Fig. 1. Schematic of detector image with radiation temperature of Thigh

Fig. 2. Histogram of output value of detector image with radiation temperature of Thigh

Fig. 3. Detector images before and after defective pixel correction with radiation temperature of Tt. (a) Before correction; (b) after correction

Fig. 4. Detector images before and after non-uniformity correction with radiation temperature of Tt. (a) Before correction; (b) after correction

Fig. 5. Correction results of detector images with different correction sequences. (a) Non-uniformity correction after defective pixel correction; (b) defective pixel correction after non-uniformity correction

Fig. 6. Scene images before and after correction. (a) Before correction; (b) after correction