefficients under multiple integral stages is proposed, which can reduce the storage space requirement by 50% at the cost of the PRNU being degraded by a maximum of 0.19% at all integral stages. 2020 The Authors. IET Optoelectronics published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology. |
DOI | 10.1049/ote2.12011 |
URL | 查看原文 |
收录类别 | SCI ; EI |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://ir.ciomp.ac.cn/handle/181722/65107 |
专题 | 中国科学院长春光学精密机械与物理研究所 |
推荐引用方式 GB/T 7714 | Y.-H. Li,X.-D. Wang and Z. Wang. Compensation for the non-uniformity correction of multi-channel TDI CCD under variable gain[J]. IET Optoelectronics,2021,15(1):27-39. |
APA | Y.-H. Li,&X.-D. Wang and Z. Wang.(2021).Compensation for the non-uniformity correction of multi-channel TDI CCD under variable gain.IET Optoelectronics,15(1),27-39. |
MLA | Y.-H. Li,et al."Compensation for the non-uniformity correction of multi-channel TDI CCD under variable gain".IET Optoelectronics 15.1(2021):27-39. |
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