보정점 선정에 따른 2-Point NUC와 Multi-Point NUC의 성능 비교 분석

박정우¹^{, *} ; 박성현² ; 유연덕² ; 박진호³

1LIG D&A 미사일시스템탐색기연구소 연구원
2LIG D&A 미사일시스템탐색기연구소 선임연구원
3LIG D&A 미사일시스템탐색기연구소 수석연구원

Comparative Analysis of Two-Point and Multi-Point Non-Uniformity Correction Performance Based on Calibration Points Selection

Jeong-Woo Park¹^{, *} ; Sung-hyun Park² ; Yeondeok Yoo² ; Jin-Ho Park³

1Research engineer, Missile System IIR Seeker R&D Lab, LIG D&A
2Research engineer, Missile System IIR Seeker R&D Lab, LIG D&A
3Chief engineer, Missile System IIR Seeker R&D Lab, LIG D&A

Correspondence to: *Jeong-Woo Park 207, Mabuk-ro, Giheung-gu, Yongin-si, Gyeonggi-do, Republic of Korea Tel: +82-31-326-9117 E-mail: jeongwoo.park@ligdna.com

초록

본 논문에서는 IRFPA 픽셀의 응답 특성을 분석하고, 다양한 보정점 조합에 대한 선형 근사 오차를 비교하여 최적의 보정점을 선정하는 방법을 제안한다. 이를 위해 흑체 온도 변화에 따른 픽셀 응답 데이터를 기반으로 응답 곡선을 생성하고, 보정점 위치에 따른 보정 오차를 정량적으로 분석하였다. 또한 동일한 데이터에 대해 2-point NUC와 multi-point NUC를 적용하여 보정 성능을 비교하였다.

Abstract

In this study, we analyzed the response characteristics of individual pixels in an infrared focal plane array and developed a method for selecting the optimal calibration-points by comparing the linear‑approximation errors associated with various calibration‑point combinations. To this end, we first generated pixel response curves based on the measured responses to varying black‑body temperatures, and then quantitatively evaluate the calibration error as a function of the calibration‑point locations. We applied both two‑point non-uniformity correction (NUC) and multi‑point NUC to the same dataset and compared their respective correction performances.

Keywords:

Infrared Imaging, Non-Uniformity Correction, NUC, Calibration-Based NUC, CBNUC, Two-Point Correction, TPC, Multi-Point Correction, MPC, Nonlinear Response Characteristics

키워드:

적외선 영상, 불균일도 보정, 보정 기반 NUC, 2점 보정, 다점 보정, 비선형 응답 특성

Acknowledgments

이 논문은 2026년도 한국해군과학기술학회 하계학술대회 발표 논문임.

References

Li-feng Mian, Qian Xu, Ming-tao Zhang, De-xin Sun, & Yin-nian Liu, “Real-Time Implementation of Multi-Point Nonuniformity Correction for IRFPA Based on FPGA,” in proceedings of International Symposium on Photoelectronic Detection and Imaging 2009, VOL. 7383, 2009. [https://doi.org/10.1117/12.835055]