Reflectance Map Lambertian case iso-brightness contour 0.8 0.9 1.0 Rp,q=0.7 0,=90° (PPs +qqs+1=0) 0.3 0.0 Note:R(p,q)is maximum when (p,q)=(ps,as)
• Lambertian case 1.0 0.3 0.0 0.9 0.8 R(p,q) = 0.7 p q i = 90 ( + +1= 0) ppS qqS ( ) pS qS , iso-brightness contour Note: is maximum when R(p,q) ( ) ( ) p q pS qS , = , Reflectance Map
Reflectance Map Example Brightness as a function of surface orientation Lambertian iso-brightness surface contour 0.8 0.9 1.0 Rp,q=0.7 p 0=90° (pp+99、+1=0) 1+psp+qsq 3 Rp,q)=1+p+q1+n,2+qs2 0.0
Reflectance Map Example • Brightness as a function of surface orientation 1.0 0.3 0.0 0.9 0.8 R(p,q) = 0.7 p q i = 90 ( + +1= 0) ppS qqS ( ) pS qS , iso-brightness contour Lambertian surface