1.[ToDo (c)] What does vector s reflected about t mean?

Answer: See slide 10 for photostereo. Note that s is R and t is N. You need to calculate L as your output.

2. [ToDo (f)] What items do go into the M matrix and the v vector for computing the Depths?

Answer:

Let me give you an example.
You want to use the following two equations to get z(i+1,j) z(i,j) z(i,j+1)
given nx,ny and nz.

We'd like to get z by solving Mz=v

Here are the corresponding M, z and v for the above two equations.

z=[z(i+1,j)

    z(i,j)

    z(i,j+1)]

M=[nz -nz 0

      0   -nz nz]

v=[-nx

    -ny]