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UCF REU Week 3

UCF REU Week 3. Lam Tran. Shape From Shading. Lambertian Model. E = k*p*COS q Let k=p=1, I = COS q = N*L/(|N||L|). Camera (0,0 , 1 ). (- p ,- q, 1 ). q. (- p s,- q s ,1 ). Lambertian Reflectance Map. p s =0 q s =0. Lambertian Reflectance Map. p s=0.7 q s=0.3.

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UCF REU Week 3

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  1. UCF REU Week 3 Lam Tran

  2. Shape From Shading

  3. Lambertian Model E = k*p*COS q Let k=p=1, I = COS q = N*L/(|N||L|) Camera (0,0,1) (-p,-q,1) q (-ps,-qs,1)

  4. Lambertian Reflectance Map ps=0 qs=0

  5. Lambertian Reflectance Map ps=0.7 qs=0.3

  6. Shape From Shading with MRF • Solve I(x,y) = R(p,q), p and q are the surface gradient Local horizontal and vertical cost Smoothness horizontal and vertical cost

  7. Optimization Techniques Less computation Guarantee Smoothness

  8. Optimization Example (1)

  9. Optimization Example (2) Approximation Exact

  10. Another Example

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