f(x,y)
g(x’,y’)
x
y
Inverse warping
Get each pixel g(x’,y’) from its corresponding location
           (x,y) = h-1(x’,y’) in the first image
x
x’
h-1(x,y)
Q:  what if pixel comes from “between” two pixels?
y’
A:  resample color value
–We discussed resampling techniques before
•nearest neighbor, bilinear, Gaussian, bicubic