Fig. 1. Schematic of micro-surface metamodel

Fig. 2. Shadowing and masking models of coating. (a) Passing shadowing model; (b) full shadowing model; (c) half-through semi- shadowing model; (d) passing masking model; (e) full masking model; (f) half-through semi-masking model

Fig. 3. Comparison of improved geometric attenuation model with Blinn model

Fig. 4. Comparison between numerical calculation result and experimental data for infrared DOLP of black paint

Fig. 5. Comparison between numerical calculation result and data of reference [13] for infrared DOLP of black paint

Fig. 6. DOLP of green paint versus angle of incidence under different roughnesses

Fig. 7. Infrared DOLPs of black paint and green paint under different influencing factors. (a) Black paint; (b) green paint

Fig. 8. DOLP of black paint versus angle of incidence under different γ. (a) γ<1; (b) γ>1