Fig. 1. Plane geometric model of infrared light field imaging. (a) Parameterization of infrared light; (b) geometric model of infrared camera

Fig. 2. Infrared light field imaging system

Fig. 3. Schematic of resampling

Fig. 4. Contrast of signal-to-noise ratio. (a) Single infrared image; (b) resampling image of 14×14 image array

Fig. 5. Infrared penetrating imaging. (a) Single infrared image; (b) resampling image of 8×8 image array

Fig. 6. (a) Visible light image; (b)-(d) digital refocusing images of different objects