Hi Meche,

Many thanks for your effort and help.

I used your algorithm for my pyramid targets (4 faces). The algorithm has worked very well. However, when it applied to 3 faces after removing one plane an error occur in N matrix. As a result, I am still checking each step to see what the problem is with the 3 faces.
The algorithm is little bit hard to understand therefore I'm not an expert in this field,

Also, if I have trouble understanding your algorithm, would I be able to ask you a question?

Regards