A Signal-Processing Framework for Inverse Rendering Ravi - - PowerPoint PPT Presentation
A Signal-Processing Framework for Inverse Rendering Ravi Ramamoorthi Pat Hanrahar Computer Graphics Laboratory , Stanford University Albert Liu Alessandro Farsi CS 6630 Realistic Image Synthesis Inverse Rendering Inverse Photographs
CS 6630 Realistic Image Synthesis Ravi Ramamoorthi Pat Hanrahar Computer Graphics Laboratory , Stanford University
Photographs Geometric model
Lighting BRDF
Precision measurement Data extraction
m=1 m=0 m=2 m=3 m=-3 m=-2 m=-1
Yl
m ,
2 l 1 4 l m l m Pl
m cos
eim
m
Yl
m
Looks like convolution (and convolution simple in Fourier’s space)
B , , L R , ' ', '
B L ' ',
l R ,
l m
l
m q,s p,r
m R ,
p
r
q,s p,r q,s p
l Lm l p,q l
l,m
l,m Cp,q l,m
Normalization Lightings BRDF Reflection (measured)