IEICE TRANSACTIONS on Fundamentals
Pixel Variation Characteristics of a Global Shutter THz Imager and its Calibration Technique
Summary :
We have developed a Si-CMOS terahertz image sensor to address the paucity of low-cost terahertz detectors. Our imaging pixel directly connects to a VCO-based ADC and achieves pixel parallel ADC architecture for high-speed global shutter THz imaging. In this paper, we propose a digital calibration technique for offset and gain variation of each pixel using global shutter operation. The calibration technique gives reference signal to all pixels simultaneously and takes reference frames as a part of the high-speed image captures. Using this technique, we achieve offset/non-linear gain variation suppression of 85.7% compared to without correction.
- Publication
- IEICE TRANSACTIONS on Fundamentals Vol.E106-A No.5 pp.832-839
- Publication Date
- 2023/05/01
- Publicized
- 2022/11/25
- Online ISSN
- 1745-1337
- DOI
- 10.1587/transfun.2022GCP0004
- Type of Manuscript
- Special Section PAPER (Special Section on Analog Circuit Techniques and Related Topics)
- Category
Authors
Yuri KANAZAWA
Hokkaido University
Prasoon AMBALATHANKANDY
Hokkaido University
Masayuki IKEBE
Hokkaido University
Keyword
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Yuri KANAZAWA, Prasoon AMBALATHANKANDY, Masayuki IKEBE, "Pixel Variation Characteristics of a Global Shutter THz Imager and its Calibration Technique" in IEICE TRANSACTIONS on Fundamentals,
vol. E106-A, no. 5, pp. 832-839, May 2023, doi: 10.1587/transfun.2022GCP0004.
Abstract: We have developed a Si-CMOS terahertz image sensor to address the paucity of low-cost terahertz detectors. Our imaging pixel directly connects to a VCO-based ADC and achieves pixel parallel ADC architecture for high-speed global shutter THz imaging. In this paper, we propose a digital calibration technique for offset and gain variation of each pixel using global shutter operation. The calibration technique gives reference signal to all pixels simultaneously and takes reference frames as a part of the high-speed image captures. Using this technique, we achieve offset/non-linear gain variation suppression of 85.7% compared to without correction.
URL: https://global.ieice.org/en_transactions/fundamentals/10.1587/transfun.2022GCP0004/_p
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@ARTICLE{e106-a_5_832,
author={Yuri KANAZAWA, Prasoon AMBALATHANKANDY, Masayuki IKEBE, },
journal={IEICE TRANSACTIONS on Fundamentals},
title={Pixel Variation Characteristics of a Global Shutter THz Imager and its Calibration Technique},
year={2023},
volume={E106-A},
number={5},
pages={832-839},
abstract={We have developed a Si-CMOS terahertz image sensor to address the paucity of low-cost terahertz detectors. Our imaging pixel directly connects to a VCO-based ADC and achieves pixel parallel ADC architecture for high-speed global shutter THz imaging. In this paper, we propose a digital calibration technique for offset and gain variation of each pixel using global shutter operation. The calibration technique gives reference signal to all pixels simultaneously and takes reference frames as a part of the high-speed image captures. Using this technique, we achieve offset/non-linear gain variation suppression of 85.7% compared to without correction.},
keywords={},
doi={10.1587/transfun.2022GCP0004},
ISSN={1745-1337},
month={May},}
Copy
TY - JOUR
TI - Pixel Variation Characteristics of a Global Shutter THz Imager and its Calibration Technique
T2 - IEICE TRANSACTIONS on Fundamentals
SP - 832
EP - 839
AU - Yuri KANAZAWA
AU - Prasoon AMBALATHANKANDY
AU - Masayuki IKEBE
PY - 2023
DO - 10.1587/transfun.2022GCP0004
JO - IEICE TRANSACTIONS on Fundamentals
SN - 1745-1337
VL - E106-A
IS - 5
JA - IEICE TRANSACTIONS on Fundamentals
Y1 - May 2023
AB - We have developed a Si-CMOS terahertz image sensor to address the paucity of low-cost terahertz detectors. Our imaging pixel directly connects to a VCO-based ADC and achieves pixel parallel ADC architecture for high-speed global shutter THz imaging. In this paper, we propose a digital calibration technique for offset and gain variation of each pixel using global shutter operation. The calibration technique gives reference signal to all pixels simultaneously and takes reference frames as a part of the high-speed image captures. Using this technique, we achieve offset/non-linear gain variation suppression of 85.7% compared to without correction.
ER -
English
