The constraints can be classified into two main categories, constraints on the surface parameter vectors and constraints on both data and parameters. A constraint belonging to the second category would be rather considered as an observation equation since it involves measurement. By a reasoning similar to that in Section ( 3.1 ) such kind of constraints can be put into the following form
where
,
and
are respectively a matrix, a vector and constant, all depending on the
data.
The constraints which involves only the vector parameters can be represented by the set of implicit equations
An example of how these equations are instantiated is given in Section 4.2 .
Naoufel Werghi
