Real-Time Adaptive Calibration for Dual-Energy X-ray Systems with Hardware and Environmental Drift Compensation
IEEE Sensors Journal, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Basım Tarihi: 2026
- Doi Numarası: 10.1109/jsen.2026.3745487
- Dergi Adı: IEEE Sensors Journal
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Aerospace Database, Compendex, INSPEC, Materials Science & Engineering Collection (ProQuest), Technology Collection (ProQuest)
- Anahtar Kelimeler: Adaptive calibration, detector calibration, drift compensation, dual-energy systems, real-time processing, X-ray imaging
- Hacettepe Üniversitesi Adresli: Evet
Özet
X-ray security systems rely on accurate detector calibration to ensure reliable imaging performance. However, calibration is highly sensitive to environmental and hardware-induced drifts, such as temperature variations and generator voltage fluctuations, which degrade detector response and lead to frequent system interruptions due to manual recalibration. This study presents a real-time Adaptive Calibration System (ACS) that eliminates the need for periodic recalibration by performing scan-level, detector-based correction. The proposed method dynamically estimates correction factors from valid air-reference regions within each scan and applies detector-channel-specific compensation directly to the raw detector signals without interrupting system operation. The system is evaluated under severe generator voltage drops and wide temperature variations using dual-energy X-ray data. The results demonstrate that ACS effectively restores signal consistency and preserves structural integrity across varying conditions. By enabling continuous and drift-resilient operation, the proposed approach improves measurement reliability and operational efficiency in real-world X-ray security systems.