  We introduce a set of statistical measures that can be used to quantify
non-equilibrium surface growth. They are used to deduce new information about
spatiotemporal dynamics of model systems for spinodal decomposition and surface
deposition. Patterns growth in the Cahn-Hilliard Equation (used to model
spinodal decomposition) are shown to exhibit three distinct stages. Two models
of surface growth, namely the continuous Kardar-Parisi-Zhang (KPZ) model and
the discrete Restricted-Solid-On-Solid (RSOS) model are shown to have different
saturation exponents.
