  One of the challenges in phase measuring deflectometry is to retrieve the
wavefront from objects that present discontinuities or non-differentiable
gradient fields. Here, we propose the integration of such gradients fields
based on an Lp-norm minimization problem. The solution of this problem results
in a nonlinear partial differential equation, which can be solved with a fast
and well-known numerical methods and doesn't depend on external parameters.
Numerical reconstructions on both synthetic and experimental data are presented
that demonstrate the capability of the proposed method.
