Re: [photo-3d] Re: Algorithm Wanted

["Dr. George A. Themelis" <drt-3d@xxxxxxx>]

Never a dull moment with Bruce! :)

Question:  Can you identify homologous points?
If you can identify the homologous points then the 
problem is simple. :)

You position one pair randomly "over the other", select 
a number of homologous points and compute the displacement 
vectors.  You sum up all the vectors together.

You then have the following problems:  

1. Shift one pair with respect to the other to minimize
the total displacement vector (two variables).

2. Rotate one pair with respect to the other to minimize
the total displacement vector (one variable).

The logic behind this procedure is that when the
members of the stereo pair are perfectly aligned then 
the total displacement vector has a minimum magnitude 
and points in the horizontal direction.

You can then set the stereo window by finding the point
with the smaller displacement vector.

If I understand this correctly, there are only three
variables involved so three points will suffice to solve 
the problem.

What do you say Bruce?

George Themelis