Figure 5

Green component of noisy image # 14 (a), the map of σ² _{HVS-M lm} for noisy image (b), the map of σ² _{HVS-M lm} for filtered image (c), the ratio map in binary form, black if σ²_{HVS- M fi lm}/ σ²_{HVS- M or lm}< 1.5 and white otherwise (d).