Model of bidirectional reflectance distribution function for metallic materials
Wang Kai1, Zhu Jing-Ping1, †, , Liu Hong1, 2, Hou Xun1
       

Relationship of normalized BRDF and reflected angle at different incident angles. (a) Incident angle 20°Al with different σ; (b) incident angle 20° Cu; (c) incident angle 40° Al with different σ; (d) incident angle 40° Cu; (e) incident angle 60° Al with different σ; and (f) incident angle 60° Cu.