한국해군과학기술학회
[ Article ]
Journal of the KNST - Vol. 6, No. 3, pp.303-307
ISSN: 2635-4926 (Print)
Print publication date 30 Sep 2023
Received 18 Jul 2023 Revised 30 Jul 2023 Accepted 24 Aug 2023
DOI: https://doi.org/10.31818/JKNST.2023.09.6.3.303

편광각도에 따른 CMOS 이미지 센서의 Sun Glint 영향성 분석

유연덕1, * ; 김홍락2 ; 박진호2 ; 박성현3 ; 강지안4
1LIG넥스원 PGM 탐색기연구소 연구원
2LIG넥스원 PGM 탐색기연구소 수석연구원
3LIG넥스원 PGM 탐색기연구소 선임연구원
4국방과학연구소 미사일연구원 선임연구원
Analysis of the Sun Glint Effect of CMOS Image Sensor by Polarization Angles
Yeondeok Yoo1, * ; Hong-Rak Kim2 ; Jin-Ho Park2 ; Sunghyun Park3 ; Jian Kang4
1Research engineer, PGM RF & IIR Seeker R&D Lab, LIG Nex1
2Chief research engineer, PGM RF & IIR Seeker R&D Lab, LIG Nex1
3Research engineer, PGM RF & IIR Seeker R&D Lab, LIG Nex1
4Research engineer, Missile R&D Lab, Agency for Defense Development

Correspondence to: *Yeondeok Yoo PGM RF & IIR Seeker R&D Lab, LIG Nex1 207, Mabuk-ro, Giheung-gu, Yongin-si, Gyeonggi-do, Republic of Korea Tel: +82-31-326-9491 E-mail: yeondeok.yoo@lignex1.com

© 2023 Korea Society for Naval Science & Technology

초록

This study analyzed the Sun Glint Effect of CMOS Image Sensor by Polarization Angles. First, when the polarization angle increased by 15° from 0° to 165°, each angles was compared by the number of sun glints. Standard Gray value was defined for the number of sun glint comparison. Then, the relationship between image average Gray value and Sun glint by polarization angles was analyzed. The polarization angle showed the smallest average number of sun glints in 500 frames at 60° - 75°. average number of sun glints in 500 frames decreased by 63.62 % for LPVIS100 and 79.03 % for #47-216 at 75° compared to 0°.

Abstract

본 논문에서는 편광각도에 따른 CMOS 이미지 센서의 sun glint 영향성을 분석하였다. 먼저, 편광 각도가 0°부터 165°까지 15°씩 증가할 때, sun glint 수를 비교하였다. Sun glint 수를 비교하기 위해 기준 gray 값을 정의하였다. 다음으로 편광각도에 따른 영상평균 gray 값과 sun glint의 관계를 분석하였다. 편광각도가 60° - 75°에서 500프레임 평균 sun glint 수가 가장 적게 나타난다. 0° 대비 75°의 500프레임 평균 sun glint 수는 편광필터 LPVIS100에서 약 63.62 %, 편광필터 #47-216에서 약 79.03 % 감소한다.

Keywords:

Image Sensor, Sun Glint, Sun Glitter, Polarization Angle, Polarization Filter

키워드:

영상센서, 태양 반사광, 태양 반사점, 편광각도, 편광필터

Acknowledgments

이 논문은 2023년 정부(방위사업청)의 재원으로 수행된 연구임

이 논문은 2023년도 한국해군과학기술학회 하계학술대회 발표 논문임.

References

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