Defining the costs
p
q
c
1
-1
w
-1
-1
1
1
c can be
computed using a cross-correlation filter
•assume
it is centered at p
A couple more modifications
•Scale
the filter response by length of link c.
Why?
•Make c
positive
–Set c =
(max-|filter response|*length)
–where
max = maximum |filter response|*length over all pixels in the image