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Chapter 5
Regularized Phase
Estimation Methods
in Interferometry
Moises Padilla and Manuel Servin
Centro de Investigaciones en Optica A. C.
Leon Guanajuato, Mexico.
5.1 INTRODUCTION
In digital image processing and digital interferometry, one nds two
broad classes of problems: direct problems and inverse problems. A
direct problem is one that, acting on an input signal I(x,y), produces an
output signal f(x,y) by means of a well-dened operation. In other words,
a direct problem transforms the input continuously and in a unique way.
at is,
f(x,y) = T[I(x,y)], (5.1)
where T[·] describes a general direct problem. As the name suggests,
inverse ...